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 dcn401_init_hw This commit addresses a potential null pointer dereference issue in the `dcn401_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/dcn401/dcn401_hwseq.c:416 dcn401_init_hw() error: we previously assumed 'dc->clk_mgr' could be null (see line 225)
Product status
4562236b3bc0a28aeb6ee93b2d8a849a4c4e1c7c (git) before ac1c41e318074d8a9ea925787e366be15d7645e8
4562236b3bc0a28aeb6ee93b2d8a849a4c4e1c7c (git) before 4b6377f0e96085cbec96eb7f0b282430ccdd3d75
4.15
Any version before 4.15
6.11.3 (semver)
6.12 (original_commit_for_fix)
References
git.kernel.org/...c/ac1c41e318074d8a9ea925787e366be15d7645e8
git.kernel.org/...c/4b6377f0e96085cbec96eb7f0b282430ccdd3d75