{"id":"CVE-2024-49919","title":"drm/amd/display: Add null check for head_pipe in dcn201_acquire_free_pipe_for_layer","summary":"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_acq…","severity":"none","vendor":"Linux","product":"Linux","affected":["Linux >= 4562236b3bc0a28aeb6ee93b2d8a849a4c4e1c7c < d11ae22a8beee9771d933c1e5c95e217edcdbd38","Linux >= 4562236b3bc0a28aeb6ee93b2d8a849a4c4e1c7c < 16ce8fd94da8599bb6f0496895d392a69aead1c0","Linux >= 4562236b3bc0a28aeb6ee93b2d8a849a4c4e1c7c < 390d757621f5f35d11a63ed7d9d3262ead240064","Linux >= 4562236b3bc0a28aeb6ee93b2d8a849a4c4e1c7c < 8a1b1655a490a492a5a6987254c935ecce4eb9de","Linux >= 4562236b3bc0a28aeb6ee93b2d8a849a4c4e1c7c < f22f4754aaa47d8c59f166ba3042182859e5dff7","Linux 4.15"],"ssvc":{"exploitation":"none","automatable":"no","technicalImpact":"partial","timestamp":"2024-10-22T13:40:36.842077Z"},"published":"2024-10-21","updated":"2026-10-30","sourceUpdated":"2026-10-30T12:19:37.211Z","source":"CVEORG","sourceUrl":"https://www.cve.org/CVERecord?id=CVE-2024-49919","references":[{"url":"https://git.kernel.org/stable/c/d11ae22a8beee9771d933c1e5c95e217edcdbd38"},{"url":"https://git.kernel.org/stable/c/16ce8fd94da8599bb6f0496895d392a69aead1c0"},{"url":"https://git.kernel.org/stable/c/390d757621f5f35d11a63ed7d9d3262ead240064"},{"url":"https://git.kernel.org/stable/c/8a1b1655a490a492a5a6987254c935ecce4eb9de"},{"url":"https://git.kernel.org/stable/c/f22f4754aaa47d8c59f166ba3042182859e5dff7"}],"tags":["cve.org"],"epss":0.00237,"epssPercentile":0.14786,"ingestedAt":"2026-11-03T14:47:02.507Z","slug":"CVE-2024-49919","body":"## Overview\n\nIn 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)\n\n## Affected\n\n- `Linux >= 4562236b3bc0a28aeb6ee93b2d8a849a4c4e1c7c < d11ae22a8beee9771d933c1e5c95e217edcdbd38`\n- `Linux >= 4562236b3bc0a28aeb6ee93b2d8a849a4c4e1c7c < 16ce8fd94da8599bb6f0496895d392a69aead1c0`\n- `Linux >= 4562236b3bc0a28aeb6ee93b2d8a849a4c4e1c7c < 390d757621f5f35d11a63ed7d9d3262ead240064`\n- `Linux >= 4562236b3bc0a28aeb6ee93b2d8a849a4c4e1c7c < 8a1b1655a490a492a5a6987254c935ecce4eb9de`\n- `Linux >= 4562236b3bc0a28aeb6ee93b2d8a849a4c4e1c7c < f22f4754aaa47d8c59f166ba3042182859e5dff7`\n- `Linux 4.15`\n\n## Remediation\n\nRefer to the linked advisories for vendor-supplied fixes and affected version ranges.","depth":"sunlit","depthScore":3,"depthScoreParts":{"impact":2.8,"likelihood":0,"exploitation":0,"ransomware":0},"changes":[]}