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Linux Kernel IOMMU/VT-D NULL Pointer Dereference Vulnerability

Vulnerability

A vulnerability in the Linux kernel's IOMMU/VT-d implementation could lead to a NULL pointer dereference. This issue arises when the 'domain_remove_dev_pasid' function fails to locate the 'pasid', triggering a WARN_ON_ONCE alert. To prevent potential exploitation, the code has been modified to avoid using a NULL pointer in this scenario.

Impact

Exploitation of this vulnerability could lead to a NULL pointer dereference, causing a kernel crash or other undefined behavior.

Added: Jun 9, 2025, 7:46 PM
Updated: Jun 9, 2025, 7:46 PM

Vulnerability Rating

Custom Algorithm
spread
9.0
impact
2.5
exploitability
4.0
remediation
0.0
relevance
0.0
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.