wifi: ieee80211: validate MLE common info length
CVE-2026-68471 · published 15 Aug 2026
How serious is it
- Severity: high, CVSS score 8.8 out of 10.
- No exploit prediction (EPSS) score yet.
- Not on the CISA list of exploited vulnerabilities.
- No public exploit in Exploit-DB.
Is your app affected by CVE-2026-68471?
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Who is affected
- Linux Linux: 0f48b8b88aa9ed7b65d7cb55dbc57ec914ddada1 to < 181b46e76a218e9345ed7c4cf59dfa69278e4a06, 0f48b8b88aa9ed7b65d7cb55dbc57ec914ddada1 to < 22941b5c5c46e61a7053e5f32f260f2bc39da617, 0f48b8b88aa9ed7b65d7cb55dbc57ec914ddada1 to < 90576bd6921a91eb038bffbb4b9467c2dc26aa1d, 0f48b8b88aa9ed7b65d7cb55dbc57ec914ddada1 to < 2b1589fd9a076727a73bfb39e96622a76415ad32
- Linux Linux: 6.0
How to check
- Find out whether you run the affected product and which version, then compare it with the versions above.
How to fix
Copies a prompt for Claude Code, Cursor or Codex that asks it to check whether you run this product.
- Apply the vendor's update or mitigation from the references below. If there is none yet, limit exposure of the affected service until there is.
- If a vulnerable version was live, check your logs and rotate the secrets that server could read.
The advisory
In the Linux kernel, the following vulnerability has been resolved:
wifi: ieee80211: validate MLE common info length
ieee80211_mle_common_size() uses the first common-info octet as the
common information length for all known MLE types. However,
ieee80211_mle_size_ok() only validates that octet for Basic, Probe
Request, and TDLS MLEs.
Reconfiguration MLEs also skipped the length octet when calculating the
minimum common size, and Priority Access MLEs skipped validation of the
advertised common information length.
Account for the Reconfiguration common-info length octet and validate
the advertised common information length for all known MLE types. Keep
unknown-type handling unchanged.
[remove now misleading comment]
Check your whole app
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References
- git.kernel.org/stable/c/181b46e76a218e9345ed7c4cf59dfa69278e4a06
- git.kernel.org/stable/c/22941b5c5c46e61a7053e5f32f260f2bc39da617
- git.kernel.org/stable/c/90576bd6921a91eb038bffbb4b9467c2dc26aa1d
- git.kernel.org/stable/c/2b1589fd9a076727a73bfb39e96622a76415ad32
- git.kernel.org/stable/c/293baeae9b2434a3e432629d7720b5603db2d77e
Merged from CVE List. Last updated 25 Oct 2026. All vulnerabilities · RSS · JSON