CVE-2022-48764

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  2. Vulnerabilities (CVE)
  3. CVE-2022-48764

5.3 /10

CVSS v3 : MEDIUM

V3 Legend

Vector :

Exploitability : 1.8 / Impact : 3.4

Attack Vector LOCAL

Attack Complexity LOW

Privileges Required LOW

User Interaction NONE

Confidentiality Impact LOW

Integrity Impact LOW

Availability Impact LOW

Scope UNCHANGED

I

n the Linux kernel, the following vulnerability has been resolved: KVM: x86: Free kvm_cpuid_entry2 array on post-KVM_RUN KVM_SET_CPUID{,2} Free the "struct kvm_cpuid_entry2" array on successful post-KVM_RUN KVM_SET_CPUID{,2} to fix a memory leak, the callers of kvm_set_cpuid() free the array only on failure. BUG: memory leak unreferenced object 0xffff88810963a800 (size 2048): comm "syz-executor025", pid 3610, jiffies 4294944928 (age 8.080s) hex dump (first 32 bytes): 00 00 00 00 00 00 00 00 00 00 00 00 0d 00 00 00 ................ 47 65 6e 75 6e 74 65 6c 69 6e 65 49 00 00 00 00 GenuntelineI.... backtrace: [<ffffffff814948ee>] kmalloc_node include/linux/slab.h:604 [inline] [<ffffffff814948ee>] kvmalloc_node+0x3e/0x100 mm/util.c:580 [<ffffffff814950f2>] kvmalloc include/linux/slab.h:732 [inline] [<ffffffff814950f2>] vmemdup_user+0x22/0x100 mm/util.c:199 [<ffffffff8109f5ff>] kvm_vcpu_ioctl_set_cpuid2+0x8f/0xf0 arch/x86/kvm/cpuid.c:423 [<ffffffff810711b9>] kvm_arch_vcpu_ioctl+0xb99/0x1e60 arch/x86/kvm/x86.c:5251 [<ffffffff8103e92d>] kvm_vcpu_ioctl+0x4ad/0x950 arch/x86/kvm/../../../virt/kvm/kvm_main.c:4066 [<ffffffff815afacc>] vfs_ioctl fs/ioctl.c:51 [inline] [<ffffffff815afacc>] __do_sys_ioctl fs/ioctl.c:874 [inline] [<ffffffff815afacc>] __se_sys_ioctl fs/ioctl.c:860 [inline] [<ffffffff815afacc>] __x64_sys_ioctl+0xfc/0x140 fs/ioctl.c:860 [<ffffffff844a3335>] do_syscall_x64 arch/x86/entry/common.c:50 [inline] [<ffffffff844a3335>] do_syscall_64+0x35/0xb0 arch/x86/entry/common.c:80 [<ffffffff84600068>] entry_SYSCALL_64_after_hwframe+0x44/0xae

References
Link Resource
https://git.kernel.org/stable/c/811f95ff95270e6048197821434d9301e3d7f07c Patch
https://git.kernel.org/stable/c/b9ee734a14bb685b2088f2176d82b34cb4e30dbc Patch
https://git.kernel.org/stable/c/811f95ff95270e6048197821434d9301e3d7f07c Patch
https://git.kernel.org/stable/c/b9ee734a14bb685b2088f2176d82b34cb4e30dbc Patch
Configurations

Configuration 1 (hide)

cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*
History

24 Mar 2025, 18:16

Type Values Removed Values Added
CWE CWE-401
First Time Linux linux Kernel
Linux
References () https://git.kernel.org/stable/c/811f95ff95270e6048197821434d9301e3d7f07c - () https://git.kernel.org/stable/c/811f95ff95270e6048197821434d9301e3d7f07c - Patch
References () https://git.kernel.org/stable/c/b9ee734a14bb685b2088f2176d82b34cb4e30dbc - () https://git.kernel.org/stable/c/b9ee734a14bb685b2088f2176d82b34cb4e30dbc - Patch
CPE cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*

21 Nov 2024, 07:33

Type Values Removed Values Added
References () https://git.kernel.org/stable/c/811f95ff95270e6048197821434d9301e3d7f07c - () https://git.kernel.org/stable/c/811f95ff95270e6048197821434d9301e3d7f07c -
References () https://git.kernel.org/stable/c/b9ee734a14bb685b2088f2176d82b34cb4e30dbc - () https://git.kernel.org/stable/c/b9ee734a14bb685b2088f2176d82b34cb4e30dbc -

30 Oct 2024, 16:35

Type Values Removed Values Added
CVSS v2 : unknown
v3 : unknown 		v2 : unknown
v3 : 5.3
Summary
  • (es) En el kernel de Linux, se ha resuelto la siguiente vulnerabilidad: KVM: x86: Libere la matriz kvm_cpuid_entry2 en KVM_RUN KVM_SET_CPUID{,2} posterior a KVM_RUN KVM_SET_CPUID{,2} Libere la matriz "struct kvm_cpuid_entry2" en KVM_RUN KVM_SET_CPUID{,2} posterior a éxito para corregir una pérdida de memoria , las personas que llaman a kvm_set_cpuid() liberan la matriz solo en caso de falla. ERROR: pérdida de memoria, objeto sin referencia 0xffff88810963a800 (size 2048): comm "syz-executor025", pid 3610, jiffies 4294944928 (age 8.080s) hex dump (first 32 bytes): 00 00 00 00 00 00 00 00 00 00 00 00 0d 00 00 00 ................ 47 65 6e 75 6e 74 65 6c 69 6e 65 49 00 00 00 00 GenuntelineI.... backtrace: [] kmalloc_node include/linux/slab.h:604 [inline] [] kvmalloc_node+0x3e/0x100 mm/util.c:580 [] kvmalloc include/linux/slab.h:732 [inline] [] vmemdup_user+0x22/0x100 mm/util.c:199 [] kvm_vcpu_ioctl_set_cpuid2+0x8f/0xf0 arch/x86/kvm/cpuid.c:423 [] kvm_arch_vcpu_ioctl+0xb99/0x1e60 arch/x86/kvm/x86.c:5251 [] kvm_vcpu_ioctl+0x4ad/0x950 arch/x86/kvm/../../../virt/kvm/kvm_main.c:4066 [] vfs_ioctl fs/ioctl.c:51 [inline] [] __do_sys_ioctl fs/ioctl.c:874 [inline] [] __se_sys_ioctl fs/ioctl.c:860 [inline] [] __x64_sys_ioctl+0xfc/0x140 fs/ioctl.c:860 [] do_syscall_x64 arch/x86/entry/common.c:50 [inline] [] do_syscall_64+0x35/0xb0 arch/x86/entry/common.c:80 [] entry_SYSCALL_64_after_hwframe+0x44/0xae

20 Jun 2024, 12:15

Type Values Removed Values Added
New CVE
Information

Published : 2024-06-20 12:15

Updated : 2025-03-24 18:16

NVD link : CVE-2022-48764

Mitre link : CVE-2022-48764

CVE.ORG link : CVE-2022-48764

JSON object : View

Products Affected

linux

CWE
CWE-401

Missing Release of Memory after Effective Lifetime