CVE-2025-71227: Linux kernel · wifi: mac80211: don't WARN for connections on invalid channels
Affects Linux kernelSource GCVE Database
Not known to be exploited · CVSS 5.5 Medium.
Data as of 26 Oct 2026, 17:16 UTC
- 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.
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
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.
What to do
Affected software
| Product | Affected | Fixed in |
|---|---|---|
Ubuntu 25.10linuxpkg:deb/ubuntu/linux?arch=source&distro=questingOther threats | Affected
| Fixed in– |
Ubuntu 25.10linux-awspkg:deb/ubuntu/linux-aws?arch=source&distro=questingOther threats | Affected
| Fixed in– |
Ubuntu 25.10linux-azurepkg:deb/ubuntu/linux-azure?arch=source&distro=questingOther threats | Affected
| Fixed in– |
Ubuntu 25.10linux-azure-fdepkg:deb/ubuntu/linux-azure-fde?arch=source&distro=questingOther threats | Affected
| Fixed in– |
Ubuntu 25.10linux-gcppkg:deb/ubuntu/linux-gcp?arch=source&distro=questingOther threats | Affected
| Fixed in– |
Ubuntu 25.10linux-oraclepkg:deb/ubuntu/linux-oracle?arch=source&distro=questingOther threats | Affected
| Fixed in– |
Check your own hosts for these packages with threat-finder (opens in a new tab), our free open-source scanner.
AI-suggested
A fix is available that replaces the warning with an error message in the affected Linux kernel versions. Users should update to patched versions of the Linux kernel to remediate this issue. No additional mitigation steps are indicated by the vendor advisory.
Description
A vulnerability in the Linux kernel's mac80211 WiFi component was resolved that involved improper handling of connections on invalid channels. The issue caused warnings when connecting on channels that became invalid due to regulatory changes between scanning and connection attempts. The fix replaced these warnings with more informative error messages to avoid unnecessary warnings.
References
- ubuntu.com/security/CVE-2025-71227 (opens in a new tab)
- cve.org/CVERecord?id=CVE-2025-71227 (opens in a new tab)
- git.kernel.org/linus/99067b58a408a384d2a45c105eb3dce980a862ce (opens in a new tab)
- git.kernel.org/stable/c/10d3ff7e5812c8d70300f6fa8f524009a06aa7e1 (opens in a new tab)
- git.kernel.org/stable/c/99067b58a408a384d2a45c105eb3dce980a862ce (opens in a new tab)