VulnerabilityPublished 22 Aug 2025Updated 5 Nov 2026

CVE-2025-38642: Linux kernel · wifi: mac80211: fix WARN_ON for monitor mode on some devices

Affects Linux kernelSource CVE Database V5

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Not known to be exploited · fixed in ff15498ebaa49c5429a74e70a1951dede60cd14c : update Linux kernel when convenient.

Data as of 5 Nov 2026, 21:34 UTC

Severity

Unrated

Rated by Threat Radar · No CVSS score from NVD or the CNA

Thin evidence

One scorer or none

Exploitation: No evidence of active exploitation and no public proof of concept
Automatable: Attackers cannot reliably automate steps 1–4 of the kill chain
Technical impact: Limited control over the software or limited information exposure

CISA SSVC assessment, 2026-11-05.

Patch

Available – fixed in ff15498ebaa49c5429a74e70a1951dede60cd14c, c57e5b9819dfd16d709bcd6cb633301ed0829a66, 1e10ded6b0f9b0eeefaacbb6c6c6afff3f702812

Exploitation evidence

Disclosed: evidence found.
CVE published 22 Aug 2025
Detectable: no evidence on record.
No public nuclei template indexed
Weaponized: no evidence on record.
No public exploit code indexed in Metasploit or Exploit-DB
Exploited in the wildExploited: no evidence on record.
Not in CISA KEV and no source reports exploitation
Observed by OffSeq MirageSeen by Mirage: no evidence on record.
No attack traffic recorded by OffSeq Mirage sensors

A missing step is not evidence of safety. Sources: cve.org (opens in a new tab), the Metasploit, Exploit-DB and nuclei-templates index as of 5 Nov 2026.

Disclosed: The CVE record is public on cve.org. Its publication is t = 0.
Detectable: A public nuclei template can find exposed instances, for defenders and attackers alike.
Weaponized: A Metasploit exploit module or Exploit-DB entry exists (Metasploit scanner modules do not count), or CISA SSVC or the CVSS exploit maturity reports a public proof of concept.
Exploited in the wild: CISA KEV lists it, CISA SSVC rates exploitation active, or a source reports attacks.
Observed by OffSeq Mirage: OffSeq Mirage honeypot sensors recorded attack traffic for this CVE, or found exposed hosts without attack traffic.

Moments are spaced evenly, not to scale; a dashed line marks a gap of six months or more. Deltas count from t = 0. Sources that give only a date (CISA KEV, Exploit-DB, or a time of exactly 00:00Z) read “same day” rather than hours. Metasploit modules carry the flaw’s disclosure date, not their release date, and nuclei templates carry no date, so both appear above but not on the timeline.

What to do

Upgrade Linux kernel to ff15498ebaa49c5429a74e70a1951dede60cd14c, c57e5b9819dfd16d709bcd6cb633301ed0829a66 or 1e10ded6b0f9b0eeefaacbb6c6c6afff3f702812.

Affected software

Product	Affected	Fixed in
LinuxLinux	Affected ≥ c4382d5ca1af75cf909463c7a707efd1a5f9a557, < ff15498ebaa49c5429a74e70a1951dede60cd14c	Fixed in ff15498ebaa49c5429a74e70a1951dede60cd14c
LinuxLinux	Affected ≥ c4382d5ca1af75cf909463c7a707efd1a5f9a557, < c57e5b9819dfd16d709bcd6cb633301ed0829a66	Fixed in c57e5b9819dfd16d709bcd6cb633301ed0829a66
LinuxLinux	Affected ≥ c4382d5ca1af75cf909463c7a707efd1a5f9a557, < 1e10ded6b0f9b0eeefaacbb6c6c6afff3f702812	Fixed in 1e10ded6b0f9b0eeefaacbb6c6c6afff3f702812
LinuxLinux	Affected =6.13	Fixed in–

Description

In the Linux kernel, the following vulnerability has been resolved: wifi: mac80211: fix WARN_ON for monitor mode on some devices On devices without WANT_MONITOR_VIF (and probably without channel context support) we get a WARN_ON for changing the per-link setting of a monitor interface. Since we already skip AP_VLAN interfaces and MONITOR with WANT_MONITOR_VIF and/or NO_VIRTUAL_MONITOR should update the settings, catch this in the link change code instead of the warning.

References

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