CVE-2024-49943

In the Linux kernel, the following vulnerability has been resolved: drm/xe/guc_submit: add missing locking in wedged_fini Any non-wedged queue can have a zero refcount here and can be running concurrently with an async queue destroy, therefore dereferencing the queue ptr to check wedge status after the lookup can trigger UAF if queue is not wedged. Fix this by keeping the submission_state lock held around the check to postpone the free and make the check safe, before dropping again around the put() to avoid the deadlock. (cherry picked from commit d28af0b6b9580b9f90c265a7da0315b0ad20bbfd)

CVSS v3 5.5 MEDIUM

5.5^/10

CVSS v3 : MEDIUM

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

References

Link	Resource
https://git.kernel.org/stable/c/790533e44bfc7af929842fccd9674c9f424d4627	Patch
https://git.kernel.org/stable/c/d88f9bab7e62dd0dbe983fa70cf040042a60cc84	Patch

Configurations

Configuration 1 (hide)

OR	cpe:2.3:o:linux:linux_kernel::::::::
	cpe:2.3:o:linux:linux_kernel:6.12:rc1::::::

History

No history.

Information

Published : 2024-10-21 18:15

Updated : 2024-11-01 14:54

NVD link : CVE-2024-49943

Mitre link : CVE-2024-49943

CVE.ORG link : CVE-2024-49943

JSON object : View

Products Affected

linux

linux_kernel

CWE

CWE-667

Improper Locking

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