{"id":"CVE-2026-98326","summary":"wifi: mac80211: mesh: release the channel if start fails","details":"In the Linux kernel, the following vulnerability has been resolved:\n\nwifi: mac80211: mesh: release the channel if start fails\n\nieee80211_join_mesh() acquires a channel context and then calls\nieee80211_start_mesh(), which can fail. In that case, the chanctx\nisn't released then interface removal will attempt to unassign it\nafter it's removed from the driver, hitting:\n\n  wlan0: Failed check-sdata-in-driver check, flags: 0x0\n  WARNING: net/mac80211/driver-ops.c:366 at drv_unassign_vif_chanctx\n   ieee80211_assign_link_chanctx\n   __ieee80211_link_release_channel\n   ieee80211_link_release_channel\n   ieee80211_teardown_sdata\n   unregister_netdevice_many_notify\n   _cfg80211_unregister_wdev\n   ieee80211_remove_interfaces\n   ieee80211_unregister_hw\n   mac80211_hwsim_del_radio\n   hwsim_exit_net\n\nCorrectly release the channel on start failures.","modified":"2026-10-08T02:52:57.941875302Z","published":"2026-10-06T08:46:19.534Z","database_specific":{"cna_assigner":"Linux","osv_generated_from":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/98xxx/CVE-2026-98326.json"},"references":[{"type":"WEB","url":"https://git.kernel.org/stable/c/41bee71112db53651ba9a9030de1b843255a4a7f"},{"type":"WEB","url":"https://git.kernel.org/stable/c/4a4e3fa77ea36d3419d806fb5883ef425a605a5d"},{"type":"WEB","url":"https://git.kernel.org/stable/c/632f7acfe6dac1278a9314eaaab14fada400ddaf"},{"type":"WEB","url":"https://git.kernel.org/stable/c/ae97fff6495a8764bc0ef281cfe5444f701e527f"},{"type":"WEB","url":"https://git.kernel.org/stable/c/b51f5a310bd6888b90bb9546a8081215dcfe6fbe"},{"type":"WEB","url":"https://git.kernel.org/stable/c/f0afcec2129c166e61821d6ae097061155f01b12"},{"type":"ADVISORY","url":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/98xxx/CVE-2026-98326.json"},{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-98326"},{"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":"2b5e19677592c167d012c2d129407f39d2bdeb8d"},{"fixed":"f0afcec2129c166e61821d6ae097061155f01b12"},{"fixed":"b51f5a310bd6888b90bb9546a8081215dcfe6fbe"},{"fixed":"632f7acfe6dac1278a9314eaaab14fada400ddaf"},{"fixed":"41bee71112db53651ba9a9030de1b843255a4a7f"},{"fixed":"4a4e3fa77ea36d3419d806fb5883ef425a605a5d"},{"fixed":"ae97fff6495a8764bc0ef281cfe5444f701e527f"}]}],"database_specific":{"source":"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-98326.json"}},{"package":{"name":"Kernel","ecosystem":"Linux"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"3.9.0"},{"fixed":"6.1.189"}]},{"type":"ECOSYSTEM","events":[{"introduced":"6.2.0"},{"fixed":"6.6.158"}]},{"type":"ECOSYSTEM","events":[{"introduced":"6.7.0"},{"fixed":"6.12.112"}]},{"type":"ECOSYSTEM","events":[{"introduced":"6.13.0"},{"fixed":"6.18.54"}]},{"type":"ECOSYSTEM","events":[{"introduced":"6.19.0"},{"fixed":"7.2.8"}]}],"database_specific":{"source":"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-98326.json"}}],"schema_version":"1.9.0"}