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NVD / CVE Program· CNA Linux

CVE-2026-68404: wifi: cfg80211: use wiphy work for socket owner autodisconnect

Noroxi assessment

Priority: Monitor (action score 31/100)

  • The sources we track (CISA KEV, Exploit-DB, Metasploit, Nuclei, GitHub) show no public exploit code or exploitation in the wild.
  • Probability of exploitation in the next 30 days: 0.16% (FIRST EPSS).
  • Someone with local access to the system can trigger it. A low-privileged account is enough. No user action is required. No special conditions are required; it is repeatable.
  • Fixed version: Linux Linux 0c2ed186bbe14304415476d6707b747dddcd8583, 23517673b1eecaec95e61dde285220d5a980cf3f, 4087a9ba4ece70297a4174afaa41c0b700302b65; azl3 kernel 6.6.157.1-1 on Azure Linux 3.0 Release Notes.
  • Mentioned 1 time in Turkish national cyber security advisories (siberguvenlik.gov.tr).

Low priority for now. Upgrade to Linux Linux 0c2ed186bbe14304415476d6707b747dddcd8583, 23517673b1eecaec95e61dde285220d5a980cf3f, 4087a9ba4ece70297a4174afaa41c0b700302b65; azl3 kernel 6.6.157.1-1 on Azure Linux 3.0 Release Notes or later.

Generated automatically from the record's data: CVSS (NVD and CNA), CISA KEV and SSVC, FIRST EPSS, exploit sources, fixed versions. How we calculate it

Primary sources: NVD · CVE.org · FIRST EPSS

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.

HighCVSS 7.8 · v3.1—No exploit Fix available
Published
Aug 10, 2026
Updated
Oct 30, 2026
EPSS
0.1% · 6th percentile

Report tools

JSON

Action score

31

Monitor

Low priority for now.

CVSS
31 / 40 · 7.8 / 10
CISA KEV
0 / 30 · Not listed
EPSS
0 / 30 · 0.1%

CISA SSVC decision

Exploitation
none
Automatable
no
Technical impact
total

Vulnrichment: CISA's decision-tree inputs.

CNA vs NVD score

NVD
—
CNA · Linux
7.8
NVD has not scored this yet; the score shown is the CNA’s.

The score given by the assigning authority versus NVD’s independent score. A gap means the severity is contested.

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  • No public exploit code on record
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Noroxi analysis

What does it mean in your environment?

The assessment above is generated automatically from the record's data; it doesn't know your environment. Our team verifies on your systems whether this vulnerability is actually exploitable and which mitigation is enough.

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Affected systems

Is your version affected?

Pick the product and type the version you run. It's compared with this record's version ranges in your browser; the version isn't sent anywhere.

—

Versions reported by the vendor

Affected version ranges reported by the assigning authority (Linux). Independent of NVD's CPE analysis and usually ahead of it.

  • Linux Linux

    • 4.11affected
    • bd2522b168847106c1885f0319a2833bdf88bf9a and later · before 23517673b1eecaec95e61dde285220d5a980cf3faffected · git
    • bd2522b168847106c1885f0319a2833bdf88bf9a and later · before c55590e4c69e0fd194df6d20bc35381c201d99e1affected · git
    • bd2522b168847106c1885f0319a2833bdf88bf9a and later · before 4087a9ba4ece70297a4174afaa41c0b700302b65affected · git
    • bd2522b168847106c1885f0319a2833bdf88bf9a and later · before c2ddd180bbee766cf7359473d623423ea9485d93affected · git
    • bd2522b168847106c1885f0319a2833bdf88bf9a and later · before 6d6123fef5a4af175cc6b6b12a03dd0f3c240b79affected · git
    • bd2522b168847106c1885f0319a2833bdf88bf9a and later · before 0c2ed186bbe14304415476d6707b747dddcd8583affected · git
    • before 4.11not affected · semver
    • 6.1.191 and later · up to and including 6.1.*not affected · semver
    • 6.6.160 and later · up to and including 6.6.*not affected · semver

Package-level exposure

OSV and GitHub Advisory data: ecosystem, package and range. SBOM matching uses this table.

