PT-2026-61173 · Linux · Linux

CVE-2026-63856 · 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 v2.0 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 e2b5499fca55f1a32960a311bbb62e35891eaf73)

Fix

Related Identifiers

CVE-2026-63856

Affected Products

Linux

References · 6

• https://nvd.nist.gov/vuln/detail/CVE-2026-63856 · Security Note
• https://git.kernel.org/stable/c/8d80b293b41fcb5e9396db93e788b0f4ebcbafb7 · Note
• https://git.kernel.org/stable/c/f264019be80de79f84f464846451445923bffea0 · Note
• https://git.kernel.org/stable/c/ac06ce5cac9e711281585d09d00c6efcd9b86396 · Note
• https://git.kernel.org/stable/c/5e777bc4cbe928ac0fd95e368fee1540f2ce4db2 · Note
• https://git.kernel.org/stable/c/c71aecae98e42dcf2baf462df50b3a2cf1a93fe4 · Note