Unrated severityNVD Advisory· Published Oct 23, 2026
CVE-2026-98891
CVE-2026-98891
Description
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.
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Affected products
2Patches
Vulnerability mechanics
References
7- git.kernel.org/stable/c/4a360c6e18dfa9d70006c7247a6a8cc8dfe0d60fnvd
- git.kernel.org/stable/c/51092dc769f021e9634474e1bd5a561da477fbdbnvd
- git.kernel.org/stable/c/7a5ef1fd654d0e90d59aa32c881789c8bcc4125anvd
- git.kernel.org/stable/c/80d1a110e9096b5bf41497f6b151154084862385nvd
- git.kernel.org/stable/c/9df64ad43e1f2c036667bba2bf385e9d7b3af564nvd
- git.kernel.org/stable/c/a6ed4c00ccdc15011a73daa2b38af9fc5a2c543envd
- git.kernel.org/stable/c/a78689e2beed200d4590318612c74ae25c9408cfnvd
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