| CVE |
Vendors |
Products |
Updated |
CVSS v2 |
CVSS v3 |
In the Linux kernel, the following vulnerability has been resolved:
net: phy: clear phydev->devlink when the link is deleted
There is a potential crash issue when disabling and re-enabling the
network port. When disabling the network port, phy_detach() calls
device_link_del() to remove the device link, but it does not clear
phydev->devlink, so phydev->devlink is not a NULL pointer. Then the
network port is re-enabled, but if phy_attach_direct() fails before
calling device_link_add(), the code ...
In the Linux kernel, the following vulnerability has been resolved:
net: phy: clear phydev->devlink when the link is deleted
There is a potential crash issue when disabling and re-enabling the
network port. When disabling the network port, phy_detach() calls
device_link_del() to remove the device link, but it does not clear
phydev->devlink, so phydev->devlink is not a NULL pointer. Then the
network port is re-enabled, but if phy_attach_direct() fails before
calling device_link_add(), the code jumps to the "error" label and
calls phy_detach(). Since phydev->devlink retains the old value from
the previous attach/detach cycle, device_link_del() uses the old value,
which accesses a NULL pointer and causes a crash. The simplified crash
log is as follows.
[ 24.702421] Call trace:
[ 24.704856] device_link_put_kref+0x20/0x120
[ 24.709124] device_link_del+0x30/0x48
[ 24.712864] phy_detach+0x24/0x168
[ 24.716261] phy_attach_direct+0x168/0x3a4
[ 24.720352] phylink_fwnode_phy_connect+0xc8/0x14c
[ 24.725140] phylink_of_phy_connect+0x1c/0x34
Therefore, phydev->devlink needs to be cleared when the device link is
deleted.
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In the Linux kernel, the following vulnerability has been resolved:
f2fs: zone: fix to avoid inconsistence in between SIT and SSA
w/ below testcase, it will cause inconsistence in between SIT and SSA.
create_null_blk 512 2 1024 1024
mkfs.f2fs -m /dev/nullb0
mount /dev/nullb0 /mnt/f2fs/
touch /mnt/f2fs/file
f2fs_io pinfile set /mnt/f2fs/file
fallocate -l 4GiB /mnt/f2fs/file
F2FS-fs (nullb0): Inconsistent segment (0) type [1, 0] in SSA and SIT
CPU: 5 UID: 0 PID: 2398 Comm: fallocate Tainted: G ...
In the Linux kernel, the following vulnerability has been resolved:
f2fs: zone: fix to avoid inconsistence in between SIT and SSA
w/ below testcase, it will cause inconsistence in between SIT and SSA.
create_null_blk 512 2 1024 1024
mkfs.f2fs -m /dev/nullb0
mount /dev/nullb0 /mnt/f2fs/
touch /mnt/f2fs/file
f2fs_io pinfile set /mnt/f2fs/file
fallocate -l 4GiB /mnt/f2fs/file
F2FS-fs (nullb0): Inconsistent segment (0) type [1, 0] in SSA and SIT
CPU: 5 UID: 0 PID: 2398 Comm: fallocate Tainted: G O 6.13.0-rc1 #84
Tainted: [O]=OOT_MODULE
Hardware name: innotek GmbH VirtualBox/VirtualBox, BIOS VirtualBox 12/01/2006
Call Trace:
<TASK>
dump_stack_lvl+0xb3/0xd0
dump_stack+0x14/0x20
f2fs_handle_critical_error+0x18c/0x220 [f2fs]
f2fs_stop_checkpoint+0x38/0x50 [f2fs]
do_garbage_collect+0x674/0x6e0 [f2fs]
f2fs_gc_range+0x12b/0x230 [f2fs]
f2fs_allocate_pinning_section+0x5c/0x150 [f2fs]
f2fs_expand_inode_data+0x1cc/0x3c0 [f2fs]
f2fs_fallocate+0x3c3/0x410 [f2fs]
vfs_fallocate+0x15f/0x4b0
__x64_sys_fallocate+0x4a/0x80
x64_sys_call+0x15e8/0x1b80
do_syscall_64+0x68/0x130
entry_SYSCALL_64_after_hwframe+0x67/0x6f
RIP: 0033:0x7f9dba5197ca
F2FS-fs (nullb0): Stopped filesystem due to reason: 4
The reason is f2fs_gc_range() may try to migrate block in curseg, however,
its SSA block is not uptodate due to the last summary block data is still
in cache of curseg.
In this patch, we add a condition in f2fs_gc_range() to check whether
section is opened or not, and skip block migration for opened section.
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In the Linux kernel, the following vulnerability has been resolved:
perf: arm-ni: Unregister PMUs on probe failure
When a resource allocation fails in one clock domain of an NI device,
we need to properly roll back all previously registered perf PMUs in
other clock domains of the same device.
Otherwise, it can lead to kernel panics.
Calling arm_ni_init+0x0/0xff8 [arm_ni] @ 2374
arm-ni ARMHCB70:00: Failed to request PMU region 0x1f3c13000
arm-ni ARMHCB70:00: probe with driver arm-ni failed wi ...
In the Linux kernel, the following vulnerability has been resolved:
perf: arm-ni: Unregister PMUs on probe failure
When a resource allocation fails in one clock domain of an NI device,
we need to properly roll back all previously registered perf PMUs in
other clock domains of the same device.
Otherwise, it can lead to kernel panics.
Calling arm_ni_init+0x0/0xff8 [arm_ni] @ 2374
arm-ni ARMHCB70:00: Failed to request PMU region 0x1f3c13000
arm-ni ARMHCB70:00: probe with driver arm-ni failed with error -16
list_add corruption: next->prev should be prev (fffffd01e9698a18),
but was 0000000000000000. (next=ffff10001a0decc8).
pstate: 6340009 (nZCv daif +PAN -UAO +TCO +DIT -SSBS BTYPE=--)
pc : list_add_valid_or_report+0x7c/0xb8
lr : list_add_valid_or_report+0x7c/0xb8
Call trace:
__list_add_valid_or_report+0x7c/0xb8
perf_pmu_register+0x22c/0x3a0
arm_ni_probe+0x554/0x70c [arm_ni]
platform_probe+0x70/0xe8
really_probe+0xc6/0x4d8
driver_probe_device+0x48/0x170
__driver_attach+0x8e/0x1c0
bus_for_each_dev+0x64/0xf0
driver_add+0x138/0x260
bus_add_driver+0x68/0x138
__platform_driver_register+0x2c/0x40
arm_ni_init+0x14/0x2a [arm_ni]
do_init_module+0x36/0x298
---[ end trace 0000000000000000 ]---
Kernel panic - not syncing: Oops - BUG: Fatal exception
SMP: stopping secondary CPUs
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In the Linux kernel, the following vulnerability has been resolved:
arm64/fpsimd: Avoid clobbering kernel FPSIMD state with SMSTOP
On system with SME, a thread's kernel FPSIMD state may be erroneously
clobbered during a context switch immediately after that state is
restored. Systems without SME are unaffected.
If the CPU happens to be in streaming SVE mode before a context switch
to a thread with kernel FPSIMD state, fpsimd_thread_switch() will
restore the kernel FPSIMD state using fpsimd_lo ...
In the Linux kernel, the following vulnerability has been resolved:
arm64/fpsimd: Avoid clobbering kernel FPSIMD state with SMSTOP
On system with SME, a thread's kernel FPSIMD state may be erroneously
clobbered during a context switch immediately after that state is
restored. Systems without SME are unaffected.
If the CPU happens to be in streaming SVE mode before a context switch
to a thread with kernel FPSIMD state, fpsimd_thread_switch() will
restore the kernel FPSIMD state using fpsimd_load_kernel_state() while
the CPU is still in streaming SVE mode. When fpsimd_thread_switch()
subsequently calls fpsimd_flush_cpu_state(), this will execute an
SMSTOP, causing an exit from streaming SVE mode. The exit from
streaming SVE mode will cause the hardware to reset a number of
FPSIMD/SVE/SME registers, clobbering the FPSIMD state.
Fix this by calling fpsimd_flush_cpu_state() before restoring the kernel
FPSIMD state.
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In the Linux kernel, the following vulnerability has been resolved:
power: supply: max77705: Fix workqueue error handling in probe
The create_singlethread_workqueue() doesn't return error pointers, it
returns NULL. Also cleanup the workqueue on the error paths.
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In the Linux kernel, the following vulnerability has been resolved:
erofs: avoid using multiple devices with different type
For multiple devices, both primary and extra devices should be the
same type. `erofs_init_device` has already guaranteed that if the
primary is a file-backed device, extra devices should also be
regular files.
However, if the primary is a block device while the extra device
is a file-backed device, `erofs_init_device` will get an ENOTBLK,
which is not treated as an error ...
In the Linux kernel, the following vulnerability has been resolved:
erofs: avoid using multiple devices with different type
For multiple devices, both primary and extra devices should be the
same type. `erofs_init_device` has already guaranteed that if the
primary is a file-backed device, extra devices should also be
regular files.
However, if the primary is a block device while the extra device
is a file-backed device, `erofs_init_device` will get an ENOTBLK,
which is not treated as an error in `erofs_fc_get_tree`, and that
leads to an UAF:
erofs_fc_get_tree
get_tree_bdev_flags(erofs_fc_fill_super)
erofs_read_superblock
erofs_init_device // sbi->dif0 is not inited yet,
// return -ENOTBLK
deactivate_locked_super
free(sbi)
if (err is -ENOTBLK)
sbi->dif0.file = filp_open() // sbi UAF
So if -ENOTBLK is hitted in `erofs_init_device`, it means the
primary device must be a block device, and the extra device
is not a block device. The error can be converted to -EINVAL.
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ImageMagick is a free and open-source software suite, used for editing and manipulating digital images. The `AppImage` version `ImageMagick` might use an empty path when setting `MAGICK_CONFIGURE_PATH` and `LD_LIBRARY_PATH` environment variables while executing, which might lead to arbitrary code execution by loading malicious configuration files or shared libraries in the current working directory while executing `ImageMagick`. The vulnerability is fixed in 7.11-36.
