CVE-2026-63853

In the Linux kernel, the following vulnerability has been resolved: drm/amdgpu/vcn: set nouserfence for VCN v4.0 enc ring VCN encoder and decoder rings do not support 64-bit user fence writes, reject CS submissions with user fences. cherry picked from commit fd852c048b46f9825e904a4f3f4538fe9d8827...

CVE-2026-63843

In the Linux kernel, the following vulnerability has been resolved: drm/amdgpu/jpeg: set nouserfence for JPEG v4.0.5 ring JPEG rings do not support 64-bit user fence writes, reject CS submissions with user fences. cherry picked from commit f05d0a4f21fc720116d6e238f23308b199891058...

CVE-2026-63855 drm/amdgpu/vcn: set no_user_fence for VCN v2.5 enc/dec rings

In the Linux kernel, the following vulnerability has been resolved: drm/amdgpu/vcn: set nouserfence for VCN v2.5 enc/dec rings VCN encoder and decoder rings do not support 64-bit user fence writes, reject CS submissions with user fences. cherry picked from commit...

EUVD-2026-45537

In the Linux kernel, the following vulnerability has been resolved: drm/amdgpu/vcn: set nouserfence for VCN v4.0 enc ring VCN encoder and decoder rings do not support 64-bit user fence writes, reject CS submissions with user fences. cherry picked from commit fd852c048b46f9825e904a4f3f4538fe9d8827...

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...