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.
Fix
Patch, vendor advisory and mitigation references on NVD 2
- https://git.kernel.org/stable/c/10d3ff7e5812c8d70300f6fa8f524009a06aa7e1 Patch
- https://git.kernel.org/stable/c/99067b58a408a384d2a45c105eb3dce980a862ce Patch
Every line above is quoted from NVD, CISA, Microsoft, the vendor's own advisory or DISA; nothing is generated.
Change history 4
- Cpes+4 CPE criteria (now 4)NVD modified 2026-10-21 13:18
- StatusPublished → ModifiedNVD modified 2026-10-21 13:18
- CVSS5.5 (v3.1, CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H)NVD modified 2026-10-21 13:18
- First seenunscored · linuxNVD modified 2026-10-21 12:38
Affected (CPE criteria) 4
cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*cpe:2.3:o:linux:linux_kernel:6.19:rc1:*:*:*:*:*:*cpe:2.3:o:linux:linux_kernel:6.19:rc2:*:*:*:*:*:*cpe:2.3:o:linux:linux_kernel:6.19:rc3:*:*:*:*:*:*
References 4
- https://git.kernel.org/stable/c/10d3ff7e5812c8d70300f6fa8f524009a06aa7e1 Patch
- https://git.kernel.org/stable/c/579cf5939f8f4c4f88c75862d0c573fb13567b74
- https://git.kernel.org/stable/c/99067b58a408a384d2a45c105eb3dce980a862ce Patch
- https://git.kernel.org/stable/c/c02b1d244a5d799696ca74d3fba6539c8d76195f