Linux Kernel Unbalanced Lock Vulnerability in DRM GPU SVM

Vulnerability

A vulnerability has been identified in the Linux kernel's Direct Rendering Manager (DRM) GPU Shared Virtual Memory (SVM) handling. This issue involves an unbalanced lock and unlock sequence for the GPU SVM notifier lock, which can lead to potential synchronization problems. The vulnerability was introduced in version 6.19.0-rc6 and has been fixed in the stable branch.

Impact

Exploitation of this vulnerability can cause a warning about a bad unlock balance, indicating potential issues with lock management in the GPU SVM notifier.

Remediation

Users can upgrade to the latest stable version of the Linux kernel to address this vulnerability.

Added: Jul 19, 2026, 3:30 PM
Updated: Jul 19, 2026, 3:30 PM

Vulnerability Rating

Custom Algorithm
spread
9.0
impact
3.1
exploitability
4.0
remediation
0.0
relevance
9.7
threat
3.2
urgency
2.9
incentive
0.0

Our algorithm analyzes dozens of metrics to generate these 8 key vulnerability categories, which are then combined to calculate the overall risk score.