---
id: CVE-2026-68404
title: |-
  In the Linux kernel, the following vulnerability has been resolved:

  wifi: cfg80211: use wiphy work for socket owner autodisconnect

  nl80211_netlink_notify() walks the cfg80211 wireless device list when a
  NETLINK_GENERIC socket is releas…
summary: |-
  In the Linux kernel, the following vulnerability has been resolved:

  wifi: cfg80211: use wiphy work for socket owner autodisconnect

  nl80211_netlink_notify() walks the cfg80211 wireless device list when a
  NETLINK_GENERIC socket is releas…
severity: high
cvss: 7.8
cvssVector: 'CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H'
vendor: Linux
product: Linux
affected:
  - >-
    Linux >= bd2522b168847106c1885f0319a2833bdf88bf9a <
    c2ddd180bbee766cf7359473d623423ea9485d93
  - >-
    Linux >= bd2522b168847106c1885f0319a2833bdf88bf9a <
    6d6123fef5a4af175cc6b6b12a03dd0f3c240b79
  - >-
    Linux >= bd2522b168847106c1885f0319a2833bdf88bf9a <
    0c2ed186bbe14304415476d6707b747dddcd8583
  - Linux 4.11
published: '2026-08-10'
updated: '2026-10-15'
sourceUpdated: '2026-10-15T11:17:41.793'
source: NVD
sourceUrl: 'https://nvd.nist.gov/vuln/detail/CVE-2026-68404'
references:
  - url: 'https://git.kernel.org/stable/c/0c2ed186bbe14304415476d6707b747dddcd8583'
    label: 416baaa9-dc9f-4396-8d5f-8c081fb06d67
  - url: 'https://git.kernel.org/stable/c/6d6123fef5a4af175cc6b6b12a03dd0f3c240b79'
    label: 416baaa9-dc9f-4396-8d5f-8c081fb06d67
  - url: 'https://git.kernel.org/stable/c/c2ddd180bbee766cf7359473d623423ea9485d93'
    label: 416baaa9-dc9f-4396-8d5f-8c081fb06d67
tags:
  - nvd
  - cve.org
epss: 0.00154
epssPercentile: 0.04065
ingestedAt: '2026-10-15T11:00:41.689Z'
---

## Overview

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

wifi: cfg80211: use wiphy work for socket owner autodisconnect

nl80211_netlink_notify() walks the cfg80211 wireless device list when a
NETLINK_GENERIC socket is released. If the socket owns a connection, the
notifier queues the embedded wdev->disconnect_wk work item.

That work is a plain work_struct today. NETDEV_GOING_DOWN cancels it, but a
NETLINK_URELEASE notifier that already observed conn_owner_nlportid can
queue it after that cancel returns. _cfg80211_unregister_wdev() then
removes the wdev from the list and waits for RCU readers, but
synchronize_net() does not drain work queued by such a reader.

Make the autodisconnect work a wiphy_work instead. The callback already
needs the wiphy mutex, and wiphy_work runs under that mutex. This lets
teardown cancel pending autodisconnect work while holding the mutex,
without a cancel_work_sync() vs. worker locking concern.

Also cancel the wiphy work after list_del_rcu() and synchronize_net(). Any
NETLINK_URELEASE notifier that had already reached the wdev list has then
either queued the work and it is removed, or can no longer find the wdev.

## Remediation

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