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In the Linux kernel, the following vulnerability has been resolved:
fpga: fix potential null pointer deref in fpga_mgr_test_img_load_sgt()
fpga_mgr_test_img_load_sgt() allocates memory for sgt using
kunit_kzalloc() however it does not check if the allocation failed.
It then passes sgt to sg_alloc_table(), which passes it to
__sg_alloc_table(). This function calls memset() on sgt in an attempt to
zero it out. If the allocation fails then sgt will be NULL and the
memset will trigger a NULL point ...
In the Linux kernel, the following vulnerability has been resolved:
fpga: fix potential null pointer deref in fpga_mgr_test_img_load_sgt()
fpga_mgr_test_img_load_sgt() allocates memory for sgt using
kunit_kzalloc() however it does not check if the allocation failed.
It then passes sgt to sg_alloc_table(), which passes it to
__sg_alloc_table(). This function calls memset() on sgt in an attempt to
zero it out. If the allocation fails then sgt will be NULL and the
memset will trigger a NULL pointer dereference.
Fix this by checking the allocation with KUNIT_ASSERT_NOT_ERR_OR_NULL().
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In the Linux kernel, the following vulnerability has been resolved:
net: dsa: b53: do not enable EEE on bcm63xx
BCM63xx internal switches do not support EEE, but provide multiple RGMII
ports where external PHYs may be connected. If one of these PHYs are EEE
capable, we may try to enable EEE for the MACs, which then hangs the
system on access of the (non-existent) EEE registers.
Fix this by checking if the switch actually supports EEE before
attempting to configure it.
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In the Linux kernel, the following vulnerability has been resolved:
net: prevent a NULL deref in rtnl_create_link()
At the time rtnl_create_link() is running, dev->netdev_ops is NULL,
we must not use netdev_lock_ops() or risk a NULL deref if
CONFIG_NET_SHAPER is defined.
Use netif_set_group() instead of dev_set_group().
RIP: 0010:netdev_need_ops_lock include/net/netdev_lock.h:33 [inline]
RIP: 0010:netdev_lock_ops include/net/netdev_lock.h:41 [inline]
RIP: 0010:dev_set_group+0xc0/0x230 net ...
In the Linux kernel, the following vulnerability has been resolved:
net: prevent a NULL deref in rtnl_create_link()
At the time rtnl_create_link() is running, dev->netdev_ops is NULL,
we must not use netdev_lock_ops() or risk a NULL deref if
CONFIG_NET_SHAPER is defined.
Use netif_set_group() instead of dev_set_group().
RIP: 0010:netdev_need_ops_lock include/net/netdev_lock.h:33 [inline]
RIP: 0010:netdev_lock_ops include/net/netdev_lock.h:41 [inline]
RIP: 0010:dev_set_group+0xc0/0x230 net/core/dev_api.c:82
Call Trace:
<TASK>
rtnl_create_link+0x748/0xd10 net/core/rtnetlink.c:3674
rtnl_newlink_create+0x25c/0xb00 net/core/rtnetlink.c:3813
__rtnl_newlink net/core/rtnetlink.c:3940 [inline]
rtnl_newlink+0x16d6/0x1c70 net/core/rtnetlink.c:4055
rtnetlink_rcv_msg+0x7cf/0xb70 net/core/rtnetlink.c:6944
netlink_rcv_skb+0x208/0x470 net/netlink/af_netlink.c:2534
netlink_unicast_kernel net/netlink/af_netlink.c:1313 [inline]
netlink_unicast+0x75b/0x8d0 net/netlink/af_netlink.c:1339
netlink_sendmsg+0x805/0xb30 net/netlink/af_netlink.c:1883
sock_sendmsg_nosec net/socket.c:712 [inline]
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In the Linux kernel, the following vulnerability has been resolved:
net: drv: netdevsim: don't napi_complete() from netpoll
netdevsim supports netpoll. Make sure we don't call napi_complete()
from it, since it may not be scheduled. Breno reports hitting a
warning in napi_complete_done():
WARNING: CPU: 14 PID: 104 at net/core/dev.c:6592 napi_complete_done+0x2cc/0x560
__napi_poll+0x2d8/0x3a0
handle_softirqs+0x1fe/0x710
This is presumably after netpoll stole the SCHED bit prematurely.
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In the Linux kernel, the following vulnerability has been resolved:
btrfs: exit after state insertion failure at btrfs_convert_extent_bit()
If insert_state() state failed it returns an error pointer and we call
extent_io_tree_panic() which will trigger a BUG() call. However if
CONFIG_BUG is disabled, which is an uncommon and exotic scenario, then
we fallthrough and call cache_state() which will dereference the error
pointer, resulting in an invalid memory access.
So jump to the 'out' label af ...
In the Linux kernel, the following vulnerability has been resolved:
btrfs: exit after state insertion failure at btrfs_convert_extent_bit()
If insert_state() state failed it returns an error pointer and we call
extent_io_tree_panic() which will trigger a BUG() call. However if
CONFIG_BUG is disabled, which is an uncommon and exotic scenario, then
we fallthrough and call cache_state() which will dereference the error
pointer, resulting in an invalid memory access.
So jump to the 'out' label after calling extent_io_tree_panic(), it also
makes the code more clear besides dealing with the exotic scenario where
CONFIG_BUG is disabled.
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In the Linux kernel, the following vulnerability has been resolved:
usb: typec: tcpm: move tcpm_queue_vdm_unlocked to asynchronous work
A state check was previously added to tcpm_queue_vdm_unlocked to
prevent a deadlock where the DisplayPort Alt Mode driver would be
executing work and attempting to grab the tcpm_lock while the TCPM
was holding the lock and attempting to unregister the altmode, blocking
on the altmode driver's cancel_work_sync call.
Because the state check isn't protected, the ...
In the Linux kernel, the following vulnerability has been resolved:
usb: typec: tcpm: move tcpm_queue_vdm_unlocked to asynchronous work
A state check was previously added to tcpm_queue_vdm_unlocked to
prevent a deadlock where the DisplayPort Alt Mode driver would be
executing work and attempting to grab the tcpm_lock while the TCPM
was holding the lock and attempting to unregister the altmode, blocking
on the altmode driver's cancel_work_sync call.
Because the state check isn't protected, there is a small window
where the Alt Mode driver could determine that the TCPM is
in a ready state and attempt to grab the lock while the
TCPM grabs the lock and changes the TCPM state to one that
causes the deadlock. The callstack is provided below:
[110121.667392][ C7] Call trace:
[110121.667396][ C7] __switch_to+0x174/0x338
[110121.667406][ C7] __schedule+0x608/0x9f0
[110121.667414][ C7] schedule+0x7c/0xe8
[110121.667423][ C7] kernfs_drain+0xb0/0x114
[110121.667431][ C7] __kernfs_remove+0x16c/0x20c
[110121.667436][ C7] kernfs_remove_by_name_ns+0x74/0xe8
[110121.667442][ C7] sysfs_remove_group+0x84/0xe8
[110121.667450][ C7] sysfs_remove_groups+0x34/0x58
[110121.667458][ C7] device_remove_groups+0x10/0x20
[110121.667464][ C7] device_release_driver_internal+0x164/0x2e4
[110121.667475][ C7] device_release_driver+0x18/0x28
[110121.667484][ C7] bus_remove_device+0xec/0x118
[110121.667491][ C7] device_del+0x1e8/0x4ac
[110121.667498][ C7] device_unregister+0x18/0x38
[110121.667504][ C7] typec_unregister_altmode+0x30/0x44
[110121.667515][ C7] tcpm_reset_port+0xac/0x370
[110121.667523][ C7] tcpm_snk_detach+0x84/0xb8
[110121.667529][ C7] run_state_machine+0x4c0/0x1b68
[110121.667536][ C7] tcpm_state_machine_work+0x94/0xe4
[110121.667544][ C7] kthread_worker_fn+0x10c/0x244
[110121.667552][ C7] kthread+0x104/0x1d4
[110121.667557][ C7] ret_from_fork+0x10/0x20
[110121.667689][ C7] Workqueue: events dp_altmode_work
[110121.667697][ C7] Call trace:
[110121.667701][ C7] __switch_to+0x174/0x338
[110121.667710][ C7] __schedule+0x608/0x9f0
[110121.667717][ C7] schedule+0x7c/0xe8
[110121.667725][ C7] schedule_preempt_disabled+0x24/0x40
[110121.667733][ C7] __mutex_lock+0x408/0xdac
[110121.667741][ C7] __mutex_lock_slowpath+0x14/0x24
[110121.667748][ C7] mutex_lock+0x40/0xec
[110121.667757][ C7] tcpm_altmode_enter+0x78/0xb4
[110121.667764][ C7] typec_altmode_enter+0xdc/0x10c
[110121.667769][ C7] dp_altmode_work+0x68/0x164
[110121.667775][ C7] process_one_work+0x1e4/0x43c
[110121.667783][ C7] worker_thread+0x25c/0x430
[110121.667789][ C7] kthread+0x104/0x1d4
[110121.667794][ C7] ret_from_fork+0x10/0x20
Change tcpm_queue_vdm_unlocked to queue for tcpm_queue_vdm_work,
which can perform the state check while holding the TCPM lock
while the Alt Mode lock is no longer held. This requires a new
struct to hold the vdm data, altmode_vdm_event.
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In the Linux kernel, the following vulnerability has been resolved:
fs/dax: Fix "don't skip locked entries when scanning entries"
Commit 6be3e21d25ca ("fs/dax: don't skip locked entries when scanning
entries") introduced a new function, wait_entry_unlocked_exclusive(),
which waits for the current entry to become unlocked without advancing
the XArray iterator state.
Waiting for the entry to become unlocked requires dropping the XArray
lock. This requires calling xas_pause() prior to dropping t ...
In the Linux kernel, the following vulnerability has been resolved:
fs/dax: Fix "don't skip locked entries when scanning entries"
Commit 6be3e21d25ca ("fs/dax: don't skip locked entries when scanning
entries") introduced a new function, wait_entry_unlocked_exclusive(),
which waits for the current entry to become unlocked without advancing
the XArray iterator state.
