---
id: CVE-2026-68471
title: 'wifi: ieee80211: validate MLE common info length'
summary: |-
  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.…
severity: high
cvss: 8.8
cvssVector: 'CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H'
cvssSource: cna
vendor: Linux
product: Linux
affected:
  - >-
    Linux >= 0f48b8b88aa9ed7b65d7cb55dbc57ec914ddada1 <
    181b46e76a218e9345ed7c4cf59dfa69278e4a06
  - >-
    Linux >= 0f48b8b88aa9ed7b65d7cb55dbc57ec914ddada1 <
    22941b5c5c46e61a7053e5f32f260f2bc39da617
  - >-
    Linux >= 0f48b8b88aa9ed7b65d7cb55dbc57ec914ddada1 <
    90576bd6921a91eb038bffbb4b9467c2dc26aa1d
  - >-
    Linux >= 0f48b8b88aa9ed7b65d7cb55dbc57ec914ddada1 <
    2b1589fd9a076727a73bfb39e96622a76415ad32
  - >-
    Linux >= 0f48b8b88aa9ed7b65d7cb55dbc57ec914ddada1 <
    293baeae9b2434a3e432629d7720b5603db2d77e
  - Linux 6.0
published: '2026-08-15'
updated: '2026-10-21'
sourceUpdated: '2026-10-21T12:44:16.504Z'
source: CVEORG
sourceUrl: 'https://www.cve.org/CVERecord?id=CVE-2026-68471'
references:
  - url: 'https://git.kernel.org/stable/c/181b46e76a218e9345ed7c4cf59dfa69278e4a06'
  - url: 'https://git.kernel.org/stable/c/22941b5c5c46e61a7053e5f32f260f2bc39da617'
  - url: 'https://git.kernel.org/stable/c/90576bd6921a91eb038bffbb4b9467c2dc26aa1d'
  - url: 'https://git.kernel.org/stable/c/2b1589fd9a076727a73bfb39e96622a76415ad32'
  - url: 'https://git.kernel.org/stable/c/293baeae9b2434a3e432629d7720b5603db2d77e'
tags:
  - cve.org
epss: 0.00314
epssPercentile: 0.22884
ingestedAt: '2026-10-21T12:48:53.596Z'
---

## Overview

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]

## Affected

- `Linux >= 0f48b8b88aa9ed7b65d7cb55dbc57ec914ddada1 < 181b46e76a218e9345ed7c4cf59dfa69278e4a06`
- `Linux >= 0f48b8b88aa9ed7b65d7cb55dbc57ec914ddada1 < 22941b5c5c46e61a7053e5f32f260f2bc39da617`
- `Linux >= 0f48b8b88aa9ed7b65d7cb55dbc57ec914ddada1 < 90576bd6921a91eb038bffbb4b9467c2dc26aa1d`
- `Linux >= 0f48b8b88aa9ed7b65d7cb55dbc57ec914ddada1 < 2b1589fd9a076727a73bfb39e96622a76415ad32`
- `Linux >= 0f48b8b88aa9ed7b65d7cb55dbc57ec914ddada1 < 293baeae9b2434a3e432629d7720b5603db2d77e`
- `Linux 6.0`

## Remediation

Refer to the linked advisories for vendor-supplied fixes and affected version ranges.