CVE-2026-63855CWE-20

CVE-2026-63855

High · published July 19, 2026

CVSS v3.1
7.8
EPSS
0%
Percentile
6.6
In the wild
Unconfirmed
What it is

In the Linux kernel, the following vulnerability has been resolved:

drm/amdgpu/vcn: set no_user_fence for VCN v2.5 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 efc9dd5590894109bce9a0bfe1fa5592dd6b20b1)

The record
Technical detail
CVSS v3.1
7.8 · HIGH
Vector
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
CVSS v4.0
Not supplied
EPSS
0.00175 · 6.6th percentile
Weakness
CWE-20 · Improper Input Validation
Published
2026-07-19T19:16Z
References (5)
https://git.kernel.org/stable/c/2c6fb056567efb49f8674108b86088a1cfaa86d0 · 416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/4f317863a3ab212a027d8c8c3cc3af4e3fb95704 · 416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/5a3c6f76cab164a5d803084908d7050f649ab7f9 · 416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/602d4c5872b25ddd4d82fb2025efb9a05b187bb3 · 416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/8f0ea4524dc71c6c9ec97f2711f46e12f624140f · 416baaa9-dc9f-4396-8d5f-8c081fb06d67
EPSS history
Timeline
  • 19 JUL 14:04Z
    drm/amdgpu/vcn: set no_user_fence for VCN v2.5 enc/dec rings
    cvelistv5