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CVE-2024-49937 Details

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]

Metrics

CVSS 3.x Severity and Vector Strings:

NIST: [email protected]CVSS-B:5.5 MEDIUMVector:CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H

References to Advisories, Solutions, and Tools

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URL	Source(s)	Tag(s)
https://git.kernel.org/stable/c/04053e55dd50741cf6c59b9bbaa4238218c05c70	kernel.org	Patch
https://git.kernel.org/stable/c/20361712880396e44ce80aaeec2d93d182035651	kernel.org	Patch
https://git.kernel.org/stable/c/95f32191e50b75e0f75fae1bb925cdf51d8df0a3	kernel.org	Patch
https://git.kernel.org/stable/c/c628026563f4ea9e0413dd4b69429e4a1db240b1	kernel.org	Patch
https://git.kernel.org/stable/c/f4dbfda159e43d49b43003cc3c2914751939035f	kernel.org	Patch
https://lists.debian.org/debian-lts-announce/2025/01/msg00001.html	CVE

see all 6 references

Weakness Enumeration

CWE-ID	CWE Name	Source
NVD-CWE-noinfo	Insufficient Information to Classify Weakness	[email protected]

Affected Products

Product	Versions
linux linux kernel	< 6.1.113 >= 6.2, < 6.6.55 >= 6.7, < 6.10.14 >= 6.11, < 6.11.3
CPE cpe:2.3:o:linux:linux_kernel:::::::: Remediation No remediation found in references.

Change History

5 change records found show changes

Date	Action	Recorded By
Jun 17, 2026	CVE Modified	kernel.org
Jun 17, 2026	CVE Modified	CISA-ADP
Nov 3, 2025	CVE Modified	CVE
Nov 13, 2024	Initial Analysis	[email protected]
Oct 21, 2024	New CVE Received	kernel.org