CVE-2026-63849

In the Linux kernel, the following vulnerability has been resolved: drm/amdgpu/vcn: set no_user_fence for VCN v5.0.1 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 e16be95a2c3ee712b142cb27d2dca0b461181359)

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

2026-10-22

Record from

the NVD, synced 2026-10-23

Affected

• linux:linux_kernel

References

• https://git.kernel.org/stable/c/081ef0e46c9cdd26c0db0ef721470393d36b6655
• https://git.kernel.org/stable/c/5a4bffd67e94944ed3db26a959346cfb7fabaecd
• https://git.kernel.org/stable/c/8f4954722eab88e10c4ea0c0d3b1269c31421d3a

Check your stackJSON