CVE-2024-49908: drm/amd/display: Add null check for 'afb' in amdgpu_dm_update_cursor (v2)
First published: Mon Oct 21 2024(Updated: )
In the Linux kernel, the following vulnerability has been resolved: drm/amd/display: Add null check for 'afb' in amdgpu_dm_update_cursor (v2) This commit adds a null check for the 'afb' variable in the amdgpu_dm_update_cursor function. Previously, 'afb' was assumed to be null at line 8388, but was used later in the code without a null check. This could potentially lead to a null pointer dereference. Changes since v1: - Moved the null check for 'afb' to the line where 'afb' is used. (Alex) Fixes the below: drivers/gpu/drm/amd/amdgpu/../display/amdgpu_dm/amdgpu_dm.c:8433 amdgpu_dm_update_cursor() error: we previously assumed 'afb' could be null (see line 8388)
Credit: 416baaa9-dc9f-4396-8d5f-8c081fb06d67 416baaa9-dc9f-4396-8d5f-8c081fb06d67
| Affected Software | Affected Version | How to fix |
|---|---|---|
| Linux Linux kernel | <6.11.3 | |
| debian/linux | <=5.10.223-1<=5.10.226-1<=6.1.115-1<=6.1.119-1 | 6.11.10-1 6.12.5-1 |
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Reference Links
- https://git.kernel.org/stable/c/0fe20258b4989b9112b5e9470df33a0939403fd4
- https://git.kernel.org/stable/c/a742168b6a39ead257da53bcbe472384d6e14a1b
- https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2024-49908
- https://nvd.nist.gov/vuln/detail/CVE-2024-49908
- https://launchpad.net/bugs/cve/CVE-2024-49908
- https://security-tracker.debian.org/tracker/CVE-2024-49908
- https://ubuntu.com/security/CVE-2024-49908
- https://git.kernel.org/linus/0fe20258b4989b9112b5e9470df33a0939403fd4
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