wifi: cfg80211: use wiphy work for socket owner autodisconnect
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.
CVE-2026-68404
Primary source · Revision 1
Imported from structured advisory data. Source references identify upstream records or fields; verify affected versions and your deployed configuration.
Security context
Source reference: cve:CVE-2026-68404
Linux
Source reference: /containers/cna/affected/0/product
- Affected versions
- Not stated in this record
- Fixed versions
- Not stated in this record
- Prerequisites
- Not stated in this record
Linux
Source reference: /containers/cna/affected/1/product
- Affected versions
- Not stated in this record
- Fixed versions
- Not stated in this record
- Prerequisites
- Not stated in this record
Structured affected-version data
Original package identities and version rules from this source.
[
{
"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
"vendor": "Linux",
"product": "Linux",
"versions": [
{
"status": "affected",
"version": "bd2522b168847106c1885f0319a2833bdf88bf9a",
"lessThan": "c55590e4c69e0fd194df6d20bc35381c201d99e1",
"versionType": "git"
},
{
"status": "affected",
"version": "bd2522b168847106c1885f0319a2833bdf88bf9a",
"lessThan": "4087a9ba4ece70297a4174afaa41c0b700302b65",
"versionType": "git"
},
{
"status": "affected",
"version": "bd2522b168847106c1885f0319a2833bdf88bf9a",
"lessThan": "c2ddd180bbee766cf7359473d623423ea9485d93",
"versionType": "git"
},
{
"status": "affected",
"version": "bd2522b168847106c1885f0319a2833bdf88bf9a",
"lessThan": "6d6123fef5a4af175cc6b6b12a03dd0f3c240b79",
"versionType": "git"
},
{
"status": "affected",
"version": "bd2522b168847106c1885f0319a2833bdf88bf9a",
"lessThan": "0c2ed186bbe14304415476d6707b747dddcd8583",
"versionType": "git"
}
],
"programFiles": [
"include/net/cfg80211.h",
"net/wireless/core.c",
"net/wireless/core.h",
"net/wireless/nl80211.c",
"net/wireless/sme.c"
],
"defaultStatus": "unaffected"
},
{
"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
"vendor": "Linux",
"product": "Linux",
"versions": [
{
"status": "affected",
"version": "4.11"
},
{
"status": "unaffected",
"version": "0",
"lessThan": "4.11",
"versionType": "semver"
},
{
"status": "unaffected",
"version": "6.6.160",
"versionType": "semver",
"lessThanOrEqual": "6.6.*"
},
{
"status": "unaffected",
"version": "6.12.114",
"versionType": "semver",
"lessThanOrEqual": "6.12.*"
},
{
"status": "unaffected",
"version": "6.18.57",
"versionType": "semver",
"lessThanOrEqual": "6.18.*"
},
{
"status": "unaffected",
"version": "7.1.6",
"versionType": "semver",
"lessThanOrEqual": "7.1.*"
},
{
"status": "unaffected",
"version": "7.2",
"versionType": "original_commit_for_fix",
"lessThanOrEqual": "*"
}
],
"programFiles": [
"include/net/cfg80211.h",
"net/wireless/core.c",
"net/wireless/core.h",
"net/wireless/nl80211.c",
"net/wireless/sme.c"
],
"defaultStatus": "affected"
}
]- Related CVEs
- CVE-2026-68404
Source reference:
/cveMetadata/cveId
Publisher severity
high
Source reference: /containers/cna/metrics
- Event
- #46472 · Revision 1
- Added to Heist Feed
- Publisher date