CVE-2026-63853

HIGH
MEDIUM Priority: 0.01 BB Relevance: 41/100
Published: 2026-07-19 Modified: 2026-10-26 First seen: 2026-10-29 Status: active

Attack Surface

Low Complexity No Interaction Conf. Impact Integ. Impact

CVSS Vector Breakdown

AV: Local
AC: Low
PR: Low
UI: None
S: Unchanged
C: High
I: High
A: 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)

Weakness Classification (1)

Affected Software (5)

VendorProductVersion
linux linux_kernel 5.19 – 6.6.160
linux linux_kernel 6.7 – 6.12.114
linux linux_kernel 6.13 – 6.18.33
linux linux_kernel 6.19 – 7.0.10
linux linux_kernel 7.1

Bug Bounty Relevance

41 / 100
✓ Low complexity
✓ No user interaction

CVSS Score

7.8 / 10.0 v3.1
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

EPSS — Exploitation Probability

0.18%
Raw Score 0.001750
Percentile 7.0%
Date 2026-10-29

EPSS Trend

2026-10-29
0.00175
2026-10-28
0.00175

Intelligence Sources

nvd ref →