CVE-2026-63851
High
drm/amdgpu/vcn: set no_user_fence for VCN v4.0.5 enc ring
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)
Exploit probability
0.1%
Published
July 19, 2026
Required by
Not available
Last source change
August 15, 2026
02 / AFFECTED SOFTWARE
Affected packages
03 / CONNECTIONS
Connected vulnerabilities
04 / EVIDENCE
Source records
Open Source Vulnerabilities
CVE-2026-63851
View original source
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)
05 / REFERENCES
Further evidence
- https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git
- https://git.kernel.org/stable/c/589a254bf3e88204c8402b9cbccd5e23a0af990f
- https://git.kernel.org/stable/c/6d9a98c5ed65ba92a09e4ca5a5f6941448145529
- https://git.kernel.org/stable/c/75091030f07b7957cc0646cd52e2d9d15f611483
- https://git.kernel.org/stable/c/7f23b5c420b9f68a210c29c5123bace670aa8cc9
- https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/63xxx/CVE-2026-63851.json
- https://nvd.nist.gov/vuln/detail/CVE-2026-63851