CVE-2024-36925

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  3. CVE-2024-36925

5.5 /10

CVSS v3 : MEDIUM

V3 Legend

Vector :

Exploitability : 1.8 / Impact : 3.6

Attack Vector LOCAL

Attack Complexity LOW

Privileges Required LOW

User Interaction NONE

Confidentiality Impact NONE

Integrity Impact NONE

Availability Impact HIGH

Scope UNCHANGED

I

n the Linux kernel, the following vulnerability has been resolved: swiotlb: initialise restricted pool list_head when SWIOTLB_DYNAMIC=y Using restricted DMA pools (CONFIG_DMA_RESTRICTED_POOL=y) in conjunction with dynamic SWIOTLB (CONFIG_SWIOTLB_DYNAMIC=y) leads to the following crash when initialising the restricted pools at boot-time: | Unable to handle kernel NULL pointer dereference at virtual address 0000000000000008 | Internal error: Oops: 0000000096000005 [#1] PREEMPT SMP | pc : rmem_swiotlb_device_init+0xfc/0x1ec | lr : rmem_swiotlb_device_init+0xf0/0x1ec | Call trace: | rmem_swiotlb_device_init+0xfc/0x1ec | of_reserved_mem_device_init_by_idx+0x18c/0x238 | of_dma_configure_id+0x31c/0x33c | platform_dma_configure+0x34/0x80 faddr2line reveals that the crash is in the list validation code: include/linux/list.h:83 include/linux/rculist.h:79 include/linux/rculist.h:106 kernel/dma/swiotlb.c:306 kernel/dma/swiotlb.c:1695 because add_mem_pool() is trying to list_add_rcu() to a NULL 'mem->pools'. Fix the crash by initialising the 'mem->pools' list_head in rmem_swiotlb_device_init() before calling add_mem_pool().

References
Link Resource
https://git.kernel.org/stable/c/75961ffb5cb3e5196f19cae7683f35cc88b50800 Patch
https://git.kernel.org/stable/c/f2a6b3ed20f2dea4cb645abc6a73c4595662adca Patch
https://git.kernel.org/stable/c/f62e0fefcdfe2c05ccb1aa80521a69524eea9c84 Patch
https://git.kernel.org/stable/c/75961ffb5cb3e5196f19cae7683f35cc88b50800 Patch
https://git.kernel.org/stable/c/f2a6b3ed20f2dea4cb645abc6a73c4595662adca Patch
https://git.kernel.org/stable/c/f62e0fefcdfe2c05ccb1aa80521a69524eea9c84 Patch
Configurations

Configuration 1 (hide)

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

21 Nov 2024, 09:22

Type Values Removed Values Added
References () https://git.kernel.org/stable/c/75961ffb5cb3e5196f19cae7683f35cc88b50800 - Patch () https://git.kernel.org/stable/c/75961ffb5cb3e5196f19cae7683f35cc88b50800 - Patch
References () https://git.kernel.org/stable/c/f2a6b3ed20f2dea4cb645abc6a73c4595662adca - Patch () https://git.kernel.org/stable/c/f2a6b3ed20f2dea4cb645abc6a73c4595662adca - Patch
References () https://git.kernel.org/stable/c/f62e0fefcdfe2c05ccb1aa80521a69524eea9c84 - Patch () https://git.kernel.org/stable/c/f62e0fefcdfe2c05ccb1aa80521a69524eea9c84 - Patch

10 Jun 2024, 19:21

Type Values Removed Values Added
First Time Linux
Linux linux Kernel
References () https://git.kernel.org/stable/c/75961ffb5cb3e5196f19cae7683f35cc88b50800 - () https://git.kernel.org/stable/c/75961ffb5cb3e5196f19cae7683f35cc88b50800 - Patch
References () https://git.kernel.org/stable/c/f2a6b3ed20f2dea4cb645abc6a73c4595662adca - () https://git.kernel.org/stable/c/f2a6b3ed20f2dea4cb645abc6a73c4595662adca - Patch
References () https://git.kernel.org/stable/c/f62e0fefcdfe2c05ccb1aa80521a69524eea9c84 - () https://git.kernel.org/stable/c/f62e0fefcdfe2c05ccb1aa80521a69524eea9c84 - Patch
CVSS v2 : unknown
v3 : unknown 		v2 : unknown
v3 : 5.5
CWE CWE-476
CPE cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*
Summary
  • (es) En el kernel de Linux, se ha resuelto la siguiente vulnerabilidad: swiotlb: inicializa el grupo restringido list_head cuando SWIOTLB_DYNAMIC=y El uso de grupos DMA restringidos (CONFIG_DMA_RESTRICTED_POOL=y) junto con SWIOTLB dinámico (CONFIG_SWIOTLB_DYNAMIC=y) provoca el siguiente bloqueo al inicializar el grupo restringido grupos en el momento del arranque: | No se puede manejar la desreferencia del puntero NULL del kernel en la dirección virtual 0000000000000008 | Error interno: Ups: 0000000096000005 [#1] SMP ANTICIPADO | ordenador personal: rmem_swiotlb_device_init+0xfc/0x1ec | lr: rmem_swiotlb_device_init+0xf0/0x1ec | Rastreo de llamadas: | rmem_swiotlb_device_init+0xfc/0x1ec | of_reserved_mem_device_init_by_idx+0x18c/0x238 | of_dma_configure_id+0x31c/0x33c | platform_dma_configure+0x34/0x80 faddr2line revela que el bloqueo está en el código de validación de la lista: include/linux/list.h:83 include/linux/rculist.h:79 include/linux/rculist.h:106 kernel/dma/swiotlb. c:306 kernel/dma/swiotlb.c:1695 porque add_mem_pool() está intentando list_add_rcu() a un NULL 'mem->pools'. Solucione el problema inicializando el list_head 'mem->pools' en rmem_swiotlb_device_init() antes de llamar a add_mem_pool().

30 May 2024, 16:15

Type Values Removed Values Added
New CVE
Information

Published : 2024-05-30 16:15

Updated : 2024-11-21 09:22

NVD link : CVE-2024-36925

Mitre link : CVE-2024-36925

CVE.ORG link : CVE-2024-36925

JSON object : View

Products Affected

linux

CWE
CWE-476

NULL Pointer Dereference