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

drm/amd/display: Handle null 'stream_status' in 'planes_changed_for_existing_stream'

This commit adds a null check for 'stream_status' in the function
'planes_changed_for_existing_stream'. Previously, the code assumed
'stream_status' could be null, but did not handle the case where it was
actually null. This could lead to a null pointer dereference.

Reported by smatch:
drivers/gpu/drm/amd/amdgpu/../display/dc/core/dc_resource.c:3784 planes_changed_for_existing_stream() error: we previously assumed 'stream_status' could be null (see line 3774)

References

• https://nvd.nist.gov/vuln/detail/CVE-2024-49912
• https://git.kernel.org/stable/c/0ffd9fb03bbc99ed1eb5dc989d5c7da2faac0659
• https://git.kernel.org/stable/c/4778982c73d6c9f3fdbdbc6b6c8aa18df98251af
• https://git.kernel.org/stable/c/8141f21b941710ecebe49220b69822cab3abd23d
• https://git.kernel.org/stable/c/c4b699b93496c423b0e5b584d4eb4ab849313bcf
• https://git.kernel.org/stable/c/ec6c32b58e6c4e87760e797c525e99a460c82bcb