drm/amd/display: Add null check for head_pipe in dcn201_acquire_free_pipe_for_layer

These records connect through source-stated identifiers. Shared identifiers or dates alone do not establish shared exposure, root cause or applicability.

CVE-2024-49919 · Microsoft / collected KEV context

cve-program · CVE-2024-49919

• https://git.kernel.org/stable/c/d11ae22a8beee9771d933c1e5c95e217edcdbd38
• https://git.kernel.org/stable/c/16ce8fd94da8599bb6f0496895d392a69aead1c0
• https://git.kernel.org/stable/c/390d757621f5f35d11a63ed7d9d3262ead240064
• https://git.kernel.org/stable/c/8a1b1655a490a492a5a6987254c935ecce4eb9de
• https://git.kernel.org/stable/c/f22f4754aaa47d8c59f166ba3042182859e5dff7

• drm/amd/display: Add null check for head_pipe in dcn201_acquire_free_pipe_for_layer · Affected-version evidence changed · 30 Oct 2026