Riskcovery

CVE-2026-98423

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

State
Published
Severity
Not scored
Published
Oct 14, 2026
Updated
Oct 19, 2026
Reserved
Sep 25, 2026

Read the record on cve.org

Description

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.

Scores

The record has no CVSS score.

Weaknesses

The record names no weakness.

Affected Products

ProductVersions
LinuxLinux
  • 7882513bacb176ab4aacceefdd035ca9479da4fb to before 5ce9b2bc9e73213e316a8c72400256a76bf41814Affected
  • 7882513bacb176ab4aacceefdd035ca9479da4fb to before c4e4fe330294e3936e0f4e15d6996468f8a45fb2Affected
  • 7882513bacb176ab4aacceefdd035ca9479da4fb to before 2f59be7585dc81baa6f36b0035dd6848ea43d318Affected
  • 7882513bacb176ab4aacceefdd035ca9479da4fb to before 5c79ef616aa16af582fb2cb93b0f750975a0004fAffected
  • 7882513bacb176ab4aacceefdd035ca9479da4fb to before d7fa45d8123a7f794b93fc22dbcf19f38dc4d8cbAffected
  • 7882513bacb176ab4aacceefdd035ca9479da4fb to before 87840d4a3a21b1c19b867a80e16ba69dff284de2Affected
LinuxLinux
  • 3.1Affected
  • before 3.1Not affected
  • 6.1.189 through 6.1.*Not affected
  • 6.6.158 through 6.6.*Not affected
  • 6.12.112 through 6.12.*Not affected
  • 6.18.54 through 6.18.*Not affected
  • 7.2.8 through 7.2.*Not affected
  • 7.3 and laterNot affected

References

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