EcosystemPackageAffected rangeFix
AlmaLinux:9kernelbefore 5.14.0-687.58.1.el9_85.14.0-687.58.1.el9_8
AlmaLinux:9kernel-64kbefore 5.14.0-687.58.1.el9_85.14.0-687.58.1.el9_8
AlmaLinux:9kernel-64k-corebefore 5.14.0-687.58.1.el9_85.14.0-687.58.1.el9_8
AlmaLinux:9kernel-64k-debugbefore 5.14.0-687.58.1.el9_85.14.0-687.58.1.el9_8
AlmaLinux:9kernel-64k-debug-corebefore 5.14.0-687.58.1.el9_85.14.0-687.58.1.el9_8
AlmaLinux:9kernel-64k-debug-develbefore 5.14.0-687.58.1.el9_85.14.0-687.58.1.el9_8
AlmaLinux:9kernel-64k-debug-devel-matchedbefore 5.14.0-687.58.1.el9_85.14.0-687.58.1.el9_8
AlmaLinux:9kernel-64k-debug-modulesbefore 5.14.0-687.58.1.el9_85.14.0-687.58.1.el9_8
AlmaLinux:9kernel-64k-debug-modules-corebefore 5.14.0-687.58.1.el9_85.14.0-687.58.1.el9_8
AlmaLinux:9kernel-64k-debug-modules-extrabefore 5.14.0-687.58.1.el9_85.14.0-687.58.1.el9_8
AlmaLinux:9kernel-64k-develbefore 5.14.0-687.58.1.el9_85.14.0-687.58.1.el9_8
AlmaLinux:9kernel-64k-devel-matchedbefore 5.14.0-687.58.1.el9_85.14.0-687.58.1.el9_8
AlmaLinux:9kernel-64k-modulesbefore 5.14.0-687.58.1.el9_85.14.0-687.58.1.el9_8
AlmaLinux:9kernel-64k-modules-corebefore 5.14.0-687.58.1.el9_85.14.0-687.58.1.el9_8
AlmaLinux:9kernel-64k-modules-extrabefore 5.14.0-687.58.1.el9_85.14.0-687.58.1.el9_8
AlmaLinux:9kernel-abi-stablelistsbefore 5.14.0-687.58.1.el9_85.14.0-687.58.1.el9_8
AlmaLinux:9kernel-corebefore 5.14.0-687.58.1.el9_85.14.0-687.58.1.el9_8
AlmaLinux:9kernel-cross-headersbefore 5.14.0-687.58.1.el9_85.14.0-687.58.1.el9_8
AlmaLinux:9kernel-debugbefore 5.14.0-687.58.1.el9_85.14.0-687.58.1.el9_8
AlmaLinux:9kernel-debug-corebefore 5.14.0-687.58.1.el9_85.14.0-687.58.1.el9_8
AlmaLinux:9kernel-debug-develbefore 5.14.0-687.58.1.el9_85.14.0-687.58.1.el9_8
AlmaLinux:9kernel-debug-devel-matchedbefore 5.14.0-687.58.1.el9_85.14.0-687.58.1.el9_8
AlmaLinux:9kernel-debug-modulesbefore 5.14.0-687.58.1.el9_85.14.0-687.58.1.el9_8
AlmaLinux:9kernel-debug-modules-corebefore 5.14.0-687.58.1.el9_85.14.0-687.58.1.el9_8

+96

Same product

linux: all records

Other highest-scoring records for the same primary product.

