CVE-2026-80908 drm/amdgpu: Reject UVD message with dimensions above 4096

In the Linux kernel, the following vulnerability has been resolved: drm/amdgpu: Reject UVD message with dimensions above 4096 Fixes potential overflow in DPB size calculations. cherry picked from commit 05e1387d151f71569fbe122d2c89f9db0c21dc10...

EUVD-2026-71666

In the Linux kernel, the following vulnerability has been resolved: drm/amdgpu: Fix UVD dpb min size calculation for H264 This should use actual number of references from the decode message, instead of maximum derived from level. cherry picked from commit 64b525edb7e7bdfcdc77883c5e413804e2396856...