{"id":"CVE-2026-98335","title":"In the Linux kernel, the following vulnerability has been resolved:\n\nwifi: mac80211: abort chanswitch when leaving a mesh\n\nThe code in ieee80211_stop_mesh() leaves CSA active, but leaving\nthe mesh released the channel context, so the CSA…","summary":"In the Linux kernel, the following vulnerability has been resolved:\n\nwifi: mac80211: abort chanswitch when leaving a mesh\n\nThe code in ieee80211_stop_mesh() leaves CSA active, but leaving\nthe mesh released the channel context, so the CSA…","severity":"medium","vendor":"Linux","product":"Linux","affected":["Linux >= b8456a14e9d2770846fcf74de18ff95b676149a3 < bc544ef02327edf61c94d2b6bae9d14b217009b2","Linux >= b8456a14e9d2770846fcf74de18ff95b676149a3 < 2e1d6e80148495e728a85a9250176f266312e55c","Linux >= b8456a14e9d2770846fcf74de18ff95b676149a3 < d222fdc973bb8dbf0357772bd9042ffdc8291939","Linux >= b8456a14e9d2770846fcf74de18ff95b676149a3 < ac7472a24bd433b81c06582835dd1d5547c10da9","Linux 3.13"],"published":"2026-10-06","updated":"2026-10-06","sourceUpdated":"2026-10-06T09:18:26.040","source":"NVD","sourceUrl":"https://nvd.nist.gov/vuln/detail/CVE-2026-98335","references":[{"url":"https://git.kernel.org/stable/c/2e1d6e80148495e728a85a9250176f266312e55c","label":"416baaa9-dc9f-4396-8d5f-8c081fb06d67"},{"url":"https://git.kernel.org/stable/c/ac7472a24bd433b81c06582835dd1d5547c10da9","label":"416baaa9-dc9f-4396-8d5f-8c081fb06d67"},{"url":"https://git.kernel.org/stable/c/bc544ef02327edf61c94d2b6bae9d14b217009b2","label":"416baaa9-dc9f-4396-8d5f-8c081fb06d67"},{"url":"https://git.kernel.org/stable/c/d222fdc973bb8dbf0357772bd9042ffdc8291939","label":"416baaa9-dc9f-4396-8d5f-8c081fb06d67"},{"url":"https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-98335.json"},{"url":"https://access.redhat.com/security/cve/CVE-2026-98335"},{"url":"https://bugzilla.redhat.com/show_bug.cgi?id=2546390"},{"url":"https://www.cve.org/CVERecord?id=CVE-2026-98335"},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2026-98335"},{"url":"https://git.kernel.org/pub/scm/linux/security/vulns.git/plain/cve/published/2026/CVE-2026-98335.mbox"}],"tags":["nvd","cve.org","csaf","vex","red-hat"],"ingestedAt":"2026-10-06T08:50:17.402Z","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-476"],"epss":0.00175,"epssPercentile":0.06997,"slug":"CVE-2026-98335","body":"## Overview\n\nIn the Linux kernel, the following vulnerability has been resolved:\n\nwifi: mac80211: abort chanswitch when leaving a mesh\n\nThe code in ieee80211_stop_mesh() leaves CSA active, but leaving\nthe mesh released the channel context, so the CSA finalize work\ncrashes:\n\n  Oops: general protection fault, probably for non-canonical address\n        0xdffffc0000000003\n  KASAN: null-ptr-deref in range [0x0000000000000018-0x000000000000001f]\n  RIP: 0010:ieee80211_put_srates_elem+0x42/0x640 net/mac80211/util.c:3272\n  Call Trace:\n   ieee80211_mesh_build_beacon+0xa83/0x1b50 net/mac80211/mesh.c:1093\n   ieee80211_mesh_rebuild_beacon+0xc7/0x170 net/mac80211/mesh.c:1147\n   ieee80211_mesh_finish_csa+0x131/0x210 net/mac80211/mesh.c:1542\n   ieee80211_set_after_csa_beacon net/mac80211/cfg.c:4085 [inline]\n   __ieee80211_csa_finalize net/mac80211/cfg.c:4133 [inline]\n   ieee80211_csa_finalize+0x633/0x1150 net/mac80211/cfg.c:4155\n   cfg80211_wiphy_work+0x2ab/0x450 net/wireless/core.c:438\n\nAbort the channel switch properly.\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-2026-98335.json)","depth":"sunlit","depthScore":30,"depthScoreParts":{"impact":30.3,"likelihood":0,"exploitation":0,"ransomware":0},"changes":[{"seq":219141,"id":"CVE-2026-98335","ts":1791707073724,"field":"cvss","old":null,"new":"5.5"},{"seq":219140,"id":"CVE-2026-98335","ts":1791707073724,"field":"severity","old":"none","new":"medium"}]}