---
id: CVE-2026-80722
title: 'wifi: mac80211: validate individual TWT params before driver setup'
summary: |-
  In the Linux kernel, the following vulnerability has been resolved:

  wifi: mac80211: validate individual TWT params before driver setup

  ieee80211_process_rx_twt_action() only partially validates a received
  S1G TWT setup frame before que…
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 >= f5a4c24e689f54e66201f04d343bdd2e8a1d7923 <
    92fcd0f30dc8e51f252589b082d46851d295cc1a
  - >-
    Linux >= f5a4c24e689f54e66201f04d343bdd2e8a1d7923 <
    09d60d1f72e6598241490eb6c4e97245af895c09
  - >-
    Linux >= f5a4c24e689f54e66201f04d343bdd2e8a1d7923 <
    ff558072d199c1d641d1561da622e67f780514de
  - >-
    Linux >= f5a4c24e689f54e66201f04d343bdd2e8a1d7923 <
    ade9e2f0f7f4d3089600ac2af8ef0b91746f923b
  - >-
    Linux >= f5a4c24e689f54e66201f04d343bdd2e8a1d7923 <
    b558e07708d886acfcf4b0391ed7a8546e81d326
  - >-
    Linux >= f5a4c24e689f54e66201f04d343bdd2e8a1d7923 <
    47fb04c3826e1f90271d405523043d6708b9072a
  - >-
    Linux >= f5a4c24e689f54e66201f04d343bdd2e8a1d7923 <
    0502d5077e419427d80f4d46ba95d0067f5fb916
  - Linux 5.15
ssvc:
  exploitation: none
  automatable: 'no'
  technicalImpact: total
  timestamp: '2026-10-16T19:20:57.406511Z'
published: '2026-08-28'
updated: '2026-10-16'
sourceUpdated: '2026-10-16T19:26:35.418Z'
source: CVEORG
sourceUrl: 'https://www.cve.org/CVERecord?id=CVE-2026-80722'
references:
  - url: 'https://git.kernel.org/stable/c/92fcd0f30dc8e51f252589b082d46851d295cc1a'
  - url: 'https://git.kernel.org/stable/c/09d60d1f72e6598241490eb6c4e97245af895c09'
  - url: 'https://git.kernel.org/stable/c/ff558072d199c1d641d1561da622e67f780514de'
  - url: 'https://git.kernel.org/stable/c/ade9e2f0f7f4d3089600ac2af8ef0b91746f923b'
  - url: 'https://git.kernel.org/stable/c/b558e07708d886acfcf4b0391ed7a8546e81d326'
  - url: 'https://git.kernel.org/stable/c/47fb04c3826e1f90271d405523043d6708b9072a'
  - url: 'https://git.kernel.org/stable/c/0502d5077e419427d80f4d46ba95d0067f5fb916'
tags:
  - cve.org
epss: 0.00239
epssPercentile: 0.13898
ingestedAt: '2026-10-16T19:46:24.302Z'
---

## Overview

In the Linux kernel, the following vulnerability has been resolved:

wifi: mac80211: validate individual TWT params before driver setup

ieee80211_process_rx_twt_action() only partially validates a received
S1G TWT setup frame before queueing it.

An individual agreement can therefore reach ieee80211_s1g_rx_twt_setup()
with twt->length too short for the full struct ieee80211_twt_params.

The individual path passes twt to drv_add_twt_setup(). Both the tracepoint
and the driver callback consume the complete parameters block, not merely
req_type. Do not pass a short individual agreement to the driver.
Broadcast agreements remain unchanged because they are rejected locally
after accessing only req_type.

[edit commit message to not overclaim lack of validation nor
 understate driver impact]

## Affected

- `Linux >= f5a4c24e689f54e66201f04d343bdd2e8a1d7923 < 92fcd0f30dc8e51f252589b082d46851d295cc1a`
- `Linux >= f5a4c24e689f54e66201f04d343bdd2e8a1d7923 < 09d60d1f72e6598241490eb6c4e97245af895c09`
- `Linux >= f5a4c24e689f54e66201f04d343bdd2e8a1d7923 < ff558072d199c1d641d1561da622e67f780514de`
- `Linux >= f5a4c24e689f54e66201f04d343bdd2e8a1d7923 < ade9e2f0f7f4d3089600ac2af8ef0b91746f923b`
- `Linux >= f5a4c24e689f54e66201f04d343bdd2e8a1d7923 < b558e07708d886acfcf4b0391ed7a8546e81d326`
- `Linux >= f5a4c24e689f54e66201f04d343bdd2e8a1d7923 < 47fb04c3826e1f90271d405523043d6708b9072a`
- `Linux >= f5a4c24e689f54e66201f04d343bdd2e8a1d7923 < 0502d5077e419427d80f4d46ba95d0067f5fb916`
- `Linux 5.15`

## Remediation

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