CVE-2026-98891

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.

EPSS

0.2% chance of exploitation in the next 30 days; higher than 7% of CVEs (scores of 2026-10-25)

Published

2026-10-23

Modified

2026-10-26

Record from

the NVD, synced 2026-10-26

References

• https://git.kernel.org/stable/c/4a360c6e18dfa9d70006c7247a6a8cc8dfe0d60f
• https://git.kernel.org/stable/c/51092dc769f021e9634474e1bd5a561da477fbdb
• https://git.kernel.org/stable/c/7a5ef1fd654d0e90d59aa32c881789c8bcc4125a
• https://git.kernel.org/stable/c/80d1a110e9096b5bf41497f6b151154084862385
• https://git.kernel.org/stable/c/9df64ad43e1f2c036667bba2bf385e9d7b3af564

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