CVE-2026-63851
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 v4.0.5 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 084d94ac93707bdda07efb5cee786f632de4219b)
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/589a254bf3e88204c8402b9cbccd5e23a0af990f ↗
Additional information
- NVD record
- https://git.kernel.org/stable/c/589a254bf3e88204c8402b9cbccd5e23a0af990fPatch
- https://git.kernel.org/stable/c/6d9a98c5ed65ba92a09e4ca5a5f6941448145529Patch
- https://git.kernel.org/stable/c/75091030f07b7957cc0646cd52e2d9d15f611483Patch
- https://git.kernel.org/stable/c/7f23b5c420b9f68a210c29c5123bace670aa8cc9Patch