CVE-2025-71227: Linux kernel · wifi: mac80211: don't WARN for connections on invalid channels
Source GCVE Database
Not known to be exploited · CVSS 5.5 Medium · fixed in c02b1d244a5d799696ca74d3fba6539c8d76195f : update Linux kernel when convenient.
Data as of 30 Oct 2026, 16:33 UTC
Thin evidence
One scorer or none- Patch
- Available – fixed in c02b1d244a5d799696ca74d3fba6539c8d76195f, 99067b58a408a384d2a45c105eb3dce980a862ce, 579cf5939f8f4c4f88c75862d0c573fb13567b74 +2
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:HExploitation evidence
Disclosed: evidence found.
CVE published 18 Feb 2026
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 30 Oct 2026.
What to do
Upgrade to a fixed release listed under Affected software.
Affected software
| Product | Affected | Fixed in |
|---|---|---|
| LinuxLinux | Affected
| Fixed in
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| LinuxLinux | Affected
| Fixed in
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| LinuxLinux | Affected
| Fixed in
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| LinuxLinux | Affected
| Fixed in
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| LinuxLinux | Affected
| Fixed in
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| LinuxLinux | Affected
| 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
- nvd.nist.gov/vuln/detail/CVE-2025-71227 (opens in a new tab)
- git.kernel.org/stable/c/10d3ff7e5812c8d70300f6fa8f524009a06aa7e1 (opens in a new tab)
- git.kernel.org/stable/c/579cf5939f8f4c4f88c75862d0c573fb13567b74 (opens in a new tab)
- git.kernel.org/stable/c/6acc2d23f13d60874981b4828ba156ba01c86510 (opens in a new tab)
- git.kernel.org/stable/c/99067b58a408a384d2a45c105eb3dce980a862ce (opens in a new tab)
- git.kernel.org/stable/c/c02b1d244a5d799696ca74d3fba6539c8d76195f (opens in a new tab)