wifi: mac80211_hwsim: don't hand frames to mac80211 while stopping
CVSS score
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EPSS probability
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Risk score
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Published
5 h ago
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Vulnerability description
CVE AI research
DayBreach AI Explanation
Verified against sourcesSources read
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Source agreement
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Evidence confidence
%63
Short explanation
A race condition during frame delivery while stopping the radio in the wifi: mac80211_hwsim module of the Linux kernel can trigger a WARN_ON condition.
This vulnerability can lead to instability and the triggering of warning states within the Linux kernel wireless simulation subsystem.
What should be done?
- Follow vendor advisories and apply available kernel updates
Chain of evidence and sources
Linux çekirdeği mac80211_hwsim bileşeninde radyo durdurulurken çerçeve iletimi WARN_ON koşuluna yol açabilmektedir.
Sorunun giderilmesi için mutex kapsamı genişletilmiş ve radyo durdurulduğunda senkronizasyon sağlanmıştır.
Show the technical text from the sources
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.
Explanation produced with the local gemini-flash-lite-latest model. Numerical metrics and the KEV, patch and exploit statuses are not determined by AI.
IMPACT: Affected Products and Software
RED HAT CSAF/VEX: Product Impact Check
SCORING: CVSS from Multiple Sources
CVSS Scores
The Common Vulnerability Scoring System is a standardised framework for assessing the severity of vulnerabilities in software and systems. We collect and display CVSS scores from several sources for each CVE.
| SCORE | VERSION | SEVERITY | VECTOR | SOURCE |
|---|---|---|---|---|
| The sources have not yet published a verified CVSS metric. | ||||
Patch and Remediation Guide
Solution & Remediation Advisory
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Public exploit and active exploitation status
Verified exploit intelligence
No verified public PoC, exploit repository or Metasploit module has been found for this CVE yet.
Weakness Classification and Attack Patterns (CWE & CAPEC)
CWE - Common Weakness Enumeration
While CVE identifies specific instances of vulnerabilities, CWE categorises the common flaws or weaknesses that can lead to vulnerabilities. CVE-2026-98423 is associated with the following CWEs:
Common Attack Pattern Enumeration and Classification (CAPEC)
Common Attack Pattern Enumeration and Classification (CAPEC) stores attack patterns, which are descriptions of the common attributes and approaches employed by adversaries to exploit the CVE-2026-98423 weaknesses.
Official Sources and Advisories
Yama durumu bilinmiyor
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