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)
Product status
4562236b3bc0a28aeb6ee93b2d8a849a4c4e1c7c (git) before 23cb6139543580dc36743586ca86fbb3f7ab2c9d
4562236b3bc0a28aeb6ee93b2d8a849a4c4e1c7c (git) before 205e3b96cc9aa9211fd2c849a16245cf236b2d36
4562236b3bc0a28aeb6ee93b2d8a849a4c4e1c7c (git) before 5443c83eb8fd2f88c71ced38848fbf744d6206a2
4562236b3bc0a28aeb6ee93b2d8a849a4c4e1c7c (git) before 56c326577971adc3a230f29dfd3aa3abdd505f5d
4562236b3bc0a28aeb6ee93b2d8a849a4c4e1c7c (git) before cba7fec864172dadd953daefdd26e01742b71a6a
4.15
Any version before 4.15
6.1.120 (semver)
6.6.64 (semver)
6.10.14 (semver)
6.11.3 (semver)
6.12 (original_commit_for_fix)
References
lists.debian.org/debian-lts-announce/2025/03/msg00001.html
git.kernel.org/...c/23cb6139543580dc36743586ca86fbb3f7ab2c9d
git.kernel.org/...c/205e3b96cc9aa9211fd2c849a16245cf236b2d36
git.kernel.org/...c/5443c83eb8fd2f88c71ced38848fbf744d6206a2
git.kernel.org/...c/56c326577971adc3a230f29dfd3aa3abdd505f5d
git.kernel.org/...c/cba7fec864172dadd953daefdd26e01742b71a6a
