PT-2026-61172 · Linux · Linux

CVE-2026-63855 · Published 2026-07-19 · Updated 2026-07-19

NVD

CVSS v3.1

7.8

High

Base vector

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

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)

Fix

Related Identifiers

CVE-2026-63855

Affected Products

Linux

References · 6

• https://nvd.nist.gov/vuln/detail/CVE-2026-63855 · Security Note
• https://git.kernel.org/stable/c/2c6fb056567efb49f8674108b86088a1cfaa86d0 · Note
• https://git.kernel.org/stable/c/8f0ea4524dc71c6c9ec97f2711f46e12f624140f · Note
• https://git.kernel.org/stable/c/5a3c6f76cab164a5d803084908d7050f649ab7f9 · Note
• https://git.kernel.org/stable/c/4f317863a3ab212a027d8c8c3cc3af4e3fb95704 · Note
• https://git.kernel.org/stable/c/602d4c5872b25ddd4d82fb2025efb9a05b187bb3 · Note