  • CVE-2026-74705udp: fix potential use-after-free in tunnel segmentation
    40Plan
  • CVE-2026-74612veth: fix skb length accounting after XDP frag adjustment
    40Plan
  • CVE-2026-74475vxlan: use neigh_ha_snapshot() in route_shortcircuit()
    40Plan

Published before and after this one in the same product

  • ← EarlierCVE-2026-68401Aug 10, 2026 · firmware: arm_ffa: Fix out-of-bound writes in ffa_setup_and_transmit()
    31Monitor
  • ← EarlierCVE-2026-68402Aug 10, 2026 · wifi: cfg80211: bound element ID read when checking non-inheritance
    28Monitor
  • Later →CVE-2026-68408Aug 10, 2026 · wifi: cfg80211: convert pmsr_free_wk to wiphy_work to fix deadlock
    0Monitor

Remediation

Which version to upgrade to

Fix versions compiled from the vendor, package registries and Microsoft. Verify the vendor's note before upgrading.

Product / packageFixed versionSource
Linux Linux0c2ed186bbe14304415476d6707b747dddcd8583Vendor (CNA)
Linux Linux23517673b1eecaec95e61dde285220d5a980cf3fVendor (CNA)
Linux Linux4087a9ba4ece70297a4174afaa41c0b700302b65Vendor (CNA)
Linux Linux6d6123fef5a4af175cc6b6b12a03dd0f3c240b79Vendor (CNA)
Linux Linuxc2ddd180bbee766cf7359473d623423ea9485d93Vendor (CNA)
Linux Linuxc55590e4c69e0fd194df6d20bc35381c201d99e1Vendor (CNA)
azl3 kernel 6.6.152.1-1 on Azure Linux 3.0—Microsoft (MSRC)
azl3 kernel 6.6.157.1-1 on Azure Linux 3.0Release NotesMicrosoft (MSRC)
almalinux:kernel5.14.0-687.58.1.el9_8 · AlmaLinux:9Package registry (OSV)
almalinux:kernel-64k5.14.0-687.58.1.el9_8 · AlmaLinux:9Package registry (OSV)
almalinux:kernel-64k-core5.14.0-687.58.1.el9_8 · AlmaLinux:9Package registry (OSV)
almalinux:kernel-64k-debug5.14.0-687.58.1.el9_8 · AlmaLinux:9Package registry (OSV)
almalinux:kernel-64k-debug-core5.14.0-687.58.1.el9_8 · AlmaLinux:9Package registry (OSV)
almalinux:kernel-64k-debug-devel5.14.0-687.58.1.el9_8 · AlmaLinux:9Package registry (OSV)
almalinux:kernel-64k-debug-devel-matched5.14.0-687.58.1.el9_8 · AlmaLinux:9Package registry (OSV)
almalinux:kernel-64k-debug-modules5.14.0-687.58.1.el9_8 · AlmaLinux:9Package registry (OSV)
almalinux:kernel-64k-debug-modules-core5.14.0-687.58.1.el9_8 · AlmaLinux:9Package registry (OSV)
almalinux:kernel-64k-debug-modules-extra5.14.0-687.58.1.el9_8 · AlmaLinux:9Package registry (OSV)
almalinux:kernel-64k-devel5.14.0-687.58.1.el9_8 · AlmaLinux:9Package registry (OSV)
almalinux:kernel-64k-devel-matched5.14.0-687.58.1.el9_8 · AlmaLinux:9Package registry (OSV)
debian:linux7.1.6-1 · Debian:14Package registry (OSV)
red hat:kernel-64k-debug-debuginfo0:5.14.0-687.58.1.el9_8 · Red Hat:enterprise_linux:9::appstreamPackage registry (OSV)
red hat:kernel-64k-debug-devel0:5.14.0-687.58.1.el9_8 · Red Hat:enterprise_linux:9::appstreamPackage registry (OSV)
red hat:kernel-64k-debug-devel-matched0:5.14.0-687.58.1.el9_8 · Red Hat:enterprise_linux:9::appstreamPackage registry (OSV)
red hat:kernel-64k-debuginfo0:5.14.0-687.58.1.el9_8 · Red Hat:enterprise_linux:9::appstreamPackage registry (OSV)
red hat:kernel-64k-devel0:5.14.0-687.58.1.el9_8 · Red Hat:enterprise_linux:9::appstreamPackage registry (OSV)
red hat:kernel-64k-devel-matched0:5.14.0-687.58.1.el9_8 · Red Hat:enterprise_linux:9::appstreamPackage registry (OSV)
red hat:kernel-debug-debuginfo0:5.14.0-687.58.1.el9_8 · Red Hat:enterprise_linux:9::appstreamPackage registry (OSV)
red hat:kernel-debug-devel0:5.14.0-687.58.1.el9_8 · Red Hat:enterprise_linux:9::appstreamPackage registry (OSV)
red hat:kernel-debug-devel-matched0:5.14.0-687.58.1.el9_8 · Red Hat:enterprise_linux:9::appstreamPackage registry (OSV)

