CVE-2023-53095
MEDIUM
MEDIUM
Priority: 0.01
BB Relevance:
36/100
Published: 2025-05-02
Modified: 2026-11-05
First seen: 2026-11-05
Status: active
Attack Surface
Low Complexity
No Interaction
CVSS Vector Breakdown
AV:
Local
AC:
Low
PR:
Low
UI:
None
S:
Unchanged
C:
None
I:
None
A:
High
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().
Weakness Classification (1)
Affected Software (7)
| Vendor | Product | Version |
|---|---|---|
| Linux | Linux | 6a9b028994025f5033f10d1da30b29dfdc713384 < 9ba1720f6c4a0f13c3f3cb5c28132ee75555d04f |
| Linux | Linux | 6a9b028994025f5033f10d1da30b29dfdc713384 < 9d9b1f9f7a72d83ebf173534e76b246349f32374 |
| Linux | Linux | 6a9b028994025f5033f10d1da30b29dfdc713384 < 9a9a8fe26751334b7739193a94eba741073b8a55 |
| Linux | Linux | 5.19 |
| linux | linux_kernel | 5.19 – 6.1.21 |
| linux | linux_kernel | 6.3 |
| linux | linux_kernel | 6.3 |