CVE-2026-63846

Summary: CVE-2026-63846 concerns the Linux kernel DRM/amdgpu JPEG v3.0 ring. The issue is that JPEG rings do not support 64-bit user fence writes, so submissions using user fences were rejected, which is the root cause described as a patch in the kernel commit (cherry picked from commit 4d7d774f1...

CVE-2026-63846 drm/amdgpu/jpeg: set no_user_fence for JPEG v3.0 ring

In the Linux kernel, the following vulnerability has been resolved: drm/amdgpu/jpeg: set nouserfence for JPEG v3.0 ring JPEG rings do not support 64-bit user fence writes, reject CS submissions with user fences. cherry picked from commit 4d7d774f100efb5089c86a1fb8c5bf47c63fc9ef...