CVE - CVE-2023-53095

CVE-ID
CVE-2023-53095	Learn more at National Vulnerability Database (NVD) • CVSS Severity Rating • Fix Information • Vulnerable Software Versions • SCAP Mappings • CPE Information
Description
In the Linux kernel, the following vulnerability has been resolved: drm/ttm: Fix a NULL pointer dereference The LRU mechanism may look up a resource in the process of being removed from an object. The locking rules here are a bit unclear but it looks currently like res->bo assignment is protected by the LRU lock, whereas bo->resource is protected by the object lock, while clearing of bo->resource is also protected by the LRU lock. This means that if we check that bo->resource points to the LRU resource under the LRU lock we should be safe. So perform that check before deciding to swap out a bo. That avoids dereferencing a NULL bo->resource in ttm_bo_swapout().
References
Note: References are provided for the convenience of the reader to help distinguish between vulnerabilities. The list is not intended to be complete.
MISC:https://git.kernel.org/stable/c/9a9a8fe26751334b7739193a94eba741073b8a55 URL:https://git.kernel.org/stable/c/9a9a8fe26751334b7739193a94eba741073b8a55 MISC:https://git.kernel.org/stable/c/9ba1720f6c4a0f13c3f3cb5c28132ee75555d04f URL:https://git.kernel.org/stable/c/9ba1720f6c4a0f13c3f3cb5c28132ee75555d04f MISC:https://git.kernel.org/stable/c/9d9b1f9f7a72d83ebf173534e76b246349f32374 URL:https://git.kernel.org/stable/c/9d9b1f9f7a72d83ebf173534e76b246349f32374
Assigning CNA
kernel.org
Date Record Created
20250502	Disclaimer: The record creation date may reflect when the CVE ID was allocated or reserved, and does not necessarily indicate when this vulnerability was discovered, shared with the affected vendor, publicly disclosed, or updated in CVE.
Phase (Legacy)
Assigned (20250502)
Votes (Legacy)

Comments (Legacy)

Proposed (Legacy)
N/A
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