Description (CNA)
In the Linux kernel, the following vulnerability has been resolved: drm/amd/display: Add null check for head_pipe in dcn32_acquire_idle_pipe_for_head_pipe_in_layer This commit addresses a potential null pointer dereference issue in the `dcn32_acquire_idle_pipe_for_head_pipe_in_layer` function. The issue could occur when `head_pipe` is null. The fix adds a check to ensure `head_pipe` is not null before asserting it. If `head_pipe` is null, the function returns NULL to prevent a potential null pointer dereference. Reported by smatch: drivers/gpu/drm/amd/amdgpu/../display/dc/resource/dcn32/dcn32_resource.c:2690 dcn32_acquire_idle_pipe_for_head_pipe_in_layer() error: we previously assumed 'head_pipe' could be null (see line 2681)
Affected (CNA)
| Vendor / product | Versions |
|---|---|
| Linux / Linux | affected 4562236b3bc0a28aeb6ee93b2d8a849a4c4e1c7c before 180280f3c4621d699d903773bb84bf7f0bc6a891; affected 4562236b3bc0a28aeb6ee93b2d8a849a4c4e1c7c before 4f47292f488fa7041284dca1f1244116c18721f1; affected 4562236b3bc0a28aeb6ee93b2d8a849a4c4e1c7c before 96d4c2ee18d732a248d053aae8c4a27cb1d68d1c; affected 4562236b3bc0a28aeb6ee93b2d8a849a4c4e1c7c before ac2140449184a26eac99585b7f69814bd3ba8f2d |
| Linux / Linux | affected 4.15; unaffected 0 before 4.15; unaffected 6.6.160 through 6.6.*; unaffected 6.10.14 through 6.10.*; unaffected 6.11.3 through 6.11.*; unaffected 6.12 through * |
CWE
No CWE identifiers supplied.
References
- https://git.kernel.org/stable/c/180280f3c4621d699d903773bb84bf7f0bc6a891
- https://git.kernel.org/stable/c/4f47292f488fa7041284dca1f1244116c18721f1
- https://git.kernel.org/stable/c/96d4c2ee18d732a248d053aae8c4a27cb1d68d1c
- https://git.kernel.org/stable/c/ac2140449184a26eac99585b7f69814bd3ba8f2d
ADP enrichment
No English description supplied.
No references supplied.