VulnerabilityPublished 18 Feb 2026Updated 21 Oct 2026

CVE-2025-71227: Linux kernel · wifi: mac80211: don't WARN for connections on invalid channels

Affects Linux kernelSource CVE Database V5

Not known to be exploited · fixed in c02b1d244a5d799696ca74d3fba6539c8d76195f : update Linux kernel when convenient.

Data as of 26 Oct 2026, 14:18 UTC

Severity

Unrated

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

EPSS: 0.1% chance of exploitation in 30 days – higher than 7% of CVEsExploit Prediction Scoring System: the likelihood attackers will use this flaw soon.
Patch: Available – fixed in c02b1d244a5d799696ca74d3fba6539c8d76195f, 99067b58a408a384d2a45c105eb3dce980a862ce, 579cf5939f8f4c4f88c75862d0c573fb13567b74 +1

Exploitation evidence

Disclosed: evidence found.
CVE published 18 Feb 2026
Detectable: no evidence on record.
No public nuclei template indexed
Weaponised: 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 26 Oct 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.
Weaponised: Public exploit code exists in Metasploit or Exploit-DB, 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 c02b1d244a5d799696ca74d3fba6539c8d76195f, 99067b58a408a384d2a45c105eb3dce980a862ce, 579cf5939f8f4c4f88c75862d0c573fb13567b74 or 10d3ff7e5812c8d70300f6fa8f524009a06aa7e1.

Affected software

Product	Affected	Fixed in
LinuxLinux	Affected ≥ f2d9d270c15ae0139b54a7e7466d738327e97e03, < c02b1d244a5d799696ca74d3fba6539c8d76195f	Fixed in c02b1d244a5d799696ca74d3fba6539c8d76195f
LinuxLinux	Affected ≥ f2d9d270c15ae0139b54a7e7466d738327e97e03, < 99067b58a408a384d2a45c105eb3dce980a862ce	Fixed in 99067b58a408a384d2a45c105eb3dce980a862ce
LinuxLinux	Affected ≥ f2d9d270c15ae0139b54a7e7466d738327e97e03, < 579cf5939f8f4c4f88c75862d0c573fb13567b74	Fixed in 579cf5939f8f4c4f88c75862d0c573fb13567b74
LinuxLinux	Affected ≥ f2d9d270c15ae0139b54a7e7466d738327e97e03, < 10d3ff7e5812c8d70300f6fa8f524009a06aa7e1	Fixed in 10d3ff7e5812c8d70300f6fa8f524009a06aa7e1
LinuxLinux	Affected =3.8	Fixed in–

Description

In the Linux kernel, the following vulnerability has been resolved: wifi: mac80211: don't WARN for connections on invalid channels It's not clear (to me) how exactly syzbot managed to hit this, but it seems conceivable that e.g. regulatory changed and has disabled a channel between scanning (channel is checked to be usable by cfg80211_get_ies_channel_number) and connecting on the channel later. With one scenario that isn't covered elsewhere described above, the warning isn't good, replace it with a (more informative) error message.

References

Community reviews

Loading reviews…