mac80211 Interface Management Issue in Linux Kernel Affects Wi-Fi Functionality

CVE-2026-98331

What is CVE-2026-98331?

In the Linux kernel, a significant issue arises within the mac80211 module, leading to improper management of virtual interfaces (vifs). This occurs when a netdev is unregistered without going through the expected removal process, potentially causing the mac80211 module to retain references to non-existent network interfaces. This situation can escalate to serious errors during the deregistration of wireless devices, as the system attempts to interact with interfaces that have already been removed. The resolution involves ensuring that interfaces are appropriately removed from the tracking list during the uninitialization process, preventing further complications and improving overall stability.

References