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CVE-2026-90343NVD

Vulnerability Summary

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.
Severity Level
HIGH(7.8)
Published Date
Sep 17, 2026
Last Modified
Sep 18, 2026
Exploitation Status
No confirmed exploitation yet
EPSS Score (30-Day)
0.16%Probability
Root Weakness (CWE)
N/A
CVSS v3.1 Base Metrics — Score 7.8 (HIGH)
Attack VectorLocal
Attack ComplexityLow
Privileges RequiredLow
User InteractionNone
ScopeUnchanged
ConfidentialityHigh
IntegrityHigh
AvailabilityHigh

Affected & Patched Versions

Affected Versions
  • Linux Linux >= 9bb7e0f24e7e7d00daa1219b14539e2e602649b2 and < 7a22cbc6c6bdd3c3811b4ce13875685c520f94de
  • Linux Linux >= 9bb7e0f24e7e7d00daa1219b14539e2e602649b2 and < db3439ad11ac5e52decdefe784c98b21c3757848
  • Linux Linux >= 9bb7e0f24e7e7d00daa1219b14539e2e602649b2 and < 6c5fc504d0d6934132637aa3db4b9b58148eaa78
  • Linux Linux >= 5.0
Patched Versions
  • Linux Linux 7a22cbc6c6bdd3c3811b4ce13875685c520f94de
  • Linux Linux db3439ad11ac5e52decdefe784c98b21c3757848
  • Linux Linux 6c5fc504d0d6934132637aa3db4b9b58148eaa78
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