wifi: cfg80211: stop PMSR before P2P and NAN teardown
CVE-2026-90343 · published 17 Sept 2026
How serious is it
- Severity: high, CVSS score 7.8 out of 10.
- No exploit prediction (EPSS) score yet.
- Not on the CISA list of exploited vulnerabilities.
- No public exploit in Exploit-DB.
Is your app affected by CVE-2026-90343?
Paste this prompt into Claude Code, Cursor or any AI coding tool: it runs a free Shippable scan of your project and fixes what it finds. Built with Lovable, Bolt or v0? Scan your live app. Or upload your package file.
Who is affected
- Linux Linux: 9bb7e0f24e7e7d00daa1219b14539e2e602649b2 to < 9374943fc5a45915e4ea8b597b6a17d3b571bcbf, 9bb7e0f24e7e7d00daa1219b14539e2e602649b2 to < dc1e41df6e683ff9522bf40dd3125ed7ccd8a4e4, 9bb7e0f24e7e7d00daa1219b14539e2e602649b2 to < 7a22cbc6c6bdd3c3811b4ce13875685c520f94de, 9bb7e0f24e7e7d00daa1219b14539e2e602649b2 to < db3439ad11ac5e52decdefe784c98b21c3757848
- Linux Linux: 5.0
How to check
- Find out whether you run the affected product and which version, then compare it with the versions above.
How to fix
Copies a prompt for Claude Code, Cursor or Codex that asks it to check whether you run this product.
- Apply the vendor's update or mitigation from the references below. If there is none yet, limit exposure of the affected service until there is.
- If a vulnerable version was live, check your logs and rotate the secrets that server could read.
The advisory
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.
Check your whole app
Dependencies are only half of it. Free and read-only: before you push, run npx shippable-dev scan localhost:3000 in your project folder, no account needed. For your live app, you prove it's yours with a one-line tag first.
References
- git.kernel.org/stable/c/9374943fc5a45915e4ea8b597b6a17d3b571bcbf
- git.kernel.org/stable/c/dc1e41df6e683ff9522bf40dd3125ed7ccd8a4e4
- git.kernel.org/stable/c/7a22cbc6c6bdd3c3811b4ce13875685c520f94de
- git.kernel.org/stable/c/db3439ad11ac5e52decdefe784c98b21c3757848
- git.kernel.org/stable/c/6c5fc504d0d6934132637aa3db4b9b58148eaa78
Merged from CVE List. Last updated 26 Oct 2026. All vulnerabilities · RSS · JSON