CVE-2022-49133

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  2. Vulnerabilities (CVE)
  3. CVE-2022-49133

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: drm/amdkfd: svm range restore work deadlock when process exit kfd_process_notifier_release flush svm_range_restore_work which calls svm_range_list_lock_and_flush_work to flush deferred_list work, but if deferred_list work mmput release the last user, it will call exit_mmap -> notifier_release, it is deadlock with below backtrace. Move flush svm_range_restore_work to kfd_process_wq_release to avoid deadlock. Then svm_range_restore_work take task->mm ref to avoid mm is gone while validating and mapping ranges to GPU. Workqueue: events svm_range_deferred_list_work [amdgpu] Call Trace: wait_for_completion+0x94/0x100 __flush_work+0x12a/0x1e0 __cancel_work_timer+0x10e/0x190 cancel_delayed_work_sync+0x13/0x20 kfd_process_notifier_release+0x98/0x2a0 [amdgpu] __mmu_notifier_release+0x74/0x1f0 exit_mmap+0x170/0x200 mmput+0x5d/0x130 svm_range_deferred_list_work+0x104/0x230 [amdgpu] process_one_work+0x220/0x3c0

References
Link Resource
https://git.kernel.org/stable/c/6225bb3a88d22594aacea2485dc28ca12d596721 Patch
https://git.kernel.org/stable/c/858822905f4bf44100d63c5e22e263109976f7cb Patch
https://git.kernel.org/stable/c/a6be83086e91891081e0589e4b4645bf4643e897 Patch
Configurations

Configuration 1 (hide)

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

15 Oct 2025, 19:46

Type Values Removed Values Added
First Time Linux linux Kernel
Linux
CVSS v2 : unknown
v3 : unknown 		v2 : unknown
v3 : 5.5
References () https://git.kernel.org/stable/c/6225bb3a88d22594aacea2485dc28ca12d596721 - () https://git.kernel.org/stable/c/6225bb3a88d22594aacea2485dc28ca12d596721 - Patch
References () https://git.kernel.org/stable/c/858822905f4bf44100d63c5e22e263109976f7cb - () https://git.kernel.org/stable/c/858822905f4bf44100d63c5e22e263109976f7cb - Patch
References () https://git.kernel.org/stable/c/a6be83086e91891081e0589e4b4645bf4643e897 - () https://git.kernel.org/stable/c/a6be83086e91891081e0589e4b4645bf4643e897 - Patch
CWE NVD-CWE-noinfo
CPE cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*
Summary
  • (es) En el kernel de Linux, se ha resuelto la siguiente vulnerabilidad: drm/amdkfd: bloqueo del trabajo de restauración de rango de svm cuando el proceso sale kfd_process_notifier_release limpia svm_range_restore_work que llama a svm_range_list_lock_and_flush_work para limpiar el trabajo de deferred_list, pero si el trabajo de deferred_list mmput libera al último usuario, llamará a exit_mmap -> notifier_release, es un bloqueo con el siguiente backtrace. Mueva el vaciado de svm_range_restore_work a kfd_process_wq_release para evitar el bloqueo. Luego, svm_range_restore_work toma la referencia task->mm para evitar que mm desaparezca mientras se validan y asignan rangos a la GPU. Cola de trabajo: eventos svm_range_deferred_list_work [amdgpu] Seguimiento de llamadas: wait_for_completion+0x94/0x100 __flush_work+0x12a/0x1e0 __cancel_work_timer+0x10e/0x190 cancel_delayed_work_sync+0x13/0x20 kfd_process_notifier_release+0x98/0x2a0 [amdgpu] __mmu_notifier_release+0x74/0x1f0 exit_mmap+0x170/0x200 mmput+0x5d/0x130 svm_range_deferred_list_work+0x104/0x230 [amdgpu] process_one_work+0x220/0x3c0

26 Feb 2025, 07:00

Type Values Removed Values Added
New CVE
Information

Published : 2025-02-26 07:00

Updated : 2025-10-15 19:46

NVD link : CVE-2022-49133

Mitre link : CVE-2022-49133

CVE.ORG link : CVE-2022-49133

JSON object : View

Products Affected

linux

CWE
NVD-CWE-noinfo