CVE-2026-90343

HIGHPre-NVD 7.87.8—
EchelonGraph scoreHIGH confidence

Score 7.8 from GitHub Security Advisory (severity: HIGH) published 2026-09-17. A secondary CVSS source baseline 7.8; sources differ by 0.0.

Triggered by: GitHub Security Advisory CVSS
Sources: epss, ghsa, secondary
Trending — 3 sources updated this week
7.8EG
EchelonGraph verdictPlan mitigationSerious severity, but no confirmed exploitation yet.
  • High severity, but no confirmed exploitation yet
CISA-KEV: Not listedEPSS PROB: 0.2%CVSS: 7.8Exploit: None knownExposed services: Not assessed

No fix is confirmed yet — apply a workaround or compensating control (WAF / firewall / segmentation) and watch for the fix.

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.

CVSS v3
7.8
EG Score
7.8HIGHhigh confidence
EG Risk
40
EG Risk 40/100CISA SSVC

EG Risk is EchelonGraph's 0–100 priority score: it fuses intrinsic severity with real-world exploitation and automatability so you can rank equal-severity CVEs and fix the most dangerous first. Higher = act sooner. Distinct from the 0–10 EG Score (severity).

How it’s computed
Severity78% × 45%
Exploitation0% × 40%
Automatability30% × 15%
CISA SSVC: Track at low or medium mission impact; Track or Attend at high (mission-essential systems).
Action: No fix is confirmed yet. Restrict network exposure of the affected system or apply the vendor's mitigation within your standard update timelines at low or medium mission impact and sooner than that at high, and watch the vendor's advisory for the fix.
EPSS PROB
0.2%
EPSS %ILE
6th
KEV
Not listed

CISA SSVCTrack at low or medium mission impact; Track or Attend at high (mission-essential systems).

No fix is confirmed yet. Restrict network exposure of the affected system or apply the vendor's mitigation within your standard update timelines at low or medium mission impact and sooner than that at high, and watch the vendor's advisory for the fix.

Exploitation none (no KEV listing, exploit record or EPSS ≥ 50%) · Automatable unknown (not published for this CVE) · Technical impact partial (CVSS below 9.0). Mission impact is CISA's Mission & Well-being decision point, and only you can judge it: high means the affected system is essential to your organisation's mission, or its compromise could cause irreversible harm to people. CISA's decision table

Published

September 17, 2026

Last Modified

September 18, 2026

Advisory Details (3)

Auto-updated Sep 18, 2026
No patch confirmed yet.
generic

wifi: cfg80211: stop PMSR before P2P and NAN teardown - kernel/git/stable/linux.git - Linux kernel stable tree

https://git.kernel.org/stable/c/6c5fc504d0d6934132637aa3db4b9b58148eaa78
generic

wifi: cfg80211: stop PMSR before P2P and NAN teardown - kernel/git/stable/linux.git - Linux kernel stable tree

https://git.kernel.org/stable/c/db3439ad11ac5e52decdefe784c98b21c3757848
generic

wifi: cfg80211: stop PMSR before P2P and NAN teardown - kernel/git/stable/linux.git - Linux kernel stable tree

https://git.kernel.org/stable/c/7a22cbc6c6bdd3c3811b4ce13875685c520f94de

Vendor Advisories for CVE-2026-90343(1)

These vendors published their own advisory mentioning this CVE — often with vendor-specific remediation steps + affected product lists not in NVD.

Affected Packages

(3 across 3 ecosystems)
Debian:12(1)
PackageVulnerable rangeFix by version rangeDependents
linux6.1.106-1 ... 7.2~rc7-1~exp1 (358 versions)
  • every version on: no fix on record
—
Debian:13(1)
PackageVulnerable rangeFix by version rangeDependents
linux6.12.100-1 ... 7.2~rc7-1~exp1 (181 versions)
  • every version on: no fix on record
—
Debian:14(1)
PackageVulnerable rangeFix by version rangeDependents
linux6.12.100-1 ... 7.2~rc7-1~exp1 (178 versions)
  • every version up to 7.2.6-1: fixed in 7.2.6-1
—

Data Freshness Timeline

(refreshed 26× in last 7d / 67× in last 30d)

Each row is a source pipeline that fetched or updated this CVE on that date, with what changed. For example, "NVD update" means NVD published or revised its analysis for this CVE; "MITRE cvelistV5" means we ingested or refreshed it from the CNA feed. Most recent first.

