CVE-2026-63855
HIGH severity · CVSS 7.8 · Improper input validation
7.8CVSS HIGH
Summary
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)
Impact & exploitability
Attack vectorLocal
Attack complexityLow
Privileges requiredLow
User interactionNone
Confidentiality impactHigh
Integrity impactHigh
Availability impactHigh
Exploit probability (EPSS)0%
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Affected products we track (1)
Recommendation
Apply the vendor fix promptly. Open any affected product above for its exact safe version.
Official patch: https://git.kernel.org/stable/c/2c6fb056567efb49f8674108b86088a1cfaa86d0 ↗
Additional information
- NVD record
- https://git.kernel.org/stable/c/2c6fb056567efb49f8674108b86088a1cfaa86d0Patch
- https://git.kernel.org/stable/c/4f317863a3ab212a027d8c8c3cc3af4e3fb95704Patch
- https://git.kernel.org/stable/c/5a3c6f76cab164a5d803084908d7050f649ab7f9Patch
- https://git.kernel.org/stable/c/602d4c5872b25ddd4d82fb2025efb9a05b187bb3Patch
- https://git.kernel.org/stable/c/8f0ea4524dc71c6c9ec97f2711f46e12f624140fPatch
- https://git.kernel.org/stable/c/8156e258025f2a22fcf7486c96848ac3cd3541dd