{"id":"CVE-2026-98334","title":"In the Linux kernel, the following vulnerability has been resolved:\n\nwifi: mac80211: reset state when starting AP fails\n\nieee80211_start_ap() can set enable_beacon (and beacon_int) and fail\nlater, leaving it set forever","summary":"In the Linux kernel, the following vulnerability has been resolved:\n\nwifi: mac80211: reset state when starting AP fails\n\nieee80211_start_ap() can set enable_beacon (and beacon_int) and fail\nlater, leaving it set forever. Scanning can the…","severity":"medium","vendor":"Linux","product":"Linux","affected":["Linux >= d6a83228823fc0cc8d79d95c9f0bf568b7317862 < d83da43e9b3b3b1bad99ac5a1065f1c63ad5fc32","Linux >= d6a83228823fc0cc8d79d95c9f0bf568b7317862 < 5d5ff5b36f5748a2a077f875a73ccb26860d3fcc","Linux >= d6a83228823fc0cc8d79d95c9f0bf568b7317862 < 6eac225f59c1c2277ac74f8a716d6df0ba3b8d28","Linux >= d6a83228823fc0cc8d79d95c9f0bf568b7317862 < 3f28551d0241254a75626d868041c6340285088b","Linux 3.9"],"published":"2026-10-06","updated":"2026-10-06","sourceUpdated":"2026-10-06T09:18:25.903","source":"NVD","sourceUrl":"https://nvd.nist.gov/vuln/detail/CVE-2026-98334","references":[{"url":"https://git.kernel.org/stable/c/3f28551d0241254a75626d868041c6340285088b","label":"416baaa9-dc9f-4396-8d5f-8c081fb06d67"},{"url":"https://git.kernel.org/stable/c/5d5ff5b36f5748a2a077f875a73ccb26860d3fcc","label":"416baaa9-dc9f-4396-8d5f-8c081fb06d67"},{"url":"https://git.kernel.org/stable/c/6eac225f59c1c2277ac74f8a716d6df0ba3b8d28","label":"416baaa9-dc9f-4396-8d5f-8c081fb06d67"},{"url":"https://git.kernel.org/stable/c/d83da43e9b3b3b1bad99ac5a1065f1c63ad5fc32","label":"416baaa9-dc9f-4396-8d5f-8c081fb06d67"},{"url":"https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-98334.json"},{"url":"https://access.redhat.com/security/cve/CVE-2026-98334"},{"url":"https://bugzilla.redhat.com/show_bug.cgi?id=2546442"},{"url":"https://www.cve.org/CVERecord?id=CVE-2026-98334"},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2026-98334"},{"url":"https://git.kernel.org/pub/scm/linux/security/vulns.git/plain/cve/published/2026/CVE-2026-98334.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-369"],"epss":0.00175,"epssPercentile":0.06997,"slug":"CVE-2026-98334","body":"## Overview\n\nIn the Linux kernel, the following vulnerability has been resolved:\n\nwifi: mac80211: reset state when starting AP fails\n\nieee80211_start_ap() can set enable_beacon (and beacon_int) and fail\nlater, leaving it set forever. Scanning can then attempt to restore\nbeaconing on such an interface, leading to:\n\n  Oops: divide error: 0000 [#1] SMP KASAN NOPTI\n  RIP: 0010:mac80211_hwsim_link_info_changed+0xca7/0xf00\n  Call Trace:\n   drv_link_info_changed+0x413/0x860 net/mac80211/driver-ops.c:495\n   ieee80211_link_info_change_notify+0x24b/0x3c0 net/mac80211/main.c:427\n   ieee80211_offchannel_return+0x381/0x580 net/mac80211/offchannel.c:160\n   __ieee80211_scan_completed+0x993/0xe30 net/mac80211/scan.c:519\n   ieee80211_scan_work+0x472/0x2010 net/mac80211/scan.c:1193\n   cfg80211_wiphy_work+0x2b7/0x550 net/wireless/core.c:538\n\nin hwsim. Also, cfg80211 then allows changing the interface type,\nand the off-channel path getgs confused about beaconing as well,\nleading to another warning:\n\n  WARNING: net/mac80211/driver-ops.c:468 at drv_link_info_changed+0x583/0x880\n   ieee80211_link_info_change_notify+0x24b/0x3c0 net/mac80211/main.c:427\n   ieee80211_offchannel_stop_vifs+0x328/0x5c0 net/mac80211/offchannel.c:122\n   ieee80211_start_sw_scan net/mac80211/scan.c:583 [inline]\n   __ieee80211_start_scan+0xfb6/0x1af0 net/mac80211/scan.c:882\n\nReset the state on failures to always have it correct.\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 2026-10-18 · [vex](https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-98334.json)","depth":"sunlit","depthScore":30,"depthScoreParts":{"impact":30.3,"likelihood":0,"exploitation":0,"ransomware":0},"changes":[{"seq":219149,"id":"CVE-2026-98334","ts":1791707075431,"field":"cvss","old":null,"new":"5.5"},{"seq":219148,"id":"CVE-2026-98334","ts":1791707075431,"field":"severity","old":"none","new":"medium"}]}