Microsoft Security Response Center guidance
Vendor revision: Oct 24, 2026Release Notes
Vulnerability intelligence
CVE-2026-98891. It is not in the current CISA KEV record we collected. That does not prove exploitation has not occurred.
Release Notes
In the Linux kernel, the following vulnerability has been resolved:
wifi: mac80211: validate deauth frame length before reason access
ieee80211_rx_mgmt_deauth() reads the deauth reason code before checking that the fixed field is actually present in the received frame.
Validate the deauth frame length first and only then read the reason code.
Source: NVD