CVE-2026-63852
High
drm/amdgpu/vcn: set no_user_fence for VCN v4.0.3 enc ring
In the Linux kernel, the following vulnerability has been resolved: drm/amdgpu/vcn: set no_user_fence for VCN v4.0.3 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 ff1a5a125c5a70c328806b9bc01d7d942cf3f9aa)
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-2026-63852
View original source
In the Linux kernel, the following vulnerability has been resolved: drm/amdgpu/vcn: set no_user_fence for VCN v4.0.3 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 ff1a5a125c5a70c328806b9bc01d7d942cf3f9aa)
05 / REFERENCES
Further evidence
- https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git
- https://git.kernel.org/stable/c/0177ac6141c8857130cf365369c74dee7b6b1f7f
- https://git.kernel.org/stable/c/387b7c7667bd5c53549350ddad866d2fcf75a529
- https://git.kernel.org/stable/c/4532b52b34e4e4310386e6fdf6a643368599f522
- https://git.kernel.org/stable/c/9076a83e5adefd10dc5c967c7b8bde601c4c512a
- https://git.kernel.org/stable/c/c12a5d35033c0640c57c10d7111c010c7b9c2c8e
- https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/63xxx/CVE-2026-63852.json
- https://nvd.nist.gov/vuln/detail/CVE-2026-63852