{"id":"CVE-2026-98334","summary":"wifi: mac80211: reset state when starting AP fails","details":"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 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.","modified":"2026-10-08T02:52:57.312568812Z","published":"2026-10-06T08:46:25.992Z","database_specific":{"cna_assigner":"Linux","osv_generated_from":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/98xxx/CVE-2026-98334.json"},"references":[{"type":"WEB","url":"https://git.kernel.org/stable/c/3f28551d0241254a75626d868041c6340285088b"},{"type":"WEB","url":"https://git.kernel.org/stable/c/5d5ff5b36f5748a2a077f875a73ccb26860d3fcc"},{"type":"WEB","url":"https://git.kernel.org/stable/c/6eac225f59c1c2277ac74f8a716d6df0ba3b8d28"},{"type":"WEB","url":"https://git.kernel.org/stable/c/d83da43e9b3b3b1bad99ac5a1065f1c63ad5fc32"},{"type":"ADVISORY","url":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/98xxx/CVE-2026-98334.json"},{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-98334"},{"type":"PACKAGE","url":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git"}],"affected":[{"ranges":[{"type":"GIT","repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","events":[{"introduced":"d6a83228823fc0cc8d79d95c9f0bf568b7317862"},{"fixed":"d83da43e9b3b3b1bad99ac5a1065f1c63ad5fc32"},{"fixed":"5d5ff5b36f5748a2a077f875a73ccb26860d3fcc"},{"fixed":"6eac225f59c1c2277ac74f8a716d6df0ba3b8d28"},{"fixed":"3f28551d0241254a75626d868041c6340285088b"}]}],"database_specific":{"source":"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-98334.json"}},{"package":{"name":"Kernel","ecosystem":"Linux"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"3.9.0"},{"fixed":"6.12.112"}]},{"type":"ECOSYSTEM","events":[{"introduced":"6.13.0"},{"fixed":"6.18.54"}]},{"type":"ECOSYSTEM","events":[{"introduced":"6.19.0"},{"fixed":"7.2.8"}]}],"database_specific":{"source":"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-98334.json"}}],"schema_version":"1.9.0"}