SEPTEMBER 8, 2026
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Case File

CVE-2026-63840

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 in the Linux kernel affects the AMD GPU driver, specifically the JPEG ring, which improperly handles 64-bit user fence writes, leading to potential denial of service through rejected command submissions. This flaw poses a high risk as it can disrupt system stability and performance for users relying on affected AMD graphics hardware. Organizations utilizing Linux systems with AMD GPUs should prioritize patching to mitigate the risk associated with this vulnerability.

CVE
CVE-2026-63840
Severity
HIGH
CVSS
7.8
EPSS
0.12%
Linux

Original NVD Description

In the Linux kernel, the following vulnerability has been resolved: drm/amdgpu/jpeg: set no_user_fence for JPEG v5.3.0 ring JPEG rings do not support 64-bit user fence writes, reject CS submissions with user fences. (cherry picked from commit 86ac011ae234c03fb872f4945913391ea1d8862e)