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)
Affected products
Version statuses are supplied by the assigning organization. Consult the original record for detailed ranges and platform conditions.
Linux Linux
Default version status: unaffected
4562236b3bc0a28aeb6ee93b2d8a849a4c4e1c7c to < 0d94d9cbd9fec7344d230c4f7b781826f7799c60affected4562236b3bc0a28aeb6ee93b2d8a849a4c4e1c7c to < ec1be3c527b4a5fc85bcc1b0be7cec08bf60c796affected4562236b3bc0a28aeb6ee93b2d8a849a4c4e1c7c to < f0454b3cb0584a6bf275aeb49be61a760fd546a2affected4562236b3bc0a28aeb6ee93b2d8a849a4c4e1c7c to < 7d1854c86d02cea8f8a0c0ca05f4ab14292baf3daffected4562236b3bc0a28aeb6ee93b2d8a849a4c4e1c7c to < c395fd47d1565bd67671f45cca281b3acc2c31efaffected
Linux Linux
Default version status: affected
4.15affected0 to < 4.15unaffected6.1.120 to ≤ 6.1.*unaffected6.6.64 to ≤ 6.6.*unaffected6.10.14 to ≤ 6.10.*unaffected6.11.3 to ≤ 6.11.*unaffected6.12 to ≤ *unaffected
References
- https://git.kernel.org/stable/c/0d94d9cbd9fec7344d230c4f7b781826f7799c60 ↗
- https://git.kernel.org/stable/c/ec1be3c527b4a5fc85bcc1b0be7cec08bf60c796 ↗
- https://git.kernel.org/stable/c/f0454b3cb0584a6bf275aeb49be61a760fd546a2 ↗
- https://git.kernel.org/stable/c/7d1854c86d02cea8f8a0c0ca05f4ab14292baf3d ↗
- https://git.kernel.org/stable/c/c395fd47d1565bd67671f45cca281b3acc2c31ef ↗
- https://lists.debian.org/debian-lts-announce/2025/03/msg00001.html ↗