CVE-2024-49937

wifi: cfg80211: Set correct chandef when starting CAC

State: Published
Severity: Not scored
Published: Oct 21, 2024
Updated: May 23, 2026
Reserved: Oct 21, 2024

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]

Scores

The record has no CVSS score.

Weaknesses

The record names no weakness.

Affected Products

Product	Versions
LinuxLinux	7b0a0e3c3a88260b6fcb017e49f198463aa62ed1 to before 95f32191e50b75e0f75fae1bb925cdf51d8df0a3Affected 7b0a0e3c3a88260b6fcb017e49f198463aa62ed1 to before 04053e55dd50741cf6c59b9bbaa4238218c05c70Affected 7b0a0e3c3a88260b6fcb017e49f198463aa62ed1 to before f4dbfda159e43d49b43003cc3c2914751939035fAffected 7b0a0e3c3a88260b6fcb017e49f198463aa62ed1 to before c628026563f4ea9e0413dd4b69429e4a1db240b1Affected 7b0a0e3c3a88260b6fcb017e49f198463aa62ed1 to before 20361712880396e44ce80aaeec2d93d182035651Affected 7a53ad13c09150076b7ddde96c2dfc5622c90b45Affected 5.19.2 to before 5.20Affected
LinuxLinux	6.0Affected before 6.0Not affected 6.1.113 through 6.1.Not affected 6.6.55 through 6.6.Not affected 6.10.14 through 6.10.Not affected 6.11.3 through 6.11.Not affected 6.12 and laterNot affected

Product

Versions

LinuxLinux

7b0a0e3c3a88260b6fcb017e49f198463aa62ed1 to before 95f32191e50b75e0f75fae1bb925cdf51d8df0a3Affected
7b0a0e3c3a88260b6fcb017e49f198463aa62ed1 to before 04053e55dd50741cf6c59b9bbaa4238218c05c70Affected
7b0a0e3c3a88260b6fcb017e49f198463aa62ed1 to before f4dbfda159e43d49b43003cc3c2914751939035fAffected
7b0a0e3c3a88260b6fcb017e49f198463aa62ed1 to before c628026563f4ea9e0413dd4b69429e4a1db240b1Affected
7b0a0e3c3a88260b6fcb017e49f198463aa62ed1 to before 20361712880396e44ce80aaeec2d93d182035651Affected
7a53ad13c09150076b7ddde96c2dfc5622c90b45Affected
5.19.2 to before 5.20Affected

LinuxLinux

6.0Affected
before 6.0Not affected
6.1.113 through 6.1.*Not affected
6.6.55 through 6.6.*Not affected
6.10.14 through 6.10.*Not affected
6.11.3 through 6.11.*Not affected
6.12 and laterNot affected

References

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