{"id":"CVE-2026-98327","title":"In the Linux kernel, the following vulnerability has been resolved:\n\nwifi: mac80211: mesh: reset the CSA state when leaving\n\nifmsh->csa is allocated in ieee80211_mesh_csa_beacon() and only freed\nin ieee80211_mesh_finish_csa(), i.e","summary":"In the Linux kernel, the following vulnerability has been resolved:\n\nwifi: mac80211: mesh: reset the CSA state when leaving\n\nifmsh->csa is allocated in ieee80211_mesh_csa_beacon() and only freed\nin ieee80211_mesh_finish_csa(), i.e. when …","severity":"medium","vendor":"Linux","product":"Linux","affected":["Linux >= b8456a14e9d2770846fcf74de18ff95b676149a3 < aba8dfb45864441199748c33ce3c1c8ca121c8bd","Linux >= b8456a14e9d2770846fcf74de18ff95b676149a3 < bd3b21145ae2e781daac1bbd19216a63ab4e0cbd","Linux >= b8456a14e9d2770846fcf74de18ff95b676149a3 < ba5bf83a81e8832cb84bb3a2da67512f81f57a02","Linux >= b8456a14e9d2770846fcf74de18ff95b676149a3 < 860134b3af77970e006feab7e5decb8c84771c7f","Linux 3.13"],"published":"2026-10-06","updated":"2026-10-06","sourceUpdated":"2026-10-06T09:18:24.980","source":"NVD","sourceUrl":"https://nvd.nist.gov/vuln/detail/CVE-2026-98327","references":[{"url":"https://git.kernel.org/stable/c/860134b3af77970e006feab7e5decb8c84771c7f","label":"416baaa9-dc9f-4396-8d5f-8c081fb06d67"},{"url":"https://git.kernel.org/stable/c/aba8dfb45864441199748c33ce3c1c8ca121c8bd","label":"416baaa9-dc9f-4396-8d5f-8c081fb06d67"},{"url":"https://git.kernel.org/stable/c/ba5bf83a81e8832cb84bb3a2da67512f81f57a02","label":"416baaa9-dc9f-4396-8d5f-8c081fb06d67"},{"url":"https://git.kernel.org/stable/c/bd3b21145ae2e781daac1bbd19216a63ab4e0cbd","label":"416baaa9-dc9f-4396-8d5f-8c081fb06d67"},{"url":"https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-98327.json"},{"url":"https://access.redhat.com/security/cve/CVE-2026-98327"},{"url":"https://bugzilla.redhat.com/show_bug.cgi?id=2546365"},{"url":"https://www.cve.org/CVERecord?id=CVE-2026-98327"},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2026-98327"},{"url":"https://git.kernel.org/pub/scm/linux/security/vulns.git/plain/cve/published/2026/CVE-2026-98327.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":0.00175,"epssPercentile":0.06995,"slug":"CVE-2026-98327","body":"## Overview\n\nIn the Linux kernel, the following vulnerability has been resolved:\n\nwifi: mac80211: mesh: reset the CSA state when leaving\n\nifmsh->csa is allocated in ieee80211_mesh_csa_beacon() and only freed\nin ieee80211_mesh_finish_csa(), i.e. when the channel switch completes.\nLeaving the mesh while a switch is still pending therefore leaks it.\n\nAdditionally, ifmsh->csa_role and ifmsh->chsw_ttl have their state leak\nin this case, so things can get mixed up in addition to the memory\nleak.\n\nRefactor the reset and call it in ieee80211_stop_mesh() to fix it all.\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** · Moderate · updated 2026-10-10 · [vex](https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-98327.json)","depth":"sunlit","depthScore":30,"depthScoreParts":{"impact":30.3,"likelihood":0,"exploitation":0,"ransomware":0},"changes":[{"seq":219157,"id":"CVE-2026-98327","ts":1791707079372,"field":"cvss","old":null,"new":"5.5"},{"seq":219156,"id":"CVE-2026-98327","ts":1791707079372,"field":"severity","old":"none","new":"medium"}]}