Waiting for the entry to become unlocked requires dropping the XArray
lock. This requires calling xas_pause() prior to dropping the lock
which leaves the xas in a suitable state for the next iteration. However
this has the side-effect of advancing the xas state to the next index.
Normally this isn't an issue because xas_for_each() contains code to
detect this state and thus avoid advancing the index a second time on
the next loop iteration.
However both callers of and wait_entry_unlocked_exclusive() itself
subsequently use the xas state to reload the entry. As xas_pause()
updated the state to the next index this will cause the current entry
which is being waited on to be skipped. This caused the following
warning to fire intermittently when running xftest generic/068 on an XFS
filesystem with FS DAX enabled:
[ 35.067397] ------------[ cut here ]------------
[ 35.068229] WARNING: CPU: 21 PID: 1640 at mm/truncate.c:89 truncate_folio_batch_exceptionals+0xd8/0x1e0
[ 35.069717] Modules linked in: nd_pmem dax_pmem nd_btt nd_e820 libnvdimm
[ 35.071006] CPU: 21 UID: 0 PID: 1640 Comm: fstest Not tainted 6.15.0-rc7+ #77 PREEMPT(voluntary)
[ 35.072613] Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS rel-1.16.3-0-ga6ed6b701f0a-prebuilt.qemu.org 04/01/204
[ 35.074845] RIP: 0010:truncate_folio_batch_exceptionals+0xd8/0x1e0
[ 35.075962] Code: a1 00 00 00 f6 47 0d 20 0f 84 97 00 00 00 4c 63 e8 41 39 c4 7f 0b eb 61 49 83 c5 01 45 39 ec 7e 58 42 f68
[ 35.079522] RSP: 0018:ffffb04e426c7850 EFLAGS: 00010202
[ 35.080359] RAX: 0000000000000000 RBX: ffff9d21e3481908 RCX: ffffb04e426c77f4
[ 35.081477] RDX: ffffb04e426c79e8 RSI: ffffb04e426c79e0 RDI: ffff9d21e34816e8
[ 35.082590] RBP: ffffb04e426c79e0 R08: 0000000000000001 R09: 0000000000000003
[ 35.083733] R10: 0000000000000000 R11: 822b53c0f7a49868 R12: 000000000000001f
[ 35.084850] R13: 0000000000000000 R14: ffffb04e426c78e8 R15: fffffffffffffffe
[ 35.085953] FS: 00007f9134c87740(0000) GS:ffff9d22abba0000(0000) knlGS:0000000000000000
[ 35.087346] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 35.088244] CR2: 00007f9134c86000 CR3: 000000040afff000 CR4: 00000000000006f0
[ 35.089354] Call Trace:
[ 35.089749] <TASK>
[ 35.090168] truncate_inode_pages_range+0xfc/0x4d0
[ 35.091078] truncate_pagecache+0x47/0x60
[ 35.091735] xfs_setattr_size+0xc7/0x3e0
[ 35.092648] xfs_vn_setattr+0x1ea/0x270
[ 35.093437] notify_change+0x1f4/0x510
[ 35.094219] ? do_truncate+0x97/0xe0
[ 35.094879] do_truncate+0x97/0xe0
[ 35.095640] path_openat+0xabd/0xca0
[ 35.096278] do_filp_open+0xd7/0x190
[ 35.096860] do_sys_openat2+0x8a/0xe0
[ 35.097459] __x64_sys_openat+0x6d/0xa0
[ 35.098076] do_syscall_64+0xbb/0x1d0
[ 35.098647] entry_SYSCALL_64_after_hwframe+0x77/0x7f
[ 35.099444] RIP: 0033:0x7f9134d81fc1
[ 35.100033] Code: 75 57 89 f0 25 00 00 41 00 3d 00 00 41 00 74 49 80 3d 2a 26 0e 00 00 74 6d 89 da 48 89 ee bf 9c ff ff ff5
[ 35.102993] RSP: 002b:00007ffcd41e0d10 EFLAGS: 00000202 ORIG_RAX: 0000000000000101
[ 35.104263] RAX: ffffffffffffffda RBX: 0000000000000242 RCX: 00007f9134d81fc1
[ 35.105452] RDX: 0000000000000242 RSI: 00007ffcd41e1200 RDI: 00000000ffffff9c
[ 35.106663] RBP: 00007ffcd41e1200 R08: 0000000000000000 R09: 0000000000000064
[ 35.107923] R10: 00000000000001a4 R11: 0000000000000202 R12: 0000000000000066
[ 35.109112] R13: 0000000000100000 R14: 0000000000100000 R15: 0000000000000400
[ 35.110357] </TASK>
[ 35.110769] irq event stamp: 8415587
[ 35.111486] hardirqs last enabled at (8415599): [<ffffffff8d74b562>] __up_console_se
---truncated---
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In the Linux kernel, the following vulnerability has been resolved:
octeontx2-pf: QOS: Refactor TC_HTB_LEAF_DEL_LAST callback
This patch addresses below issues,
1. Active traffic on the leaf node must be stopped before its send queue
is reassigned to the parent. This patch resolves the issue by marking
the node as 'Inner'.
2. During a system reboot, the interface receives TC_HTB_LEAF_DEL
and TC_HTB_LEAF_DEL_LAST callbacks to delete its HTB queues.
In the case of TC_HTB_LEAF_DEL_L ...
In the Linux kernel, the following vulnerability has been resolved:
octeontx2-pf: QOS: Refactor TC_HTB_LEAF_DEL_LAST callback
This patch addresses below issues,
1. Active traffic on the leaf node must be stopped before its send queue
is reassigned to the parent. This patch resolves the issue by marking
the node as 'Inner'.
2. During a system reboot, the interface receives TC_HTB_LEAF_DEL
and TC_HTB_LEAF_DEL_LAST callbacks to delete its HTB queues.
In the case of TC_HTB_LEAF_DEL_LAST, although the same send queue
is reassigned to the parent, the current logic still attempts to update
the real number of queues, leadning to below warnings
New queues can't be registered after device unregistration.
WARNING: CPU: 0 PID: 6475 at net/core/net-sysfs.c:1714
netdev_queue_update_kobjects+0x1e4/0x200
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In the Linux kernel, the following vulnerability has been resolved:
wifi: mt76: mt7996: Add NULL check in mt7996_thermal_init
devm_kasprintf() can return a NULL pointer on failure,but this
returned value in mt7996_thermal_init() is not checked.
Add NULL check in mt7996_thermal_init(), to handle kernel NULL
pointer dereference error.
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In the Linux kernel, the following vulnerability has been resolved:
hisi_acc_vfio_pci: bugfix live migration function without VF device driver
If the VF device driver is not loaded in the Guest OS and we attempt to
perform device data migration, the address of the migrated data will
be NULL.
The live migration recovery operation on the destination side will
access a null address value, which will cause access errors.
Therefore, live migration of VMs without added VF device drivers
does not re ...
In the Linux kernel, the following vulnerability has been resolved:
hisi_acc_vfio_pci: bugfix live migration function without VF device driver
If the VF device driver is not loaded in the Guest OS and we attempt to
perform device data migration, the address of the migrated data will
be NULL.
The live migration recovery operation on the destination side will
access a null address value, which will cause access errors.
Therefore, live migration of VMs without added VF device drivers
does not require device data migration.
In addition, when the queue address data obtained by the destination
is empty, device queue recovery processing will not be performed.
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In the Linux kernel, the following vulnerability has been resolved:
binder: fix yet another UAF in binder_devices
Commit e77aff5528a18 ("binderfs: fix use-after-free in binder_devices")
addressed a use-after-free where devices could be released without first
being removed from the binder_devices list. However, there is a similar
path in binder_free_proc() that was missed:
==================================================================
BUG: KASAN: slab-use-after-free in binder_remove_de ...
In the Linux kernel, the following vulnerability has been resolved:
binder: fix yet another UAF in binder_devices
Commit e77aff5528a18 ("binderfs: fix use-after-free in binder_devices")
addressed a use-after-free where devices could be released without first
being removed from the binder_devices list. However, there is a similar
path in binder_free_proc() that was missed:
==================================================================
BUG: KASAN: slab-use-after-free in binder_remove_device+0xd4/0x100
Write of size 8 at addr ffff0000c773b900 by task umount/467
CPU: 12 UID: 0 PID: 467 Comm: umount Not tainted 6.15.0-rc7-00138-g57483a362741 #9 PREEMPT
Hardware name: linux,dummy-virt (DT)
Call trace:
binder_remove_device+0xd4/0x100
binderfs_evict_inode+0x230/0x2f0
evict+0x25c/0x5dc
iput+0x304/0x480
dentry_unlink_inode+0x208/0x46c
__dentry_kill+0x154/0x530
[...]
Allocated by task 463:
__kmalloc_cache_noprof+0x13c/0x324
binderfs_binder_device_create.isra.0+0x138/0xa60
binder_ctl_ioctl+0x1ac/0x230
[...]
Freed by task 215:
kfree+0x184/0x31c
binder_proc_dec_tmpref+0x33c/0x4ac
binder_deferred_func+0xc10/0x1108
process_one_work+0x520/0xba4
[...]
==================================================================
Call binder_remove_device() within binder_free_proc() to ensure the
device is removed from the binder_devices list before being kfreed.
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In the Linux kernel, the following vulnerability has been resolved:
binder: fix use-after-free in binderfs_evict_inode()
Running 'stress-ng --binderfs 16 --timeout 300' under KASAN-enabled
kernel, I've noticed the following:
BUG: KASAN: slab-use-after-free in binderfs_evict_inode+0x1de/0x2d0
Write of size 8 at addr ffff88807379bc08 by task stress-ng-binde/1699
CPU: 0 UID: 0 PID: 1699 Comm: stress-ng-binde Not tainted 6.14.0-rc7-g586de92313fc-dirty #13
Hardware name: QEMU Standard PC (i440FX ...