+4

Exploit status

No known public exploit

No public exploit has been observed yet. That doesn't mean you're safe, only that the bar is a little higher.

Research context

For pentesters and researchers: attack profile, score disagreement, timeline, patch commits, credits, variant and chain candidates, bug bounty scope. All derived from existing data; no exploit code.

Timeline

From publication to today: proof of concept, Metasploit module, CISA KEV and fix record. Dates are as reported by the sources.

No dated events beyond publication.

EPSS, last 120 days

FIRST EPSS daily score; only changes of 0.01 or more are recorded (step chart).

Patch and commit links

Commit, PR and diff links among the references. A starting point for patch-diffing and variant hunting; fixes, not exploits.

No commit or PR link among the references.

Credits

All researchers

Finders, reporters and analysts named in the CNA record. Click a name for that researcher’s other records.

No credits in the CNA record.

Variant candidates

Same product, same weakness class, within 18 months. If the patch missed the root cause, the sibling bug is here.

  • CVE-2025-68775209 days apartnet/handshake: duplicate handshake cancellations leak socket
    39Monitor
  • CVE-2026-681490 days apartfs: preserve ACL_DONT_CACHE state in forget_cached_acl()
    33Monitor
  • CVE-2026-720575 days apartnet/sched: act_ct: preserve tc_skb_cb across defragmentation
    32Monitor
  • CVE-2026-6455612 days apartperf/core: Detach event groups during remove_on_exec
    31Monitor
  • CVE-2026-681030 days apartdrm/amdgpu: reject mapping a reserved doorbell to a new queue
    28Monitor

Chain candidates

An authentication bypass and a privilege-requiring bug in the same product, published close together: combined they may become an unauthenticated path.

—

Bug bounty scope

No known public program.

Source: bounty-targets-data (public HackerOne, Bugcrowd, Intigriti, YesWeHack listings).

National notice (Türkiye Cybersecurity Directorate / USOM)

Official security notices citing this record; remediation advice is on the agency's page.

All national notices →

Technical details

Attack conditions

  • Someone with local access to the system can trigger it.
  • A low-privileged account is enough.
  • No user action is required.
  • No special conditions are required; it is repeatable.

If successful

Confidentiality
high · data can be read
Integrity
high · data or configuration can be modified
Availability
high · the service can be disrupted
Attack vector
Local
Attack complexity
Low
Privileges required
Low
User interaction
None
Scope
Unchanged
Confidentiality impact
High
Integrity impact
High
Availability impact
High

Weakness class (CWE)

CWE-662 · Improper Synchronization

CVSS vector

CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

nvd-secondary

Attack context

MITRE CAPEC attack patterns and ATT&CK techniques for this weakness class (CWE). A starting point for detection rules and threat hunting.

Change log

  1. SSVC exploitation— → none
  2. Fix✗ → ✓

For records you follow, these changes also arrive as notifications. →

References

Show all references (5 more)

Vendor advisories and official records. Exploit/PoC links are deliberately left out.

All records