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Linux Kernel mac80211_hwsim NAN Notification Frequency Typo Vulnerability

Vulnerability

A vulnerability in the Linux kernel's mac80211_hwsim module has been fixed, addressing a typo in the frequency notification for the Neighbor Awareness Networking (NAN) protocol. The notification incorrectly referenced 5475 MHz, which is not a valid channel, instead of the correct frequency of 5745 MHz, corresponding to channel 149. This error could lead to a NULL pointer dereference in the cfg80211_next_nan_dw_notif function.

Impact

The vulnerability could cause a NULL pointer dereference, potentially leading to a crash or undefined behavior in the application.

Added: Feb 4, 2026, 4:27 PM
Updated: Feb 4, 2026, 4:43 PM

Vulnerability Rating

Custom Algorithm
spread
9.0
impact
2.5
exploitability
3.5
remediation
7.7
relevance
2.6
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.