{"id":"CVE-2024-49919","summary":"drm/amd/display: Add null check for head_pipe in dcn201_acquire_free_pipe_for_layer","details":"In the Linux kernel, the following vulnerability has been resolved:\n\ndrm/amd/display: Add null check for head_pipe in dcn201_acquire_free_pipe_for_layer\n\nThis commit addresses a potential null pointer dereference issue in the\n`dcn201_acquire_free_pipe_for_layer` function. The issue could occur\nwhen `head_pipe` is null.\n\nThe fix adds a check to ensure `head_pipe` is not null before asserting\nit. If `head_pipe` is null, the function returns NULL to prevent a\npotential null pointer dereference.\n\nReported by smatch:\ndrivers/gpu/drm/amd/amdgpu/../display/dc/resource/dcn201/dcn201_resource.c:1016 dcn201_acquire_free_pipe_for_layer() error: we previously assumed 'head_pipe' could be null (see line 1010)","modified":"2026-04-02T12:21:08.428415Z","published":"2024-10-21T18:01:45.769Z","related":["SUSE-SU-2024:3983-1","SUSE-SU-2024:3984-1","SUSE-SU-2024:3985-1","SUSE-SU-2024:3986-1","SUSE-SU-2024:4318-1","SUSE-SU-2024:4364-1","SUSE-SU-2024:4387-1","SUSE-SU-2025:20163-1","SUSE-SU-2025:20164-1","SUSE-SU-2025:20246-1","SUSE-SU-2025:20247-1","USN-7276-1","USN-7277-1","openSUSE-SU-2024:14500-1","openSUSE-SU-2025:14705-1"],"database_specific":{"osv_generated_from":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2024/49xxx/CVE-2024-49919.json","cna_assigner":"Linux"},"references":[{"type":"WEB","url":"https://git.kernel.org/stable/c/16ce8fd94da8599bb6f0496895d392a69aead1c0"},{"type":"WEB","url":"https://git.kernel.org/stable/c/390d757621f5f35d11a63ed7d9d3262ead240064"},{"type":"WEB","url":"https://git.kernel.org/stable/c/8a1b1655a490a492a5a6987254c935ecce4eb9de"},{"type":"WEB","url":"https://git.kernel.org/stable/c/f22f4754aaa47d8c59f166ba3042182859e5dff7"},{"type":"ADVISORY","url":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2024/49xxx/CVE-2024-49919.json"},{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2024-49919"},{"type":"PACKAGE","url":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git"}],"affected":[{"ranges":[{"type":"GIT","repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","events":[{"introduced":"4562236b3bc0a28aeb6ee93b2d8a849a4c4e1c7c"},{"fixed":"16ce8fd94da8599bb6f0496895d392a69aead1c0"},{"fixed":"390d757621f5f35d11a63ed7d9d3262ead240064"},{"fixed":"8a1b1655a490a492a5a6987254c935ecce4eb9de"},{"fixed":"f22f4754aaa47d8c59f166ba3042182859e5dff7"}]}],"database_specific":{"source":"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2024-49919.json"}}],"schema_version":"1.7.5"}