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Linux Kernel Gfx11 MQD Manager Callback NULL Dereference Vulnerability

Vulnerability

A vulnerability in the Linux kernel's graphics processing unit (GPU) driver for Advanced Micro Devices (AMD) has been addressed. The issue involved a NULL pointer dereference in the debug filesystem (debugfs) related to the Graphics 11 (gfx11) Microqueue Descriptor (MQD) management. The problem arose because the MQD manager callbacks for gfx11 were not properly assigned, leading to the NULL dereference. This vulnerability affects several versions of the Linux kernel.

Impact

The vulnerability could lead to a NULL pointer dereference, causing a crash or instability in the system.

Added: Dec 30, 2025, 2:53 PM
Updated: Dec 30, 2025, 2:53 PM

Vulnerability Rating

Custom Algorithm
spread
9.0
impact
2.5
exploitability
4.0
remediation
7.7
relevance
1.6
threat
3.2
urgency
2.9
incentive
1.7

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