CVE-2026-63853

In the Linux kernel, the following vulnerability has been resolved: drm/amdgpu/vcn: set no_user_fence 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 fd852c048b46f9825e904a4f3f4538fe9d8827d9)

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

2026-10-21

Record from

the NVD, synced 2026-10-22

References

• https://git.kernel.org/stable/c/1286b6872de0aee1feeeaa6dbac86369806de9a5
• https://git.kernel.org/stable/c/51f694221047c84fa185be98210eb2c354ffb8c6
• https://git.kernel.org/stable/c/525cc9df654365c147ae61e5562cf599ea2257f7
• https://git.kernel.org/stable/c/6bdd2ed6458d35c368fbe9550a4d7f342abd3a92
• https://git.kernel.org/stable/c/d8df8918677136b018d71d0b94a1f6b816715946

Check your stackJSON