CVE-2026-63854

In the Linux kernel, the following vulnerability has been resolved: drm/amdgpu/vcn: set no_user_fence for VCN v3.0 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 663bed3c7b8b9a7624b0d95d300ddae034ad0614)

CVSS 3.1

7.8CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

EPSS

0.2% chance of exploitation in the next 30 days; higher than 6% of CVEs (scores of 2026-10-25)

CWE

CWE-20

Published

2026-07-19

Modified

2026-10-19

Record from

the NVD, synced 2026-10-21

References

• https://git.kernel.org/stable/c/26c4f38529ac78930c9c4713e16ebc5b689bb0a3
• https://git.kernel.org/stable/c/2d6525e7b2504f5bbfe9417cddc1e8da858791dd
• https://git.kernel.org/stable/c/b076e45e6f757a2829e80d0144c1b5f201bee5af
• https://git.kernel.org/stable/c/e74fc9c72c1ba78d0de0b849f5929c3b39a8e20c
• https://git.kernel.org/stable/c/f1e5a6660d7cbf006079126d9babbf0ccf538c6b

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