In the Linux kernel, the following vulnerability has been resolved:
binder: fix use-after-free in binderfs_evict_inode()
Running 'stress-ng --binderfs 16 --timeout 300' under KASAN-enabled
kernel, I've noticed the following:
BUG: KASAN: slab-use-after-free in binderfs_evict_inode+0x1de/0x2d0
Write of size 8 at addr ffff88807379bc08 by task stress-ng-binde/1699
CPU: 0 UID: 0 PID: 1699 Comm: stress-ng-binde Not tainted 6.14.0-rc7-g586de92313fc-dirty #13
Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.16.3-3.fc41 04/01/2014
Call Trace:
<TASK>
dump_stack_lvl+0x1c2/0x2a0
? __pfx_dump_stack_lvl+0x10/0x10
? __pfx__printk+0x10/0x10
? __pfx_lock_release+0x10/0x10
? __virt_addr_valid+0x18c/0x540
? __virt_addr_valid+0x469/0x540
print_report+0x155/0x840
? __virt_addr_valid+0x18c/0x540
? __virt_addr_valid+0x469/0x540
? __phys_addr+0xba/0x170
? binderfs_evict_inode+0x1de/0x2d0
kasan_report+0x147/0x180
? binderfs_evict_inode+0x1de/0x2d0
binderfs_evict_inode+0x1de/0x2d0
? __pfx_binderfs_evict_inode+0x10/0x10
evict+0x524/0x9f0
? __pfx_lock_release+0x10/0x10
? __pfx_evict+0x10/0x10
? do_raw_spin_unlock+0x4d/0x210
? _raw_spin_unlock+0x28/0x50
? iput+0x697/0x9b0
__dentry_kill+0x209/0x660
? shrink_kill+0x8d/0x2c0
shrink_kill+0xa9/0x2c0
shrink_dentry_list+0x2e0/0x5e0
shrink_dcache_parent+0xa2/0x2c0
? __pfx_shrink_dcache_parent+0x10/0x10
? __pfx_lock_release+0x10/0x10
? __pfx_do_raw_spin_lock+0x10/0x10
do_one_tree+0x23/0xe0
shrink_dcache_for_umount+0xa0/0x170
generic_shutdown_super+0x67/0x390
kill_litter_super+0x76/0xb0
binderfs_kill_super+0x44/0x90
deactivate_locked_super+0xb9/0x130
cleanup_mnt+0x422/0x4c0
? lockdep_hardirqs_on+0x9d/0x150
task_work_run+0x1d2/0x260
? __pfx_task_work_run+0x10/0x10
resume_user_mode_work+0x52/0x60
syscall_exit_to_user_mode+0x9a/0x120
do_syscall_64+0x103/0x210
? asm_sysvec_apic_timer_interrupt+0x1a/0x20
entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0xcac57b
Code: c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 40 00 f3 0f 1e fa 31 f6 e9 05 00 00 00 0f 1f 44 00 00 f3 0f 1e fa b8
RSP: 002b:00007ffecf4226a8 EFLAGS: 00000246 ORIG_RAX: 00000000000000a6
RAX: 0000000000000000 RBX: 00007ffecf422720 RCX: 0000000000cac57b
RDX: 0000000000000000 RSI: 0000000000000000 RDI: 00007ffecf422850
RBP: 00007ffecf422850 R08: 0000000028d06ab1 R09: 7fffffffffffffff
R10: 3fffffffffffffff R11: 0000000000000246 R12: 00007ffecf422718
R13: 00007ffecf422710 R14: 00007f478f87b658 R15: 00007ffecf422830
</TASK>
Allocated by task 1705:
kasan_save_track+0x3e/0x80
__kasan_kmalloc+0x8f/0xa0
__kmalloc_cache_noprof+0x213/0x3e0
binderfs_binder_device_create+0x183/0xa80
binder_ctl_ioctl+0x138/0x190
__x64_sys_ioctl+0x120/0x1b0
do_syscall_64+0xf6/0x210
entry_SYSCALL_64_after_hwframe+0x77/0x7f
Freed by task 1705:
kasan_save_track+0x3e/0x80
kasan_save_free_info+0x46/0x50
__kasan_slab_free+0x62/0x70
kfree+0x194/0x440
evict+0x524/0x9f0
do_unlinkat+0x390/0x5b0
__x64_sys_unlink+0x47/0x50
do_syscall_64+0xf6/0x210
entry_SYSCALL_64_after_hwframe+0x77/0x7f
This 'stress-ng' workload causes the concurrent deletions from
'binder_devices' and so requires full-featured synchronization
to prevent list corruption.
I've found this issue independently but pretty sure that syzbot did
the same, so Reported-by: and Closes: should be applicable here as well.
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In the Linux kernel, the following vulnerability has been resolved:
userns and mnt_idmap leak in open_tree_attr(2)
Once want_mount_setattr() has returned a positive, it does require
finish_mount_kattr() to release ->mnt_userns. Failing do_mount_setattr()
does not change that.
As the result, we can end up leaking userns and possibly mnt_idmap as
well.
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In the Linux kernel, the following vulnerability has been resolved:
smb: client: fix max_sge overflow in smb_extract_folioq_to_rdma()
This fixes the following problem:
[ 749.901015] [ T8673] run fstests cifs/001 at 2025-06-17 09:40:30
[ 750.346409] [ T9870] ==================================================================
[ 750.346814] [ T9870] BUG: KASAN: slab-out-of-bounds in smb_set_sge+0x2cc/0x3b0 [cifs]
[ 750.347330] [ T9870] Write of size 8 at addr ffff888011082890 by task ...
In the Linux kernel, the following vulnerability has been resolved:
smb: client: fix max_sge overflow in smb_extract_folioq_to_rdma()
This fixes the following problem:
[ 749.901015] [ T8673] run fstests cifs/001 at 2025-06-17 09:40:30
[ 750.346409] [ T9870] ==================================================================
[ 750.346814] [ T9870] BUG: KASAN: slab-out-of-bounds in smb_set_sge+0x2cc/0x3b0 [cifs]
[ 750.347330] [ T9870] Write of size 8 at addr ffff888011082890 by task xfs_io/9870
[ 750.347705] [ T9870]
[ 750.348077] [ T9870] CPU: 0 UID: 0 PID: 9870 Comm: xfs_io Kdump: loaded Not tainted 6.16.0-rc2-metze.02+ #1 PREEMPT(voluntary)
[ 750.348082] [ T9870] Hardware name: innotek GmbH VirtualBox/VirtualBox, BIOS VirtualBox 12/01/2006
[ 750.348085] [ T9870] Call Trace:
[ 750.348086] [ T9870] <TASK>
[ 750.348088] [ T9870] dump_stack_lvl+0x76/0xa0
[ 750.348106] [ T9870] print_report+0xd1/0x640
[ 750.348116] [ T9870] ? __pfx__raw_spin_lock_irqsave+0x10/0x10
[ 750.348120] [ T9870] ? kasan_complete_mode_report_info+0x26/0x210
[ 750.348124] [ T9870] kasan_report+0xe7/0x130
[ 750.348128] [ T9870] ? smb_set_sge+0x2cc/0x3b0 [cifs]
[ 750.348262] [ T9870] ? smb_set_sge+0x2cc/0x3b0 [cifs]
[ 750.348377] [ T9870] __asan_report_store8_noabort+0x17/0x30
[ 750.348381] [ T9870] smb_set_sge+0x2cc/0x3b0 [cifs]
[ 750.348496] [ T9870] smbd_post_send_iter+0x1990/0x3070 [cifs]
[ 750.348625] [ T9870] ? __pfx_smbd_post_send_iter+0x10/0x10 [cifs]
[ 750.348741] [ T9870] ? update_stack_state+0x2a0/0x670
[ 750.348749] [ T9870] ? cifs_flush+0x153/0x320 [cifs]
[ 750.348870] [ T9870] ? cifs_flush+0x153/0x320 [cifs]
[ 750.348990] [ T9870] ? update_stack_state+0x2a0/0x670
[ 750.348995] [ T9870] smbd_send+0x58c/0x9c0 [cifs]
[ 750.349117] [ T9870] ? __pfx_smbd_send+0x10/0x10 [cifs]
[ 750.349231] [ T9870] ? unwind_get_return_address+0x65/0xb0
[ 750.349235] [ T9870] ? __pfx_stack_trace_consume_entry+0x10/0x10
[ 750.349242] [ T9870] ? arch_stack_walk+0xa7/0x100
[ 750.349250] [ T9870] ? stack_trace_save+0x92/0xd0
[ 750.349254] [ T9870] __smb_send_rqst+0x931/0xec0 [cifs]
[ 750.349374] [ T9870] ? kernel_text_address+0x173/0x190
[ 750.349379] [ T9870] ? kasan_save_stack+0x39/0x70
[ 750.349382] [ T9870] ? kasan_save_track+0x18/0x70
[ 750.349385] [ T9870] ? __kasan_slab_alloc+0x9d/0xa0
[ 750.349389] [ T9870] ? __pfx___smb_send_rqst+0x10/0x10 [cifs]
[ 750.349508] [ T9870] ? smb2_mid_entry_alloc+0xb4/0x7e0 [cifs]
[ 750.349626] [ T9870] ? cifs_call_async+0x277/0xb00 [cifs]
[ 750.349746] [ T9870] ? cifs_issue_write+0x256/0x610 [cifs]
[ 750.349867] [ T9870] ? netfs_do_issue_write+0xc2/0x340 [netfs]
[ 750.349900] [ T9870] ? netfs_advance_write+0x45b/0x1270 [netfs]
[ 750.349929] [ T9870] ? netfs_write_folio+0xd6c/0x1be0 [netfs]
[ 750.349958] [ T9870] ? netfs_writepages+0x2e9/0xa80 [netfs]
[ 750.349987] [ T9870] ? do_writepages+0x21f/0x590
[ 750.349993] [ T9870] ? filemap_fdatawrite_wbc+0xe1/0x140
[ 750.349997] [ T9870] ? entry_SYSCALL_64_after_hwframe+0x76/0x7e
[ 750.350002] [ T9870] smb_send_rqst+0x22e/0x2f0 [cifs]
[ 750.350131] [ T9870] ? __pfx_smb_send_rqst+0x10/0x10 [cifs]
[ 750.350255] [ T9870] ? local_clock_noinstr+0xe/0xd0
[ 750.350261] [ T9870] ? kasan_save_alloc_info+0x37/0x60
[ 750.350268] [ T9870] ? __kasan_check_write+0x14/0x30
[ 750.350271] [ T9870] ? _raw_spin_lock+0x81/0xf0
[ 750.350275] [ T9870] ? __pfx__raw_spin_lock+0x10/0x10
[ 750.350278] [ T9870] ? smb2_setup_async_request+0x293/0x580 [cifs]
[ 750.350398] [ T9870] cifs_call_async+0x477/0xb00 [cifs]
[ 750.350518] [ T9870] ? __pfx_smb2_writev_callback+0x10/0x10 [cifs]
[ 750.350636] [ T9870] ? __pfx_cifs_call_async+0x10/0x10 [cifs]
[ 750.350756] [ T9870] ? __pfx__raw_spin_lock+0x10/0x10
[ 750.350760] [ T9870] ? __kasan_check_write+0x14/0x30
[ 750.350763] [ T98
---truncated---
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In the Linux kernel, the following vulnerability has been resolved:
Bluetooth: hci_core: Fix use-after-free in vhci_flush()
syzbot reported use-after-free in vhci_flush() without repro. [0]
From the splat, a thread close()d a vhci file descriptor while
its device was being used by iotcl() on another thread.
