{"id":"CVE-2026-98326","state":"PUBLISHED","title":"wifi: mac80211: mesh: release the channel if start fails","description":"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.","publishedAt":"2026-10-06T08:46:19.534Z","updatedAt":"2026-10-19T09:17:36.726Z","severity":null,"assigner":"Linux","products":["Linux Linux"],"affected":[{"vendor":"Linux","product":"Linux","defaultStatus":"unaffected","versions":[{"version":"2b5e19677592c167d012c2d129407f39d2bdeb8d","status":"affected","lessThan":"f0afcec2129c166e61821d6ae097061155f01b12","versionType":"git"},{"version":"2b5e19677592c167d012c2d129407f39d2bdeb8d","status":"affected","lessThan":"b51f5a310bd6888b90bb9546a8081215dcfe6fbe","versionType":"git"},{"version":"2b5e19677592c167d012c2d129407f39d2bdeb8d","status":"affected","lessThan":"632f7acfe6dac1278a9314eaaab14fada400ddaf","versionType":"git"},{"version":"2b5e19677592c167d012c2d129407f39d2bdeb8d","status":"affected","lessThan":"41bee71112db53651ba9a9030de1b843255a4a7f","versionType":"git"},{"version":"2b5e19677592c167d012c2d129407f39d2bdeb8d","status":"affected","lessThan":"4a4e3fa77ea36d3419d806fb5883ef425a605a5d","versionType":"git"},{"version":"2b5e19677592c167d012c2d129407f39d2bdeb8d","status":"affected","lessThan":"ae97fff6495a8764bc0ef281cfe5444f701e527f","versionType":"git"}],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["net/mac80211/cfg.c"]},{"vendor":"Linux","product":"Linux","defaultStatus":"affected","versions":[{"version":"3.9","status":"affected"},{"version":"0","status":"unaffected","lessThan":"3.9","versionType":"semver"},{"version":"6.1.189","status":"unaffected","lessThanOrEqual":"6.1.*","versionType":"semver"},{"version":"6.6.158","status":"unaffected","lessThanOrEqual":"6.6.*","versionType":"semver"},{"version":"6.12.112","status":"unaffected","lessThanOrEqual":"6.12.*","versionType":"semver"},{"version":"6.18.54","status":"unaffected","lessThanOrEqual":"6.18.*","versionType":"semver"},{"version":"7.2.8","status":"unaffected","lessThanOrEqual":"7.2.*","versionType":"semver"},{"version":"7.3","status":"unaffected","lessThanOrEqual":"*","versionType":"original_commit_for_fix"}],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["net/mac80211/cfg.c"]}],"references":["https://git.kernel.org/stable/c/f0afcec2129c166e61821d6ae097061155f01b12","https://git.kernel.org/stable/c/b51f5a310bd6888b90bb9546a8081215dcfe6fbe","https://git.kernel.org/stable/c/632f7acfe6dac1278a9314eaaab14fada400ddaf","https://git.kernel.org/stable/c/41bee71112db53651ba9a9030de1b843255a4a7f","https://git.kernel.org/stable/c/4a4e3fa77ea36d3419d806fb5883ef425a605a5d","https://git.kernel.org/stable/c/ae97fff6495a8764bc0ef281cfe5444f701e527f"],"weaknesses":[],"ingestedAt":"2026-10-29T20:13:43.249Z","source":{"repository":"CVEProject/cvelistV5","path":"cves/2026/98xxx/CVE-2026-98326.json","commit":"556c9d3a8cd17e218bb8e452ba7cd619a384ff47"},"raw":{"dataType":"CVE_RECORD","dataVersion":"5.2","cveMetadata":{"cveId":"CVE-2026-98326","state":"PUBLISHED","datePublished":"2026-10-06T08:46:19.534Z","dateUpdated":"2026-10-19T09:17:36.726Z","assignerShortName":"Linux","assignerOrgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","dateReserved":"2026-09-25T10:25:14.340Z"},"containers":{"cna":{"title":"wifi: mac80211: mesh: release the channel if start fails","descriptions":[{"lang":"en","value":"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."