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NVD / CVE Program· CNA Linux

CVE-2026-90343: wifi: cfg80211: stop PMSR before P2P and NAN teardown

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: 0.17% (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 6c5fc504d0d6934132637aa3db4b9b58148eaa78, 7a22cbc6c6bdd3c3811b4ce13875685c520f94de, 9374943fc5a45915e4ea8b597b6a17d3b571bcbf.

Low priority for now. Upgrade to Linux Linux 6c5fc504d0d6934132637aa3db4b9b58148eaa78, 7a22cbc6c6bdd3c3811b4ce13875685c520f94de, 9374943fc5a45915e4ea8b597b6a17d3b571bcbf 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: stop PMSR before P2P and NAN teardown PMSR request teardown must abort active measurements while the wireless_dev is still present in the driver. cfg80211_leave_locked() and cfg80211_stop_pd() already do this before invoking the driver's stop callback, but cfg80211_stop_p2p_device() and cfg80211_stop_nan() do not. Those helpers are also called directly by nl80211, rfkill shutdown, and wireless_dev unregister paths. If one of these paths stops a P2P device or NAN interface with a pending request, it removes the mac80211 subinterface from the driver first. Subsequent request cleanup cannot reach the lower driver's abort callback, but cfg80211 frees the request regardless. Driver state can then retain a stale request and use it when it later reports a result. Call cfg80211_pmsr_wdev_down() before stopping the P2P device or NAN interface. This keeps lower-driver request state and cfg80211 request ownership in sync for all of the helpers' callers.

HighCVSS 7.8 · v3.1—No exploit Fix available
Published
Sep 17, 2026
Updated
Oct 30, 2026
EPSS
0.1% · 6th percentile
CWE
—

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%

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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  • Not in KEV: no record of exploitation in the wild
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  • A fix has been released

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  • when EPSS rises 20 points in a week

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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

    • 5.0affected
    • 9bb7e0f24e7e7d00daa1219b14539e2e602649b2 and later · before af158188ef7b4e89d0a3c04680a98d90b3822ec5affected · git
    • 9bb7e0f24e7e7d00daa1219b14539e2e602649b2 and later · before 9374943fc5a45915e4ea8b597b6a17d3b571bcbfaffected · git
    • 9bb7e0f24e7e7d00daa1219b14539e2e602649b2 and later · before dc1e41df6e683ff9522bf40dd3125ed7ccd8a4e4affected · git
    • 9bb7e0f24e7e7d00daa1219b14539e2e602649b2 and later · before 7a22cbc6c6bdd3c3811b4ce13875685c520f94deaffected · git
    • 9bb7e0f24e7e7d00daa1219b14539e2e602649b2 and later · before db3439ad11ac5e52decdefe784c98b21c3757848affected · git
    • 9bb7e0f24e7e7d00daa1219b14539e2e602649b2 and later · before 6c5fc504d0d6934132637aa3db4b9b58148eaa78affected · git
    • before 5.0not 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
Debian:12linuxfrom 0—
Debian:14linuxbefore 7.2.6-17.2.6-1

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-2026-90341Sep 17, 2026 · firmware: coreboot: Validate table bounds
    30Monitor
  • ← EarlierCVE-2026-90342Sep 17, 2026 · bpf: Fix mmap_lock deadlock on arena lock failure
    0Monitor
  • Later →CVE-2026-90344Sep 17, 2026 · wifi: mac80211: disconnect on CSA to channel 0
    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 Linux6c5fc504d0d6934132637aa3db4b9b58148eaa78Vendor (CNA)
Linux Linux7a22cbc6c6bdd3c3811b4ce13875685c520f94deVendor (CNA)
Linux Linux9374943fc5a45915e4ea8b597b6a17d3b571bcbfVendor (CNA)
Linux Linuxaf158188ef7b4e89d0a3c04680a98d90b3822ec5Vendor (CNA)
Linux Linuxdb3439ad11ac5e52decdefe784c98b21c3757848Vendor (CNA)
Linux Linuxdc1e41df6e683ff9522bf40dd3125ed7ccd8a4e4Vendor (CNA)
debian:linux7.2.6-1 · Debian:14Package registry (OSV)

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.

No nightly-computed relations.

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).

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)

—

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.

MITRE has no CAPEC/ATT&CK mapping for this CWE.

Change log

  1. Fix✗ → ✓

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References

Show all references (5 more)

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

All records