{"id":"CVE-2026-68404","title":"In the Linux kernel, the following vulnerability has been resolved:\n\nwifi: cfg80211: use wiphy work for socket owner autodisconnect\n\nnl80211_netlink_notify() walks the cfg80211 wireless device list when a\nNETLINK_GENERIC socket is releas…","summary":"In the Linux kernel, the following vulnerability has been resolved:\n\nwifi: cfg80211: use wiphy work for socket owner autodisconnect\n\nnl80211_netlink_notify() walks the cfg80211 wireless device list when a\nNETLINK_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","slug":"CVE-2026-68404","body":"## Overview\n\nIn the Linux kernel, the following vulnerability has been resolved:\n\nwifi: cfg80211: use wiphy work for socket owner autodisconnect\n\nnl80211_netlink_notify() walks the cfg80211 wireless device list when a\nNETLINK_GENERIC socket is released. If the socket owns a connection, the\nnotifier queues the embedded wdev->disconnect_wk work item.\n\nThat work is a plain work_struct today. NETDEV_GOING_DOWN cancels it, but a\nNETLINK_URELEASE notifier that already observed conn_owner_nlportid can\nqueue it after that cancel returns. _cfg80211_unregister_wdev() then\nremoves the wdev from the list and waits for RCU readers, but\nsynchronize_net() does not drain work queued by such a reader.\n\nMake the autodisconnect work a wiphy_work instead. The callback already\nneeds the wiphy mutex, and wiphy_work runs under that mutex. This lets\nteardown cancel pending autodisconnect work while holding the mutex,\nwithout a cancel_work_sync() vs. worker locking concern.\n\nAlso cancel the wiphy work after list_del_rcu() and synchronize_net(). Any\nNETLINK_URELEASE notifier that had already reached the wdev list has then\neither queued the work and it is removed, or can no longer find the wdev.\n\n## Remediation\n\nRefer to the linked advisories for vendor-supplied fixes and affected version ranges.","depth":"twilight","depthScore":43,"depthScoreParts":{"impact":42.9,"likelihood":0,"exploitation":0,"ransomware":0},"changes":[]}