CVE-2026-63853

high

Description

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)

References

https://git.kernel.org/stable/c/6bdd2ed6458d35c368fbe9550a4d7f342abd3a92

https://git.kernel.org/stable/c/51f694221047c84fa185be98210eb2c354ffb8c6

https://git.kernel.org/stable/c/1286b6872de0aee1feeeaa6dbac86369806de9a5

Details

Source: Mitre, NVD

Published: 2026-07-19

Updated: 2026-07-20

Risk Information

CVSS v2

Base Score: 6.8

Vector: CVSS2#AV:L/AC:L/Au:S/C:C/I:C/A:C

Severity: Medium

CVSS v3

Base Score: 7.8

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

Severity: High

EPSS

EPSS: 0.00155