Once the last fd refcnt is released, vhci_release() calls
hci_unregister_dev(), hci_free_dev(), and kfree() for struct
vhci_data, which is set to hci_dev->dev->driver_data.
The problem i ...
In the Linux kernel, the following vulnerability has been resolved:
Bluetooth: hci_core: Fix use-after-free in vhci_flush()
syzbot reported use-after-free in vhci_flush() without repro. [0]
From the splat, a thread close()d a vhci file descriptor while
its device was being used by iotcl() on another thread.
Once the last fd refcnt is released, vhci_release() calls
hci_unregister_dev(), hci_free_dev(), and kfree() for struct
vhci_data, which is set to hci_dev->dev->driver_data.
The problem is that there is no synchronisation after unlinking
hdev from hci_dev_list in hci_unregister_dev(). There might be
another thread still accessing the hdev which was fetched before
the unlink operation.
We can use SRCU for such synchronisation.
Let's run hci_dev_reset() under SRCU and wait for its completion
in hci_unregister_dev().
Another option would be to restore hci_dev->destruct(), which was
removed in commit 587ae086f6e4 ("Bluetooth: Remove unused
hci-destruct cb"). However, this would not be a good solution, as
we should not run hci_unregister_dev() while there are in-flight
ioctl() requests, which could lead to another data-race KCSAN splat.
Note that other drivers seem to have the same problem, for exmaple,
virtbt_remove().
[0]:
BUG: KASAN: slab-use-after-free in skb_queue_empty_lockless include/linux/skbuff.h:1891 [inline]
BUG: KASAN: slab-use-after-free in skb_queue_purge_reason+0x99/0x360 net/core/skbuff.c:3937
Read of size 8 at addr ffff88807cb8d858 by task syz.1.219/6718
CPU: 1 UID: 0 PID: 6718 Comm: syz.1.219 Not tainted 6.16.0-rc1-syzkaller-00196-g08207f42d3ff #0 PREEMPT(full)
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 05/07/2025
Call Trace:
<TASK>
dump_stack_lvl+0x189/0x250 lib/dump_stack.c:120
print_address_description mm/kasan/report.c:408 [inline]
print_report+0xd2/0x2b0 mm/kasan/report.c:521
kasan_report+0x118/0x150 mm/kasan/report.c:634
skb_queue_empty_lockless include/linux/skbuff.h:1891 [inline]
skb_queue_purge_reason+0x99/0x360 net/core/skbuff.c:3937
skb_queue_purge include/linux/skbuff.h:3368 [inline]
vhci_flush+0x44/0x50 drivers/bluetooth/hci_vhci.c:69
hci_dev_do_reset net/bluetooth/hci_core.c:552 [inline]
hci_dev_reset+0x420/0x5c0 net/bluetooth/hci_core.c:592
sock_do_ioctl+0xd9/0x300 net/socket.c:1190
sock_ioctl+0x576/0x790 net/socket.c:1311
vfs_ioctl fs/ioctl.c:51 [inline]
__do_sys_ioctl fs/ioctl.c:907 [inline]
__se_sys_ioctl+0xf9/0x170 fs/ioctl.c:893
do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline]
do_syscall_64+0xfa/0x3b0 arch/x86/entry/syscall_64.c:94
entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7fcf5b98e929
Code: ff ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 40 00 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 a8 ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007fcf5c7b9038 EFLAGS: 00000246 ORIG_RAX: 0000000000000010
RAX: ffffffffffffffda RBX: 00007fcf5bbb6160 RCX: 00007fcf5b98e929
RDX: 0000000000000000 RSI: 00000000400448cb RDI: 0000000000000009
RBP: 00007fcf5ba10b39 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 0000000000000000 R14: 00007fcf5bbb6160 R15: 00007ffd6353d528
</TASK>
Allocated by task 6535:
kasan_save_stack mm/kasan/common.c:47 [inline]
kasan_save_track+0x3e/0x80 mm/kasan/common.c:68
poison_kmalloc_redzone mm/kasan/common.c:377 [inline]
__kasan_kmalloc+0x93/0xb0 mm/kasan/common.c:394
kasan_kmalloc include/linux/kasan.h:260 [inline]
__kmalloc_cache_noprof+0x230/0x3d0 mm/slub.c:4359
kmalloc_noprof include/linux/slab.h:905 [inline]
kzalloc_noprof include/linux/slab.h:1039 [inline]
vhci_open+0x57/0x360 drivers/bluetooth/hci_vhci.c:635
misc_open+0x2bc/0x330 drivers/char/misc.c:161
chrdev_open+0x4c9/0x5e0 fs/char_dev.c:414
do_dentry_open+0xdf0/0x1970 fs/open.c:964
vfs_open+0x3b/0x340 fs/open.c:1094
do_open fs/namei.c:3887 [inline]
path_openat+0x2ee5/0x3830 fs/name
---truncated---
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In the Linux kernel, the following vulnerability has been resolved:
cxl/ras: Fix CPER handler device confusion
By inspection, cxl_cper_handle_prot_err() is making a series of fragile
assumptions that can lead to crashes:
1/ It assumes that endpoints identified in the record are a CXL-type-3
device, nothing guarantees that.
2/ It assumes that the device is bound to the cxl_pci driver, nothing
guarantees that.
3/ Minor, it holds the device lock over the switch-port tracing for no
rea ...
In the Linux kernel, the following vulnerability has been resolved:
cxl/ras: Fix CPER handler device confusion
By inspection, cxl_cper_handle_prot_err() is making a series of fragile
assumptions that can lead to crashes:
1/ It assumes that endpoints identified in the record are a CXL-type-3
device, nothing guarantees that.
2/ It assumes that the device is bound to the cxl_pci driver, nothing
guarantees that.
3/ Minor, it holds the device lock over the switch-port tracing for no
reason as the trace is 100% generated from data in the record.
Correct those by checking that the PCIe endpoint parents a cxl_memdev
before assuming the format of the driver data, and move the lock to where
it is required. Consequently this also makes the implementation ready for
CXL accelerators that are not bound to cxl_pci.
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In the Linux kernel, the following vulnerability has been resolved:
ublk: santizize the arguments from userspace when adding a device
Sanity check the values for queue depth and number of queues
we get from userspace when adding a device.
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In the Linux kernel, the following vulnerability has been resolved:
HID: wacom: fix crash in wacom_aes_battery_handler()
Commit fd2a9b29dc9c ("HID: wacom: Remove AES power_supply after extended
inactivity") introduced wacom_aes_battery_handler() which is scheduled
as a delayed work (aes_battery_work).
In wacom_remove(), aes_battery_work is not canceled. Consequently, if
the device is removed while aes_battery_work is still pending, then hard
crashes or "Oops: general protection fault..." are ...
In the Linux kernel, the following vulnerability has been resolved:
HID: wacom: fix crash in wacom_aes_battery_handler()
Commit fd2a9b29dc9c ("HID: wacom: Remove AES power_supply after extended
inactivity") introduced wacom_aes_battery_handler() which is scheduled
as a delayed work (aes_battery_work).
In wacom_remove(), aes_battery_work is not canceled. Consequently, if
the device is removed while aes_battery_work is still pending, then hard
crashes or "Oops: general protection fault..." are experienced when
wacom_aes_battery_handler() is finally called. E.g., this happens with
built-in USB devices after resume from hibernate when aes_battery_work
was still pending at the time of hibernation.
So, take care to cancel aes_battery_work in wacom_remove().
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In the Linux kernel, the following vulnerability has been resolved:
drm/amd/display: Add sanity checks for drm_edid_raw()
When EDID is retrieved via drm_edid_raw(), it doesn't guarantee to
return proper EDID bytes the caller wants: it may be either NULL (that
leads to an Oops) or with too long bytes over the fixed size raw_edid
array (that may lead to memory corruption). The latter was reported
actually when connected with a bad adapter.
Add sanity checks for drm_edid_raw() to address the ab ...
In the Linux kernel, the following vulnerability has been resolved:
drm/amd/display: Add sanity checks for drm_edid_raw()
When EDID is retrieved via drm_edid_raw(), it doesn't guarantee to
return proper EDID bytes the caller wants: it may be either NULL (that
leads to an Oops) or with too long bytes over the fixed size raw_edid
array (that may lead to memory corruption). The latter was reported
actually when connected with a bad adapter.
Add sanity checks for drm_edid_raw() to address the above corner
cases, and return EDID_BAD_INPUT accordingly.
