Description
In the Linux kernel, the following vulnerability has been resolved: wifi: cfg80211: Set correct chandef when starting CAC When starting CAC in a mode other than AP mode, it return a "WARNING: CPU: 0 PID: 63 at cfg80211_chandef_dfs_usable+0x20/0xaf [cfg80211]" caused by the chandef.chan being null at the end of CAC. Solution: Ensure the channel definition is set for the different modes when starting CAC to avoid getting a NULL 'chan' at the end of CAC. Call Trace: ? show_regs.part.0+0x14/0x16 ? __warn+0x67/0xc0 ? cfg80211_chandef_dfs_usable+0x20/0xaf [cfg80211] ? report_bug+0xa7/0x130 ? exc_overflow+0x30/0x30 ? handle_bug+0x27/0x50 ? exc_invalid_op+0x18/0x60 ? handle_exception+0xf6/0xf6 ? exc_overflow+0x30/0x30 ? cfg80211_chandef_dfs_usable+0x20/0xaf [cfg80211] ? exc_overflow+0x30/0x30 ? cfg80211_chandef_dfs_usable+0x20/0xaf [cfg80211] ? regulatory_propagate_dfs_state.cold+0x1b/0x4c [cfg80211] ? cfg80211_propagate_cac_done_wk+0x1a/0x30 [cfg80211] ? process_one_work+0x165/0x280 ? worker_thread+0x120/0x3f0 ? kthread+0xc2/0xf0 ? process_one_work+0x280/0x280 ? kthread_complete_and_exit+0x20/0x20 ? ret_from_fork+0x19/0x24 [shorten subject, remove OCB, reorder cases to match previous list]
Affected products
Version statuses are supplied by the assigning organization. Consult the original record for detailed ranges and platform conditions.
Linux Linux
Default version status: unaffected
7b0a0e3c3a88260b6fcb017e49f198463aa62ed1 to < 95f32191e50b75e0f75fae1bb925cdf51d8df0a3affected7b0a0e3c3a88260b6fcb017e49f198463aa62ed1 to < 04053e55dd50741cf6c59b9bbaa4238218c05c70affected7b0a0e3c3a88260b6fcb017e49f198463aa62ed1 to < f4dbfda159e43d49b43003cc3c2914751939035faffected7b0a0e3c3a88260b6fcb017e49f198463aa62ed1 to < c628026563f4ea9e0413dd4b69429e4a1db240b1affected7b0a0e3c3a88260b6fcb017e49f198463aa62ed1 to < 20361712880396e44ce80aaeec2d93d182035651affected7a53ad13c09150076b7ddde96c2dfc5622c90b45affected5.19.2 to < 5.20affected
Linux Linux
Default version status: affected
6.0affected0 to < 6.0unaffected6.1.113 to ≤ 6.1.*unaffected6.6.55 to ≤ 6.6.*unaffected6.10.14 to ≤ 6.10.*unaffected6.11.3 to ≤ 6.11.*unaffected6.12 to ≤ *unaffected
References
- https://git.kernel.org/stable/c/95f32191e50b75e0f75fae1bb925cdf51d8df0a3 ↗
- https://git.kernel.org/stable/c/04053e55dd50741cf6c59b9bbaa4238218c05c70 ↗
- https://git.kernel.org/stable/c/f4dbfda159e43d49b43003cc3c2914751939035f ↗
- https://git.kernel.org/stable/c/c628026563f4ea9e0413dd4b69429e4a1db240b1 ↗
- https://git.kernel.org/stable/c/20361712880396e44ce80aaeec2d93d182035651 ↗
- https://lists.debian.org/debian-lts-announce/2025/01/msg00001.html ↗