SEPTEMBER 8, 2026
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Case File

CVE-2026-63852

HIGH · CVSS 7.8 EPSS 0.12%

Source: NVD + CISA KEV + EPSS · Published 2026-07-19 · Last synced 2026-08-18

CyberRota Analysis

AI-Generated

The vulnerability affects the Linux kernel's VCN encoder and decoder rings, which improperly handle 64-bit user fence writes, leading to potential denial of service through rejected command submissions. This flaw poses a high risk to systems utilizing AMD GPU hardware for video encoding and decoding. Organizations relying on Linux systems with AMD GPUs should prioritize patching to mitigate the risk of service disruption.

CVE
CVE-2026-63852
Severity
HIGH
CVSS
7.8
EPSS
0.12%
Linux

Original NVD Description

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)