Linux Kernel Vulnerability in mac80211 Wi-Fi Driver

CVE-2026-98334

What is CVE-2026-98334?

In the Linux kernel, a vulnerability exists within the mac80211 driver that can lead to persistent errors when starting an access point (AP). When the ieee80211_start_ap() function fails after setting parameters like enable_beacon and beacon_int, these settings can remain active indefinitely. This results in scanning processes attempting to restore beaconing on the interface, which in turn may trigger divide errors and warnings that compromise system stability. To address this issue, it is crucial to ensure that the state is reset properly upon failures to maintain correct system function.

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