(cherry picked from commit 648d3f4d209725d51900d6a3ed46b7b600140cdf)
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In the Linux kernel, the following vulnerability has been resolved:
lib/group_cpus: fix NULL pointer dereference from group_cpus_evenly()
While testing null_blk with configfs, echo 0 > poll_queues will trigger
following panic:
BUG: kernel NULL pointer dereference, address: 0000000000000010
Oops: Oops: 0000 [#1] SMP NOPTI
CPU: 27 UID: 0 PID: 920 Comm: bash Not tainted 6.15.0-02023-gadbdb95c8696-dirty #1238 PREEMPT(undef)
Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.16.1-2.fc37 ...
In the Linux kernel, the following vulnerability has been resolved:
lib/group_cpus: fix NULL pointer dereference from group_cpus_evenly()
While testing null_blk with configfs, echo 0 > poll_queues will trigger
following panic:
BUG: kernel NULL pointer dereference, address: 0000000000000010
Oops: Oops: 0000 [#1] SMP NOPTI
CPU: 27 UID: 0 PID: 920 Comm: bash Not tainted 6.15.0-02023-gadbdb95c8696-dirty #1238 PREEMPT(undef)
Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.16.1-2.fc37 04/01/2014
RIP: 0010:__bitmap_or+0x48/0x70
Call Trace:
<TASK>
__group_cpus_evenly+0x822/0x8c0
group_cpus_evenly+0x2d9/0x490
blk_mq_map_queues+0x1e/0x110
null_map_queues+0xc9/0x170 [null_blk]
blk_mq_update_queue_map+0xdb/0x160
blk_mq_update_nr_hw_queues+0x22b/0x560
nullb_update_nr_hw_queues+0x71/0xf0 [null_blk]
nullb_device_poll_queues_store+0xa4/0x130 [null_blk]
configfs_write_iter+0x109/0x1d0
vfs_write+0x26e/0x6f0
ksys_write+0x79/0x180
__x64_sys_write+0x1d/0x30
x64_sys_call+0x45c4/0x45f0
do_syscall_64+0xa5/0x240
entry_SYSCALL_64_after_hwframe+0x76/0x7e
Root cause is that numgrps is set to 0, and ZERO_SIZE_PTR is returned from
kcalloc(), and later ZERO_SIZE_PTR will be deferenced.
Fix the problem by checking numgrps first in group_cpus_evenly(), and
return NULL directly if numgrps is zero.
[[email protected]: also fix the non-SMP version]
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In the Linux kernel, the following vulnerability has been resolved:
io_uring/rsrc: fix folio unpinning
syzbot complains about an unmapping failure:
[ 108.070381][ T14] kernel BUG at mm/gup.c:71!
[ 108.070502][ T14] Internal error: Oops - BUG: 00000000f2000800 [#1] SMP
[ 108.123672][ T14] Hardware name: QEMU KVM Virtual Machine, BIOS edk2-20250221-8.fc42 02/21/2025
[ 108.127458][ T14] Workqueue: iou_exit io_ring_exit_work
[ 108.174205][ T14] Call trace:
[ 108.175649][ T14] ...
In the Linux kernel, the following vulnerability has been resolved:
io_uring/rsrc: fix folio unpinning
syzbot complains about an unmapping failure:
[ 108.070381][ T14] kernel BUG at mm/gup.c:71!
[ 108.070502][ T14] Internal error: Oops - BUG: 00000000f2000800 [#1] SMP
[ 108.123672][ T14] Hardware name: QEMU KVM Virtual Machine, BIOS edk2-20250221-8.fc42 02/21/2025
[ 108.127458][ T14] Workqueue: iou_exit io_ring_exit_work
[ 108.174205][ T14] Call trace:
[ 108.175649][ T14] sanity_check_pinned_pages+0x7cc/0x7d0 (P)
[ 108.178138][ T14] unpin_user_page+0x80/0x10c
[ 108.180189][ T14] io_release_ubuf+0x84/0xf8
[ 108.182196][ T14] io_free_rsrc_node+0x250/0x57c
[ 108.184345][ T14] io_rsrc_data_free+0x148/0x298
[ 108.186493][ T14] io_sqe_buffers_unregister+0x84/0xa0
[ 108.188991][ T14] io_ring_ctx_free+0x48/0x480
[ 108.191057][ T14] io_ring_exit_work+0x764/0x7d8
[ 108.193207][ T14] process_one_work+0x7e8/0x155c
[ 108.195431][ T14] worker_thread+0x958/0xed8
[ 108.197561][ T14] kthread+0x5fc/0x75c
[ 108.199362][ T14] ret_from_fork+0x10/0x20
We can pin a tail page of a folio, but then io_uring will try to unpin
the head page of the folio. While it should be fine in terms of keeping
the page actually alive, mm folks say it's wrong and triggers a debug
warning. Use unpin_user_folio() instead of unpin_user_page*.
[axboe: adapt to current tree, massage commit message]
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In the Linux kernel, the following vulnerability has been resolved:
bnxt_en: Fix double invocation of bnxt_ulp_stop()/bnxt_ulp_start()
Before the commit under the Fixes tag below, bnxt_ulp_stop() and
bnxt_ulp_start() were always invoked in pairs. After that commit,
the new bnxt_ulp_restart() can be invoked after bnxt_ulp_stop()
has been called. This may result in the RoCE driver's aux driver
.suspend() method being invoked twice. The 2nd bnxt_re_suspend()
call will crash when it dereference ...
In the Linux kernel, the following vulnerability has been resolved:
bnxt_en: Fix double invocation of bnxt_ulp_stop()/bnxt_ulp_start()
Before the commit under the Fixes tag below, bnxt_ulp_stop() and
bnxt_ulp_start() were always invoked in pairs. After that commit,
the new bnxt_ulp_restart() can be invoked after bnxt_ulp_stop()
has been called. This may result in the RoCE driver's aux driver
.suspend() method being invoked twice. The 2nd bnxt_re_suspend()
call will crash when it dereferences a NULL pointer:
(NULL ib_device): Handle device suspend call
BUG: kernel NULL pointer dereference, address: 0000000000000b78
PGD 0 P4D 0
Oops: Oops: 0000 [#1] SMP PTI
CPU: 20 UID: 0 PID: 181 Comm: kworker/u96:5 Tainted: G S 6.15.0-rc1 #4 PREEMPT(voluntary)
Tainted: [S]=CPU_OUT_OF_SPEC
Hardware name: Dell Inc. PowerEdge R730/072T6D, BIOS 2.4.3 01/17/2017
Workqueue: bnxt_pf_wq bnxt_sp_task [bnxt_en]
RIP: 0010:bnxt_re_suspend+0x45/0x1f0 [bnxt_re]
Code: 8b 05 a7 3c 5b f5 48 89 44 24 18 31 c0 49 8b 5c 24 08 4d 8b 2c 24 e8 ea 06 0a f4 48 c7 c6 04 60 52 c0 48 89 df e8 1b ce f9 ff <48> 8b 83 78 0b 00 00 48 8b 80 38 03 00 00 a8 40 0f 85 b5 00 00 00
RSP: 0018:ffffa2e84084fd88 EFLAGS: 00010246
RAX: 0000000000000000 RBX: 0000000000000000 RCX: 0000000000000001
RDX: 0000000000000000 RSI: ffffffffb4b6b934 RDI: 00000000ffffffff
RBP: ffffa1760954c9c0 R08: 0000000000000000 R09: c0000000ffffdfff
R10: 0000000000000001 R11: ffffa2e84084fb50 R12: ffffa176031ef070
R13: ffffa17609775000 R14: ffffa17603adc180 R15: 0000000000000000
FS: 0000000000000000(0000) GS:ffffa17daa397000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000000000000b78 CR3: 00000004aaa30003 CR4: 00000000003706f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
<TASK>
bnxt_ulp_stop+0x69/0x90 [bnxt_en]
bnxt_sp_task+0x678/0x920 [bnxt_en]
? __schedule+0x514/0xf50
process_scheduled_works+0x9d/0x400
worker_thread+0x11c/0x260
? __pfx_worker_thread+0x10/0x10
kthread+0xfe/0x1e0
? __pfx_kthread+0x10/0x10
ret_from_fork+0x2b/0x40
? __pfx_kthread+0x10/0x10
ret_from_fork_asm+0x1a/0x30
Check the BNXT_EN_FLAG_ULP_STOPPED flag and do not proceed if the flag
is already set. This will preserve the original symmetrical
bnxt_ulp_stop() and bnxt_ulp_start().
Also, inside bnxt_ulp_start(), clear the BNXT_EN_FLAG_ULP_STOPPED
flag after taking the mutex to avoid any race condition. And for
symmetry, only proceed in bnxt_ulp_start() if the
BNXT_EN_FLAG_ULP_STOPPED is set.
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In the Linux kernel, the following vulnerability has been resolved:
mm/damon/sysfs-schemes: free old damon_sysfs_scheme_filter->memcg_path on write
memcg_path_store() assigns a newly allocated memory buffer to
filter->memcg_path, without deallocating the previously allocated and
assigned memory buffer. As a result, users can leak kernel memory by
continuously writing a data to memcg_path DAMOS sysfs file. Fix the leak
by deallocating the previously set memory buffer.
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In the Linux kernel, the following vulnerability has been resolved:
drm/nouveau: fix a use-after-free in r535_gsp_rpc_push()
The RPC container is released after being passed to r535_gsp_rpc_send().
When sending the initial fragment of a large RPC and passing the
caller's RPC container, the container will be freed prematurely. Subsequent
attempts to send remaining fragments will therefore result in a
use-after-free.
Allocate a temporary RPC container for holding the initial fragment of a
larg ...
In the Linux kernel, the following vulnerability has been resolved:
drm/nouveau: fix a use-after-free in r535_gsp_rpc_push()
The RPC container is released after being passed to r535_gsp_rpc_send().
When sending the initial fragment of a large RPC and passing the
caller's RPC container, the container will be freed prematurely. Subsequent
attempts to send remaining fragments will therefore result in a
use-after-free.
Allocate a temporary RPC container for holding the initial fragment of a
large RPC when sending. Free the caller's container when all fragments
are successfully sent.
