{"id":"CVE-2026-98326","title":"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","summary":"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 tha…","severity":"medium","vendor":"Linux","product":"Linux","affected":["Linux >= 2b5e19677592c167d012c2d129407f39d2bdeb8d < f0afcec2129c166e61821d6ae097061155f01b12","Linux >= 2b5e19677592c167d012c2d129407f39d2bdeb8d < b51f5a310bd6888b90bb9546a8081215dcfe6fbe","Linux >= 2b5e19677592c167d012c2d129407f39d2bdeb8d < 632f7acfe6dac1278a9314eaaab14fada400ddaf","Linux >= 2b5e19677592c167d012c2d129407f39d2bdeb8d < 41bee71112db53651ba9a9030de1b843255a4a7f","Linux >= 2b5e19677592c167d012c2d129407f39d2bdeb8d < 4a4e3fa77ea36d3419d806fb5883ef425a605a5d","Linux >= 2b5e19677592c167d012c2d129407f39d2bdeb8d < ae97fff6495a8764bc0ef281cfe5444f701e527f","Linux 3.9"],"published":"2026-10-06","updated":"2026-10-06","sourceUpdated":"2026-10-06T09:18:24.840","source":"NVD","sourceUrl":"https://nvd.nist.gov/vuln/detail/CVE-2026-98326","references":[{"url":"https://git.kernel.org/stable/c/41bee71112db53651ba9a9030de1b843255a4a7f","label":"416baaa9-dc9f-4396-8d5f-8c081fb06d67"},{"url":"https://git.kernel.org/stable/c/4a4e3fa77ea36d3419d806fb5883ef425a605a5d","label":"416baaa9-dc9f-4396-8d5f-8c081fb06d67"},{"url":"https://git.kernel.org/stable/c/632f7acfe6dac1278a9314eaaab14fada400ddaf","label":"416baaa9-dc9f-4396-8d5f-8c081fb06d67"},{"url":"https://git.kernel.org/stable/c/ae97fff6495a8764bc0ef281cfe5444f701e527f","label":"416baaa9-dc9f-4396-8d5f-8c081fb06d67"},{"url":"https://git.kernel.org/stable/c/b51f5a310bd6888b90bb9546a8081215dcfe6fbe","label":"416baaa9-dc9f-4396-8d5f-8c081fb06d67"},{"url":"https://git.kernel.org/stable/c/f0afcec2129c166e61821d6ae097061155f01b12","label":"416baaa9-dc9f-4396-8d5f-8c081fb06d67"},{"url":"https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-98326.json"},{"url":"https://access.redhat.com/security/cve/CVE-2026-98326"},{"url":"https://bugzilla.redhat.com/show_bug.cgi?id=2546523"},{"url":"https://www.cve.org/CVERecord?id=CVE-2026-98326"},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2026-98326"},{"url":"https://git.kernel.org/pub/scm/linux/security/vulns.git/plain/cve/published/2026/CVE-2026-98326.mbox"}],"tags":["nvd","cve.org","csaf","vex","red-hat"],"ingestedAt":"2026-10-06T08:50:17.405Z","cvss":5.5,"cvssVector":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H","cvssSource":"vendor","cwe":["CWE-772"],"epss":0.0018,"epssPercentile":0.07536,"slug":"CVE-2026-98326","body":"## Overview\n\nIn 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.\n\n## Remediation\n\nRefer to the linked advisories for vendor-supplied fixes and affected version ranges.\n\n## Vendor advisories\n\n- **Red Hat VEX** · Low · affected: Red Hat Enterprise Linux 10, Red Hat Enterprise Linux 6, Red Hat Enterprise Linux 7, Red Hat Enterprise Linux 8, Red Hat Enterprise Linux 9, Red Hat OpenShift Container Platform 4 · no fix planned: Red Hat Enterprise Linux 6, Red Hat Enterprise Linux 10, Red Hat Enterprise Linux 7, Red Hat Enterprise Linux 8, … · updated 2026-10-09 · [vex](https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-98326.json)","depth":"sunlit","depthScore":30,"depthScoreParts":{"impact":30.3,"likelihood":0,"exploitation":0,"ransomware":0},"changes":[{"seq":218430,"id":"CVE-2026-98326","ts":1791533724886,"field":"cvss","old":null,"new":"5.5"},{"seq":218429,"id":"CVE-2026-98326","ts":1791533724886,"field":"severity","old":"none","new":"medium"}]}