{"id":"CVE-2024-49937","summary":"wifi: cfg80211: Set correct chandef when starting CAC","details":"In the Linux kernel, the following vulnerability has been resolved:\n\nwifi: cfg80211: Set correct chandef when starting CAC\n\nWhen starting CAC in a mode other than AP mode, it return a\n\"WARNING: CPU: 0 PID: 63 at cfg80211_chandef_dfs_usable+0x20/0xaf [cfg80211]\"\ncaused by the chandef.chan being null at the end of CAC.\n\nSolution: Ensure the channel definition is set for the different modes\nwhen starting CAC to avoid getting a NULL 'chan' at the end of CAC.\n\n Call Trace:\n  ? show_regs.part.0+0x14/0x16\n  ? __warn+0x67/0xc0\n  ? cfg80211_chandef_dfs_usable+0x20/0xaf [cfg80211]\n  ? report_bug+0xa7/0x130\n  ? exc_overflow+0x30/0x30\n  ? handle_bug+0x27/0x50\n  ? exc_invalid_op+0x18/0x60\n  ? handle_exception+0xf6/0xf6\n  ? exc_overflow+0x30/0x30\n  ? cfg80211_chandef_dfs_usable+0x20/0xaf [cfg80211]\n  ? exc_overflow+0x30/0x30\n  ? cfg80211_chandef_dfs_usable+0x20/0xaf [cfg80211]\n  ? regulatory_propagate_dfs_state.cold+0x1b/0x4c [cfg80211]\n  ? cfg80211_propagate_cac_done_wk+0x1a/0x30 [cfg80211]\n  ? process_one_work+0x165/0x280\n  ? worker_thread+0x120/0x3f0\n  ? kthread+0xc2/0xf0\n  ? process_one_work+0x280/0x280\n  ? kthread_complete_and_exit+0x20/0x20\n  ? ret_from_fork+0x19/0x24\n\n[shorten subject, remove OCB, reorder cases to match previous list]","modified":"2026-10-28T02:31:00.019460185Z","published":"2024-10-21T18:01:57.730Z","related":["SUSE-SU-2024:3984-1","SUSE-SU-2024:3986-1","SUSE-SU-2024:4318-1","SUSE-SU-2024:4387-1","SUSE-SU-2025:20163-1","SUSE-SU-2025:20164-1","SUSE-SU-2025:20246-1","SUSE-SU-2025:20247-1","USN-7276-1","USN-7277-1","openSUSE-SU-2024:14500-1","openSUSE-SU-2025:14705-1"],"database_specific":{"cna_assigner":"Linux","osv_generated_from":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2024/49xxx/CVE-2024-49937.json"},"references":[{"type":"WEB","url":"https://git.kernel.org/stable/c/04053e55dd50741cf6c59b9bbaa4238218c05c70"},{"type":"WEB","url":"https://git.kernel.org/stable/c/20361712880396e44ce80aaeec2d93d182035651"},{"type":"WEB","url":"https://git.kernel.org/stable/c/95f32191e50b75e0f75fae1bb925cdf51d8df0a3"},{"type":"WEB","url":"https://git.kernel.org/stable/c/c628026563f4ea9e0413dd4b69429e4a1db240b1"},{"type":"WEB","url":"https://git.kernel.org/stable/c/f4dbfda159e43d49b43003cc3c2914751939035f"},{"type":"WEB","url":"https://lists.debian.org/debian-lts-announce/2025/01/msg00001.html"},{"type":"ADVISORY","url":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2024/49xxx/CVE-2024-49937.json"},{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2024-49937"},{"type":"PACKAGE","url":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git"}],"affected":[{"ranges":[{"type":"GIT","repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","events":[{"introduced":"7b0a0e3c3a88260b6fcb017e49f198463aa62ed1"},{"fixed":"95f32191e50b75e0f75fae1bb925cdf51d8df0a3"},{"fixed":"04053e55dd50741cf6c59b9bbaa4238218c05c70"},{"fixed":"f4dbfda159e43d49b43003cc3c2914751939035f"},{"fixed":"c628026563f4ea9e0413dd4b69429e4a1db240b1"},{"fixed":"20361712880396e44ce80aaeec2d93d182035651"}]},{"type":"GIT","repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","events":[{"introduced":"5.19.2"},{"fixed":"5.20"}]},{"type":"GIT","repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","events":[{"introduced":"7a53ad13c09150076b7ddde96c2dfc5622c90b45"}]}],"versions":["v5.19.17","v5.19.16","v5.19.15","v5.19.14","v5.19.13","v5.19.12","v5.19.11","v5.19.10","v5.19.9","v5.19.8","v5.19.7","v5.19.6","v5.19.5","v5.19.4","v5.19.3","v5.19.2"],"database_specific":{"source":"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2024-49937.json"}},{"package":{"name":"Kernel","ecosystem":"Linux"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"6.0.0"},{"fixed":"6.1.113"}]},{"type":"ECOSYSTEM","events":[{"introduced":"6.2.0"},{"fixed":"6.6.55"}]},{"type":"ECOSYSTEM","events":[{"introduced":"6.7.0"},{"fixed":"6.10.14"}]},{"type":"ECOSYSTEM","events":[{"introduced":"6.11.0"},{"fixed":"6.11.3"}]}],"database_specific":{"source":"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2024-49937.json"}}],"schema_version":"1.9.2"}