Description
In the Linux kernel, the following vulnerability has been resolved: drm/amd/display: Add NULL check for clk_mgr and clk_mgr->funcs in dcn30_init_hw This commit addresses a potential null pointer dereference issue in the `dcn30_init_hw` function. The issue could occur when `dc->clk_mgr` or `dc->clk_mgr->funcs` is null. The fix adds a check to ensure `dc->clk_mgr` and `dc->clk_mgr->funcs` 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/dcn30/dcn30_hwseq.c:789 dcn30_init_hw() error: we previously assumed 'dc->clk_mgr' could be null (see line 628)
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 < 23cb6139543580dc36743586ca86fbb3f7ab2c9daffected4562236b3bc0a28aeb6ee93b2d8a849a4c4e1c7c to < 205e3b96cc9aa9211fd2c849a16245cf236b2d36affected4562236b3bc0a28aeb6ee93b2d8a849a4c4e1c7c to < 5443c83eb8fd2f88c71ced38848fbf744d6206a2affected4562236b3bc0a28aeb6ee93b2d8a849a4c4e1c7c to < 56c326577971adc3a230f29dfd3aa3abdd505f5daffected4562236b3bc0a28aeb6ee93b2d8a849a4c4e1c7c to < cba7fec864172dadd953daefdd26e01742b71a6aaffected
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/23cb6139543580dc36743586ca86fbb3f7ab2c9d ↗
- https://git.kernel.org/stable/c/205e3b96cc9aa9211fd2c849a16245cf236b2d36 ↗
- https://git.kernel.org/stable/c/5443c83eb8fd2f88c71ced38848fbf744d6206a2 ↗
- https://git.kernel.org/stable/c/56c326577971adc3a230f29dfd3aa3abdd505f5d ↗
- https://git.kernel.org/stable/c/cba7fec864172dadd953daefdd26e01742b71a6a ↗
- https://lists.debian.org/debian-lts-announce/2025/03/msg00001.html ↗