CVE Tools
Track your stack

CVE-2026-98423

wifi: mac80211_hwsim: don't hand frames to mac80211 while stopping

No known exploitation. EPSS puts it in the 11th percentile. Fixed versions are out.

CVSS —Not scoredEPSS percentile11th0.2% chance in 30 daysCISA KEVNot listedNo confirmed exploitation
No public exploit knownFix1 product4 fixed builds listed below

Published Updated Sources: CVE.org, NVD

NVD CVE.org

What to do

Find your product and version, then upgrade to the build on the right.

  • LinuxAffected: ≥ 7882513bacb176ab4aacceefdd035ca9479da4fb, < 5ce9b2bc9e73213e316a8c72400256a76bf41814Upgrade to: 5ce9b2bc9e73213e316a8c72400256a76bf41814Affected: ≥ 7882513bacb176ab4aacceefdd035ca9479da4fb, < c4e4fe330294e3936e0f4e15d6996468f8a45fb2Upgrade to: c4e4fe330294e3936e0f4e15d6996468f8a45fb2Affected: ≥ 7882513bacb176ab4aacceefdd035ca9479da4fb, < 2f59be7585dc81baa6f36b0035dd6848ea43d318Upgrade to: 2f59be7585dc81baa6f36b0035dd6848ea43d318Affected: ≥ 7882513bacb176ab4aacceefdd035ca9479da4fb, < 5c79ef616aa16af582fb2cb93b0f750975a0004fUpgrade to: 5c79ef616aa16af582fb2cb93b0f750975a0004f + 2 more branchesStated by: CVE record

Versions as the sources state them. Full version matrix after sign-in

Check it yourselfA free OpenVAS check exists for this CVE. Run it against your hosts.Is your organisation exposed?Request an assessment to establish which checks fit your systems.

What it is

From the CVE record

In the Linux kernel, the following vulnerability has been resolved: wifi: mac80211_hwsim: don't hand frames to mac80211 while stopping The code checks ->started for frames coming from wmediumd, but the radio can be stopped after the check and before frame delivery, causing mac80211 to hit the WARN_ON(!local->started). Expand the mutex for this case and synchronise against it when the radio is stopped to avoid being able to hit the warning with hwsim. Drop the error print that would've complicated the error path, it only triggers for allocation failures (already noisy) and malformed frames anyway.

In plain language

No plain-language summary for this CVE yet.

Exploitation

Where each signal puts this CVE on the scale from published to confirmed exploited.

EPSS11th
CISA KEV

Not in the catalog. CISA has not confirmed exploitation.

Public exploits

No public exploit or proof of concept found in the sources we track.

EPSS

0.2% chance of exploitation activity in the next 30 days, which ranks it in the 11th percentile of scored CVEs.

Exploit Prediction Scoring System, FIRST.org. A probability, not a confirmation.

Lifecycle

4 events over 8 days, from the signal feeds we watch.

  1. OpenVAS check added
  2. Record updated
  3. Publishedrecord updated

Affected products

Sources

References in the record

And 3 more references. See all after sign-in

Watch the software you run.

My Stack ranks new CVEs for your products by real-world exploitation, so the next serious one reaches you without reading every advisory.

We'll flag the next CVE, public exploit or patch for Linux, not every advisory.