CVE-2026-89820

In the Linux kernel, the following vulnerability has been resolved: drm/amd/display: fix dc_lock leak on GPU reset error paths On GPU reset, dm_suspend() takes dc_lock and leaves it for dm_resume() to drop. If amdgpu_dm_commit_zero_streams() or dm_dmub_hw_init() fails, the function returns with the lock still held. The matching resume path is then skipped, so every later dc_lock take hangs. Release the cached DC state and unlock before returning the error.

• https://git.kernel.org/stable/c/295d2bf42061db490254e748f9344545bb7faf19
• https://git.kernel.org/stable/c/92a9eebd2a1f892fe482154d83f9f1626bc73d3b
• https://git.kernel.org/stable/c/dac29cbb405b912742f4f7eda833cec8e7a53780