Description
In the Linux kernel, the following vulnerability has been resolved:
drm/amd/display: Add NULL check for clk_mgr in dcn32_init_hw
This commit addresses a potential null pointer dereference issue in the `dcn32_init_hw` function. The issue could occur when `dc->clk_mgr` is null.
The fix adds a check to ensure `dc->clk_mgr` is not null before accessing its functions. This prevents a potential null pointer dereference.
Reported by smatch: drivers/gpu/drm/amd/amdgpu/../display/dc/hwss/dcn32/dcn32_hwseq.c:961 dcn32_init_hw() error: we previously assumed 'dc->clk_mgr' could be null (see line 782)
Metrics
CVSS 3.1 5.5/10
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:HWeakness enumeration
Affected software
| Vendor | Product | Versions |
|---|---|---|
| Linux | Linux | >= 4562236b3bc0a28aeb6ee93b2d8a849a4c4e1c7c, < 0d94d9cbd9fec7344d230c4f7b781826f7799c60; >= 4562236b3bc0a28aeb6ee93b2d8a849a4c4e1c7c, < ec1be3c527b4a5fc85bcc1b0be7cec08bf60c796; >= 4562236b3bc0a28aeb6ee93b2d8a849a4c4e1c7c, < f0454b3cb0584a6bf275aeb49be61a760fd546a2; >= 4562236b3bc0a28aeb6ee93b2d8a849a4c4e1c7c, < 7d1854c86d02cea8f8a0c0ca05f4ab14292baf3d; >= 4562236b3bc0a28aeb6ee93b2d8a849a4c4e1c7c, < c395fd47d1565bd67671f45cca281b3acc2c31ef |
| Linux | Linux | 4.15 |
References
- https://git.kernel.org/stable/c/0d94d9cbd9fec7344d230c4f7b781826f7799c60
- https://git.kernel.org/stable/c/7d1854c86d02cea8f8a0c0ca05f4ab14292baf3dPatch
- https://git.kernel.org/stable/c/c395fd47d1565bd67671f45cca281b3acc2c31efPatch
- https://git.kernel.org/stable/c/ec1be3c527b4a5fc85bcc1b0be7cec08bf60c796
- https://git.kernel.org/stable/c/f0454b3cb0584a6bf275aeb49be61a760fd546a2Patch
- https://lists.debian.org/debian-lts-announce/2025/03/msg00001.html
Timeline
- Published
- Oct 21, 2024
- Last modified
- Jun 17, 2026
- NVD status
- Modified