[ Rebase onto Blackwell changes. - Danilo ]
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In the Linux kernel, the following vulnerability has been resolved:
drm/msm/a7xx: Call CP_RESET_CONTEXT_STATE
Calling this packet is necessary when we switch contexts because there
are various pieces of state used by userspace to synchronize between BR
and BV that are persistent across submits and we need to make sure that
they are in a "safe" state when switching contexts. Otherwise a
userspace submission in one context could cause another context to
function incorrectly and hang, effectively ...
In the Linux kernel, the following vulnerability has been resolved:
drm/msm/a7xx: Call CP_RESET_CONTEXT_STATE
Calling this packet is necessary when we switch contexts because there
are various pieces of state used by userspace to synchronize between BR
and BV that are persistent across submits and we need to make sure that
they are in a "safe" state when switching contexts. Otherwise a
userspace submission in one context could cause another context to
function incorrectly and hang, effectively a denial of service (although
without leaking data). This was missed during initial a7xx bringup.
Patchwork: https://patchwork.freedesktop.org/patch/654924/
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In the Linux kernel, the following vulnerability has been resolved:
drm/v3d: Avoid NULL pointer dereference in `v3d_job_update_stats()`
The following kernel Oops was recently reported by Mesa CI:
[ 800.139824] Unable to handle kernel NULL pointer dereference at virtual address 0000000000000588
[ 800.148619] Mem abort info:
[ 800.151402] ESR = 0x0000000096000005
[ 800.155141] EC = 0x25: DABT (current EL), IL = 32 bits
[ 800.160444] SET = 0, FnV = 0
[ 800.163488] EA = 0, S1PTW = 0 ...
In the Linux kernel, the following vulnerability has been resolved:
drm/v3d: Avoid NULL pointer dereference in `v3d_job_update_stats()`
The following kernel Oops was recently reported by Mesa CI:
[ 800.139824] Unable to handle kernel NULL pointer dereference at virtual address 0000000000000588
[ 800.148619] Mem abort info:
[ 800.151402] ESR = 0x0000000096000005
[ 800.155141] EC = 0x25: DABT (current EL), IL = 32 bits
[ 800.160444] SET = 0, FnV = 0
[ 800.163488] EA = 0, S1PTW = 0
[ 800.166619] FSC = 0x05: level 1 translation fault
[ 800.171487] Data abort info:
[ 800.174357] ISV = 0, ISS = 0x00000005, ISS2 = 0x00000000
[ 800.179832] CM = 0, WnR = 0, TnD = 0, TagAccess = 0
[ 800.184873] GCS = 0, Overlay = 0, DirtyBit = 0, Xs = 0
[ 800.190176] user pgtable: 4k pages, 39-bit VAs, pgdp=00000001014c2000
[ 800.196607] [0000000000000588] pgd=0000000000000000, p4d=0000000000000000, pud=0000000000000000
[ 800.205305] Internal error: Oops: 0000000096000005 [#1] PREEMPT SMP
[ 800.211564] Modules linked in: vc4 snd_soc_hdmi_codec drm_display_helper v3d cec gpu_sched drm_dma_helper drm_shmem_helper drm_kms_helper drm drm_panel_orientation_quirks snd_soc_core snd_compress snd_pcm_dmaengine snd_pcm i2c_brcmstb snd_timer snd backlight
[ 800.234448] CPU: 0 UID: 0 PID: 0 Comm: swapper/0 Not tainted 6.12.25+rpt-rpi-v8 #1 Debian 1:6.12.25-1+rpt1
[ 800.244182] Hardware name: Raspberry Pi 4 Model B Rev 1.4 (DT)
[ 800.250005] pstate: 600000c5 (nZCv daIF -PAN -UAO -TCO -DIT -SSBS BTYPE=--)
[ 800.256959] pc : v3d_job_update_stats+0x60/0x130 [v3d]
[ 800.262112] lr : v3d_job_update_stats+0x48/0x130 [v3d]
[ 800.267251] sp : ffffffc080003e60
[ 800.270555] x29: ffffffc080003e60 x28: ffffffd842784980 x27: 0224012000000000
[ 800.277687] x26: ffffffd84277f630 x25: ffffff81012fd800 x24: 0000000000000020
[ 800.284818] x23: ffffff8040238b08 x22: 0000000000000570 x21: 0000000000000158
[ 800.291948] x20: 0000000000000000 x19: ffffff8040238000 x18: 0000000000000000
[ 800.299078] x17: ffffffa8c1bd2000 x16: ffffffc080000000 x15: 0000000000000000
[ 800.306208] x14: 0000000000000000 x13: 0000000000000000 x12: 0000000000000000
[ 800.313338] x11: 0000000000000040 x10: 0000000000001a40 x9 : ffffffd83b39757c
[ 800.320468] x8 : ffffffd842786420 x7 : 7fffffffffffffff x6 : 0000000000ef32b0
[ 800.327598] x5 : 00ffffffffffffff x4 : 0000000000000015 x3 : ffffffd842784980
[ 800.334728] x2 : 0000000000000004 x1 : 0000000000010002 x0 : 000000ba4c0ca382
[ 800.341859] Call trace:
[ 800.344294] v3d_job_update_stats+0x60/0x130 [v3d]
[ 800.349086] v3d_irq+0x124/0x2e0 [v3d]
[ 800.352835] __handle_irq_event_percpu+0x58/0x218
[ 800.357539] handle_irq_event+0x54/0xb8
[ 800.361369] handle_fasteoi_irq+0xac/0x240
[ 800.365458] handle_irq_desc+0x48/0x68
[ 800.369200] generic_handle_domain_irq+0x24/0x38
[ 800.373810] gic_handle_irq+0x48/0xd8
[ 800.377464] call_on_irq_stack+0x24/0x58
[ 800.381379] do_interrupt_handler+0x88/0x98
[ 800.385554] el1_interrupt+0x34/0x68
[ 800.389123] el1h_64_irq_handler+0x18/0x28
[ 800.393211] el1h_64_irq+0x64/0x68
[ 800.396603] default_idle_call+0x3c/0x168
[ 800.400606] do_idle+0x1fc/0x230
[ 800.403827] cpu_startup_entry+0x40/0x50
[ 800.407742] rest_init+0xe4/0xf0
[ 800.410962] start_kernel+0x5e8/0x790
[ 800.414616] __primary_switched+0x80/0x90
[ 800.418622] Code: 8b170277 8b160296 11000421 b9000861 (b9401ac1)
[ 800.424707] ---[ end trace 0000000000000000 ]---
[ 800.457313] ---[ end Kernel panic - not syncing: Oops: Fatal exception in interrupt ]---
This issue happens when the file descriptor is closed before the jobs
submitted by it are completed. When the job completes, we update the
global GPU stats and the per-fd GPU stats, which are exposed through
fdinfo. If the file descriptor was closed, then the struct `v3d_file_priv`
and its stats were already freed and we can't update the per-fd stats.
Therefore, if the file descriptor was already closed, don't u
---truncated---
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In the Linux kernel, the following vulnerability has been resolved:
net: clear the dst when changing skb protocol
A not-so-careful NAT46 BPF program can crash the kernel
if it indiscriminately flips ingress packets from v4 to v6:
BUG: kernel NULL pointer dereference, address: 0000000000000000
ip6_rcv_core (net/ipv6/ip6_input.c:190:20)
ipv6_rcv (net/ipv6/ip6_input.c:306:8)
process_backlog (net/core/dev.c:6186:4)
napi_poll (net/core/dev.c:6906:9)
net_rx_action (net/core/de ...
In the Linux kernel, the following vulnerability has been resolved:
net: clear the dst when changing skb protocol
A not-so-careful NAT46 BPF program can crash the kernel
if it indiscriminately flips ingress packets from v4 to v6:
BUG: kernel NULL pointer dereference, address: 0000000000000000
ip6_rcv_core (net/ipv6/ip6_input.c:190:20)
ipv6_rcv (net/ipv6/ip6_input.c:306:8)
process_backlog (net/core/dev.c:6186:4)
napi_poll (net/core/dev.c:6906:9)
net_rx_action (net/core/dev.c:7028:13)
do_softirq (kernel/softirq.c:462:3)
netif_rx (net/core/dev.c:5326:3)
dev_loopback_xmit (net/core/dev.c:4015:2)
ip_mc_finish_output (net/ipv4/ip_output.c:363:8)
NF_HOOK (./include/linux/netfilter.h:314:9)
ip_mc_output (net/ipv4/ip_output.c:400:5)
dst_output (./include/net/dst.h:459:9)
ip_local_out (net/ipv4/ip_output.c:130:9)
ip_send_skb (net/ipv4/ip_output.c:1496:8)
udp_send_skb (net/ipv4/udp.c:1040:8)
udp_sendmsg (net/ipv4/udp.c:1328:10)
The output interface has a 4->6 program attached at ingress.
We try to loop the multicast skb back to the sending socket.
Ingress BPF runs as part of netif_rx(), pushes a valid v6 hdr
and changes skb->protocol to v6. We enter ip6_rcv_core which
tries to use skb_dst(). But the dst is still an IPv4 one left
after IPv4 mcast output.
Clear the dst in all BPF helpers which change the protocol.
Try to preserve metadata dsts, those may carry non-routing
metadata.
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In the Linux kernel, the following vulnerability has been resolved:
LoongArch: Fix panic caused by NULL-PMD in huge_pte_offset()
ERROR INFO:
CPU 25 Unable to handle kernel paging request at virtual address 0x0
...
Call Trace:
[<900000000023c30c>] huge_pte_offset+0x3c/0x58
[<900000000057fd4c>] hugetlb_follow_page_mask+0x74/0x438
[<900000000051fee8>] __get_user_pages+0xe0/0x4c8
[<9000000000522414>] faultin_page_range+0x84/0x380
[<9000000000564e8c>] madvise_vma_behavior+0x534/0xa4 ...
In the Linux kernel, the following vulnerability has been resolved:
LoongArch: Fix panic caused by NULL-PMD in huge_pte_offset()
ERROR INFO:
CPU 25 Unable to handle kernel paging request at virtual address 0x0
...
