CVE-2025-71227 json
wifi: mac80211: don't WARN for connections on invalid channels
published 2026-02-18 8 mo ago modified 2026-11-05 3 d ago also EUVD-2025-207830
- cvss
- 5.5
- version 3.1, NVD
- cisa kev
- Not listed
- not in CISA's catalog
- epss
- 0.2%
- EPSS 0.2% chance of exploitation in 30 days, percentile 7%
- public exploits
- 0
- none known
Summary
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.
Patch / fix
- Linux Linux 6.1.191, 6.6.160, 6.12.114, 6.18.10, 6.19
- linux Debian 13 6.12.115-2
- linux Debian 14 6.18.10-1
debian advisories DEBIAN-CVE-2025-71227
- git.kernel.org/stable/c/6acc2d23f13d60874981b4828ba156ba01c86510 commit
- git.kernel.org/stable/c/c02b1d244a5d799696ca74d3fba6539c8d76195f commit
- git.kernel.org/stable/c/579cf5939f8f4c4f88c75862d0c573fb13567b74 commit
- git.kernel.org/stable/c/10d3ff7e5812c8d70300f6fa8f524009a06aa7e1 commit
- git.kernel.org/stable/c/99067b58a408a384d2a45c105eb3dce980a862ce commit
Vendor advisories
What the vendors themselves say about their products: affected, fixed or not affected, and what to do.
red hat product security vex CVE-2025-71227 updated cvss 3.3
kernel: wifi: mac80211: don't WARN for connections on invalid channels
-
Red Hat Enterprise Linux 6 perf, kernel, python-perf, kernel-kdump, kernel-firmware, kernel-bootwrapper, +1 moreaffected: no fix planned “Out of support scope”
-
Red Hat Enterprise Linux 7 perf, kernel, bpftool, kernel-rt, python-perf, kernel-kdump, +8 more Red Hat Enterprise Linux 8 perf, kernel, bpftool, kernel-rt, kernel-core, kernel-tools, +29 more Red Hat Enterprise Linux 9 rv, perf, rtla, kernel, bpftool, libperf, +83 more Red Hat Enterprise Linux 10 kernelaffected: no fix available “Fix deferred”
Red Hat CSAF VEX © Red Hat, Inc., from https://security.access.redhat.com/data/csaf/v2/vex/; changed: reduced to product statuses and remediations. CC BY 4.0 · csaf
CISA SSVC
- Exploitation
- none
- Automatable
- no
- Technical impact
- partial
- Assessed
- 3 d ago
Exploit prediction
0.18% chance of exploitation in the next 30 days, higher than 7% of all scored CVEs (FIRST EPSS, 2026-11-08).
CVSS scores
| assigned by | version | score | vector |
|---|---|---|---|
| NVD | 3.1 | 5.5 | CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H |
Affected products
- Linux Linux
Classification
- Technology feeds
References
- git.kernel.org /stable/c/6acc2d23f13d60874981b4828ba156ba01c86510
- git.kernel.org /stable/c/c02b1d244a5d799696ca74d3fba6539c8d76195f
- git.kernel.org /stable/c/579cf5939f8f4c4f88c75862d0c573fb13567b74
-
git.kernel.org
/stable/c/10d3ff7e5812c8d70300f6fa8f524009a06aa7e1
patch
-
git.kernel.org
/stable/c/99067b58a408a384d2a45c105eb3dce980a862ce
patch
Sources
- CVE List CVE-2025-71227
- NVD CVE-2025-71227
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