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Linux Kernel Null Pointer Dereference Vulnerability in mt7996_mmio_wed_init()

Vulnerability

A null pointer dereference vulnerability has been identified in the Linux kernel's mt76 wifi driver, specifically within the mt7996 module. The issue arises in the mt7996_mmio_wed_init() function, which fails to properly check the return value of the devm_ioremap() function. This oversight allows for a null pointer dereference when devm_ioremap() returns NULL on error, leading to potential instability or crashes.

Impact

Exploitation of this vulnerability causes a null pointer dereference, which can lead to a system crash or instability.

Added: Jul 3, 2025, 9:50 AM
Updated: Jul 3, 2025, 9:50 AM

Vulnerability Rating

Custom Algorithm
spread
9.0
impact
2.5
exploitability
4.0
remediation
0.0
relevance
0.2
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.