Call Trace:
[<900000000023c30c>] huge_pte_offset+0x3c/0x58
[<900000000057fd4c>] hugetlb_follow_page_mask+0x74/0x438
[<900000000051fee8>] __get_user_pages+0xe0/0x4c8
[<9000000000522414>] faultin_page_range+0x84/0x380
[<9000000000564e8c>] madvise_vma_behavior+0x534/0xa48
[<900000000056689c>] do_madvise+0x1bc/0x3e8
[<9000000000566df4>] sys_madvise+0x24/0x38
[<90000000015b9e88>] do_syscall+0x78/0x98
[<9000000000221f18>] handle_syscall+0xb8/0x158
In some cases, pmd may be NULL and rely on NULL as the return value for
processing, so it is necessary to determine this situation here.
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In the Linux kernel, the following vulnerability has been resolved:
ACPI: platform_profile: Avoid initializing on non-ACPI platforms
The platform profile driver is loaded even on platforms that do not have
ACPI enabled. The initialization of the sysfs entries was recently moved
from platform_profile_register() to the module init call, and those
entries need acpi_kobj to be initialized which is not the case when ACPI
is disabled.
This results in the following warning:
WARNING: CPU: 5 PID: 1 ...
In the Linux kernel, the following vulnerability has been resolved:
ACPI: platform_profile: Avoid initializing on non-ACPI platforms
The platform profile driver is loaded even on platforms that do not have
ACPI enabled. The initialization of the sysfs entries was recently moved
from platform_profile_register() to the module init call, and those
entries need acpi_kobj to be initialized which is not the case when ACPI
is disabled.
This results in the following warning:
WARNING: CPU: 5 PID: 1 at fs/sysfs/group.c:131 internal_create_group+0xa22/0xdd8
Modules linked in:
CPU: 5 UID: 0 PID: 1 Comm: swapper/0 Tainted: G W 6.15.0-rc7-dirty #6 PREEMPT
Tainted: [W]=WARN
Hardware name: riscv-virtio,qemu (DT)
epc : internal_create_group+0xa22/0xdd8
ra : internal_create_group+0xa22/0xdd8
Call Trace:
internal_create_group+0xa22/0xdd8
sysfs_create_group+0x22/0x2e
platform_profile_init+0x74/0xb2
do_one_initcall+0x198/0xa9e
kernel_init_freeable+0x6d8/0x780
kernel_init+0x28/0x24c
ret_from_fork+0xe/0x18
Fix this by checking if ACPI is enabled before trying to create sysfs
entries.
[ rjw: Subject and changelog edits ]
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In the Linux kernel, the following vulnerability has been resolved:
wifi: ath12k: fix NULL access in assign channel context handler
Currently, when ath12k_mac_assign_vif_to_vdev() fails, the radio handle
(ar) gets accessed from the link VIF handle (arvif) for debug logging, This
is incorrect. In the fail scenario, radio handle is NULL. Fix the NULL
access, avoid radio handle access by moving to the hardware debug logging
helper function (ath12k_hw_warn).
Tested-on: QCN9274 hw2.0 PCI WLAN.WBE. ...
In the Linux kernel, the following vulnerability has been resolved:
wifi: ath12k: fix NULL access in assign channel context handler
Currently, when ath12k_mac_assign_vif_to_vdev() fails, the radio handle
(ar) gets accessed from the link VIF handle (arvif) for debug logging, This
is incorrect. In the fail scenario, radio handle is NULL. Fix the NULL
access, avoid radio handle access by moving to the hardware debug logging
helper function (ath12k_hw_warn).
Tested-on: QCN9274 hw2.0 PCI WLAN.WBE.1.3.1-00173-QCAHKSWPL_SILICONZ-1
Tested-on: WCN7850 hw2.0 PCI WLAN.HMT.1.0.c5-00481-QCAHMTSWPL_V1.0_V2.0_SILICONZ-3
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In the Linux kernel, the following vulnerability has been resolved:
wifi: ath12k: fix invalid access to memory
In ath12k_dp_rx_msdu_coalesce(), rxcb is fetched from skb and boolean
is_continuation is part of rxcb.
Currently, after freeing the skb, the rxcb->is_continuation accessed
again which is wrong since the memory is already freed.
This might lead use-after-free error.
Hence, fix by locally defining bool is_continuation from rxcb,
so that after freeing skb, is_continuation can be used.
...
In the Linux kernel, the following vulnerability has been resolved:
wifi: ath12k: fix invalid access to memory
In ath12k_dp_rx_msdu_coalesce(), rxcb is fetched from skb and boolean
is_continuation is part of rxcb.
Currently, after freeing the skb, the rxcb->is_continuation accessed
again which is wrong since the memory is already freed.
This might lead use-after-free error.
Hence, fix by locally defining bool is_continuation from rxcb,
so that after freeing skb, is_continuation can be used.
Compile tested only.
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In the Linux kernel, the following vulnerability has been resolved:
wifi: ath12k: Prevent sending WMI commands to firmware during firmware crash
Currently, we encounter the following kernel call trace when a firmware
crash occurs. This happens because the host sends WMI commands to the
firmware while it is in recovery, causing the commands to fail and
resulting in the kernel call trace.
Set the ATH12K_FLAG_CRASH_FLUSH and ATH12K_FLAG_RECOVERY flags when the
host driver receives the firmware c ...
In the Linux kernel, the following vulnerability has been resolved:
wifi: ath12k: Prevent sending WMI commands to firmware during firmware crash
Currently, we encounter the following kernel call trace when a firmware
crash occurs. This happens because the host sends WMI commands to the
firmware while it is in recovery, causing the commands to fail and
resulting in the kernel call trace.
Set the ATH12K_FLAG_CRASH_FLUSH and ATH12K_FLAG_RECOVERY flags when the
host driver receives the firmware crash notification from MHI. This
prevents sending WMI commands to the firmware during recovery.
Call Trace:
<TASK>
dump_stack_lvl+0x75/0xc0
register_lock_class+0x6be/0x7a0
? __lock_acquire+0x644/0x19a0
__lock_acquire+0x95/0x19a0
lock_acquire+0x265/0x310
? ath12k_ce_send+0xa2/0x210 [ath12k]
? find_held_lock+0x34/0xa0
? ath12k_ce_send+0x56/0x210 [ath12k]
_raw_spin_lock_bh+0x33/0x70
? ath12k_ce_send+0xa2/0x210 [ath12k]
ath12k_ce_send+0xa2/0x210 [ath12k]
ath12k_htc_send+0x178/0x390 [ath12k]
ath12k_wmi_cmd_send_nowait+0x76/0xa0 [ath12k]
ath12k_wmi_cmd_send+0x62/0x190 [ath12k]
ath12k_wmi_pdev_bss_chan_info_request+0x62/0xc0 [ath1
ath12k_mac_op_get_survey+0x2be/0x310 [ath12k]
ieee80211_dump_survey+0x99/0x240 [mac80211]
nl80211_dump_survey+0xe7/0x470 [cfg80211]
? kmalloc_reserve+0x59/0xf0
genl_dumpit+0x24/0x70
netlink_dump+0x177/0x360
__netlink_dump_start+0x206/0x280
genl_family_rcv_msg_dumpit.isra.22+0x8a/0xe0
? genl_family_rcv_msg_attrs_parse.isra.23+0xe0/0xe0
? genl_op_lock.part.12+0x10/0x10
? genl_dumpit+0x70/0x70
genl_rcv_msg+0x1d0/0x290
? nl80211_del_station+0x330/0x330 [cfg80211]
? genl_get_cmd_both+0x50/0x50
netlink_rcv_skb+0x4f/0x100
genl_rcv+0x1f/0x30
netlink_unicast+0x1b6/0x260
netlink_sendmsg+0x31a/0x450
__sock_sendmsg+0xa8/0xb0
____sys_sendmsg+0x1e4/0x260
___sys_sendmsg+0x89/0xe0
? local_clock_noinstr+0xb/0xc0
? rcu_is_watching+0xd/0x40
? kfree+0x1de/0x370
? __sys_sendmsg+0x7a/0xc0
Tested-on: QCN9274 hw2.0 PCI WLAN.WBE.1.4.1-00199-QCAHKSWPL_SILICONZ-1
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In the Linux kernel, the following vulnerability has been resolved:
wifi: ath12k: fix node corruption in ar->arvifs list
In current WLAN recovery code flow, ath12k_core_halt() only reinitializes
the "arvifs" list head. This will cause the list node immediately following
the list head to become an invalid list node. Because the prev of that node
still points to the list head "arvifs", but the next of the list head
"arvifs" no longer points to that list node.
When a WLAN recovery occurs during ...
In the Linux kernel, the following vulnerability has been resolved:
wifi: ath12k: fix node corruption in ar->arvifs list
In current WLAN recovery code flow, ath12k_core_halt() only reinitializes
the "arvifs" list head. This will cause the list node immediately following
the list head to become an invalid list node. Because the prev of that node
still points to the list head "arvifs", but the next of the list head
"arvifs" no longer points to that list node.
When a WLAN recovery occurs during the execution of a vif removal, and it
happens before the spin_lock_bh(&ar->data_lock) in
ath12k_mac_vdev_delete(), list_del() will detect the previously mentioned
situation, thereby triggering a kernel panic.
The fix is to remove and reinitialize all vif list nodes from the list head
"arvifs" during WLAN halt. The reinitialization is to make the list nodes
valid, ensuring that the list_del() in ath12k_mac_vdev_delete() can execute
normally.
Call trace:
__list_del_entry_valid_or_report+0xd4/0x100 (P)
ath12k_mac_remove_link_interface.isra.0+0xf8/0x2e4 [ath12k]
ath12k_scan_vdev_clean_work+0x40/0x164 [ath12k]
cfg80211_wiphy_work+0xfc/0x100
process_one_work+0x164/0x2d0
worker_thread+0x254/0x380
kthread+0xfc/0x100
ret_from_fork+0x10/0x20
The change is mostly copied from the ath11k patch:
https://lore.kernel.org/all/[email protected]/
Tested-on: QCN9274 hw2.0 PCI WLAN.WBE.1.4.1-00199-QCAHKSWPL_SILICONZ-1
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