In the Linux kernel, the following vulnerability has been resolved:

drm/amd/display: Add null check for top_pipe_to_program in commit_planes_for_stream

This commit addresses a null pointer dereference issue in the
`commit_planes_for_stream` function at line 4140. The issue could occur
when `top_pipe_to_program` is null.

The fix adds a check to ensure `top_pipe_to_program` is not null before
accessing its stream_res. This prevents a null pointer dereference.

Reported by smatch:
drivers/gpu/drm/amd/amdgpu/../display/dc/core/dc.c:4140 commit_planes_for_stream() error: we previously assumed 'top_pipe_to_program' could be null (see line 3906)

kernel.org https://git.kernel.org/stable/c/1ebfa6663807c144be8c8b6727375012409d2356 [No types assigned]

kernel.org https://git.kernel.org/stable/c/3929e382e4758aff42da0102a60d13337c99d3b8 [No types assigned]

kernel.org https://git.kernel.org/stable/c/40193ff73630adf76bc0d82398f7d90fb576dba4 [No types assigned]

kernel.org https://git.kernel.org/stable/c/66d71a72539e173a9b00ca0b1852cbaa5f5bf1ad [No types assigned]

kernel.org https://git.kernel.org/stable/c/73efd2a611b62fee71a7b7f27d9d08bb60da8a72 [No types assigned]

kernel.org https://git.kernel.org/stable/c/8ab59527852a6f7780aad6185729550ca0569122 [No types assigned]

kernel.org https://git.kernel.org/stable/c/e47e563c6f0db7d792a559301862c19ead0dfc2f [No types assigned]