}],"affected":[{"vendor":"Linux","product":"Linux","defaultStatus":"unaffected","versions":[{"version":"2b5e19677592c167d012c2d129407f39d2bdeb8d","status":"affected","lessThan":"f0afcec2129c166e61821d6ae097061155f01b12","versionType":"git"},{"version":"2b5e19677592c167d012c2d129407f39d2bdeb8d","status":"affected","lessThan":"b51f5a310bd6888b90bb9546a8081215dcfe6fbe","versionType":"git"},{"version":"2b5e19677592c167d012c2d129407f39d2bdeb8d","status":"affected","lessThan":"632f7acfe6dac1278a9314eaaab14fada400ddaf","versionType":"git"},{"version":"2b5e19677592c167d012c2d129407f39d2bdeb8d","status":"affected","lessThan":"41bee71112db53651ba9a9030de1b843255a4a7f","versionType":"git"},{"version":"2b5e19677592c167d012c2d129407f39d2bdeb8d","status":"affected","lessThan":"4a4e3fa77ea36d3419d806fb5883ef425a605a5d","versionType":"git"},{"version":"2b5e19677592c167d012c2d129407f39d2bdeb8d","status":"affected","lessThan":"ae97fff6495a8764bc0ef281cfe5444f701e527f","versionType":"git"}],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["net/mac80211/cfg.c"]},{"vendor":"Linux","product":"Linux","defaultStatus":"affected","versions":[{"version":"3.9","status":"affected"},{"version":"0","status":"unaffected","lessThan":"3.9","versionType":"semver"},{"version":"6.1.189","status":"unaffected","lessThanOrEqual":"6.1.*","versionType":"semver"},{"version":"6.6.158","status":"unaffected","lessThanOrEqual":"6.6.*","versionType":"semver"},{"version":"6.12.112","status":"unaffected","lessThanOrEqual":"6.12.*","versionType":"semver"},{"version":"6.18.54","status":"unaffected","lessThanOrEqual":"6.18.*","versionType":"semver"},{"version":"7.2.8","status":"unaffected","lessThanOrEqual":"7.2.*","versionType":"semver"},{"version":"7.3","status":"unaffected","lessThanOrEqual":"*","versionType":"original_commit_for_fix"}],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["net/mac80211/cfg.c"]}],"references":[{"url":"https://git.kernel.org/stable/c/f0afcec2129c166e61821d6ae097061155f01b12"},{"url":"https://git.kernel.org/stable/c/b51f5a310bd6888b90bb9546a8081215dcfe6fbe"},{"url":"https://git.kernel.org/stable/c/632f7acfe6dac1278a9314eaaab14fada400ddaf"},{"url":"https://git.kernel.org/stable/c/41bee71112db53651ba9a9030de1b843255a4a7f"},{"url":"https://git.kernel.org/stable/c/4a4e3fa77ea36d3419d806fb5883ef425a605a5d"},{"url":"https://git.kernel.org/stable/c/ae97fff6495a8764bc0ef281cfe5444f701e527f"}],"providerMetadata":{"shortName":"Linux","orgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","dateUpdated":"2026-10-19T09:17:36.726Z"},"cpeApplicability":[{"nodes":[{"operator":"OR","negate":false,"cpeMatch":[{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"3.9","versionEndExcluding":"6.1.189"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"3.9","versionEndExcluding":"6.6.158"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"3.9","versionEndExcluding":"6.12.112"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"3.9","versionEndExcluding":"6.18.54"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"3.9","versionEndExcluding":"7.2.8"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"3.9","versionEndExcluding":"7.3"}]}]}],"x_generator":{"engine":"bippy-1.2.0"}}}}}