  1. 2026-10-05 06:25 UTCEG score recompute
  2. 2026-10-05 06:25 UTCGHSA enrichment
  3. 2026-10-04 23:22 UTCEPSS rescore
  4. 2026-10-04 17:14 UTCGHSA enrichment
  5. 2026-10-04 03:54 UTCGHSA enrichment
  6. 2026-10-03 14:44 UTCEG score recompute
  7. 2026-10-03 14:44 UTCGHSA enrichment
  8. 2026-10-03 01:27 UTCEG score recompute
  9. 2026-10-03 01:27 UTCGHSA enrichment
  10. 2026-10-02 12:17 UTCGHSA enrichment
  11. 2026-10-01 22:54 UTCEG score recompute
  12. 2026-10-01 22:54 UTCGHSA enrichment
  13. 2026-10-01 19:51 UTCEPSS rescore
  14. 2026-10-01 09:46 UTCGHSA enrichment
  15. 2026-09-30 20:39 UTCEG score recompute
  16. 2026-09-30 20:38 UTCGHSA enrichment
  17. 2026-09-30 15:04 UTCEPSS rescore
  18. 2026-09-30 07:31 UTCGHSA enrichment
  19. 2026-09-29 18:22 UTCEG score recompute
  20. 2026-09-29 18:22 UTCGHSA enrichment
  21. 2026-09-29 04:12 UTCEG score recompute
  22. 2026-09-29 04:12 UTCGHSA enrichment
  23. 2026-09-28 15:04 UTCEG score recompute
  24. 2026-09-28 15:04 UTCGHSA enrichment
  25. 2026-09-28 13:52 UTCEPSS rescore
Show 42 more
  1. 2026-09-28 13:52 UTCEPSS rescore
  2. 2026-09-28 01:55 UTCEG score recompute
  3. 2026-09-28 01:55 UTCGHSA enrichment
  4. 2026-09-27 13:49 UTCEPSS rescore
  5. 2026-09-27 12:47 UTCGHSA enrichment
  6. 2026-09-26 23:39 UTCEG score recompute
  7. 2026-09-26 23:39 UTCGHSA enrichment
  8. 2026-09-26 15:59 UTCEPSS rescore
  9. 2026-09-26 10:31 UTCEG score recompute
  10. 2026-09-26 10:30 UTCGHSA enrichment
  11. 2026-09-25 21:19 UTCGHSA enrichment
  12. 2026-09-25 08:11 UTCGHSA enrichment
  13. 2026-09-24 19:03 UTCEG score recompute
  14. 2026-09-24 19:03 UTCGHSA enrichment
  15. 2026-09-24 14:04 UTCEPSS rescore
  16. 2026-09-24 05:55 UTCEG score recompute
  17. 2026-09-24 05:55 UTCGHSA enrichment
  18. 2026-09-23 17:54 UTCEPSS rescore
  19. 2026-09-23 16:47 UTCGHSA enrichment
  20. 2026-09-23 03:40 UTCGHSA enrichment
  21. 2026-09-22 14:32 UTCGHSA enrichment
  22. 2026-09-22 01:23 UTCEG score recompute
  23. 2026-09-22 01:23 UTCGHSA enrichment
  24. 2026-09-21 21:09 UTCEPSS rescore
  25. 2026-09-21 12:15 UTCGHSA enrichment
  26. 2026-09-20 23:07 UTCEG score recompute
  27. 2026-09-20 23:07 UTCGHSA enrichment
  28. 2026-09-20 20:16 UTCEPSS rescore
  29. 2026-09-20 09:54 UTCGHSA enrichment
  30. 2026-09-19 20:46 UTCEG score recompute
  31. 2026-09-19 20:46 UTCGHSA enrichment
  32. 2026-09-19 07:38 UTCEG score recompute
  33. 2026-09-19 07:38 UTCGHSA enrichment
  34. 2026-09-18 19:28 UTCEPSS rescore
  35. 2026-09-18 18:30 UTCEG score recompute
  36. 2026-09-18 18:30 UTCGHSA enrichment
  37. 2026-09-18 18:02 UTCEG score recompute▲ 7.80
  38. 2026-09-18 18:02 UTCGHSA enrichment
  39. 2026-09-18 17:59 UTCMITRE cvelistV5CVSS v3 → 7.8 · severity → HIGH
  40. 2026-09-17 17:24 UTCNVD update
  41. 2026-09-17 16:28 UTCEG score recompute
  42. 2026-09-17 16:19 UTCMITRE cvelistV5first tracked

Frequently asked(5)

What is CVE-2026-90343?
CVE-2026-90343 is a high vulnerability published on September 17, 2026. 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 wirelessdev is still present in the driver. cfg80211leave_locked() and cfg80211stoppd() already do this before…
When was CVE-2026-90343 disclosed?
CVE-2026-90343 was first published on September 17, 2026, with the most recent update on September 18, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2026-90343 actively exploited?
CVE-2026-90343 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 0.2% probability of exploitation in the next 30 days (6th percentile of EPSS-scored CVEs).
What is the CVSS score of CVE-2026-90343?
CVE-2026-90343 has a CVSS base score of 7.8 (a secondary CVSS source that NVD displays; NVD's own analysis pending).
How do I remediate CVE-2026-90343?
No fix for CVE-2026-90343 is confirmed yet. Until one is published, restrict network exposure of the affected system or apply the vendor's mitigation — for example, keep it off the internet or limit it to trusted networks — and watch the vendor's advisory for the fix. The vendor advisories EchelonGraph has for CVE-2026-90343 are linked in the Vendor Advisories panel on this page.

Dependency Blast Radius

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