{"id":"CVE-2026-98334","state":"PUBLISHED","title":"wifi: mac80211: reset state when starting AP fails","description":"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.","publishedAt":"2026-10-06T08:46:25.992Z","updatedAt":"2026-10-19T09:17:45.494Z","severity":null,"assigner":"Linux","products":["Linux Linux"],"affected":[{"vendor":"Linux","product":"Linux","defaultStatus":"unaffected","versions":[{"version":"d6a83228823fc0cc8d79d95c9f0bf568b7317862","status":"affected","lessThan":"d83da43e9b3b3b1bad99ac5a1065f1c63ad5fc32","versionType":"git"},{"version":"d6a83228823fc0cc8d79d95c9f0bf568b7317862","status":"affected","lessThan":"5d5ff5b36f5748a2a077f875a73ccb26860d3fcc","versionType":"git"},{"version":"d6a83228823fc0cc8d79d95c9f0bf568b7317862","status":"affected","lessThan":"6eac225f59c1c2277ac74f8a716d6df0ba3b8d28","versionType":"git"},{"version":"d6a83228823fc0cc8d79d95c9f0bf568b7317862","status":"affected","lessThan":"3f28551d0241254a75626d868041c6340285088b","versionType":"git"}],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["net/mac80211/cfg.c"]},{"vendor":"Linux","product":"Linux","defaultStatus":"affected","versions":[{"version":"3.9","status":"affected"},{"version":"0","status":"unaffected","lessThan":"3.9","versionType":"semver"},{"version":"6.12.112","status":"unaffected","lessThanOrEqual":"6.12.*","versionType":"semver"},{"version":"6.18.54","status":"unaffected","lessThanOrEqual":"6.18.*","versionType":"semver"},{"version":"7.2.8","status":"unaffected","lessThanOrEqual":"7.2.*","versionType":"semver"},{"version":"7.3","status":"unaffected","lessThanOrEqual":"*","versionType":"original_commit_for_fix"}],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["net/mac80211/cfg.c"]}],"references":["https://git.kernel.org/stable/c/d83da43e9b3b3b1bad99ac5a1065f1c63ad5fc32","https://git.kernel.org/stable/c/5d5ff5b36f5748a2a077f875a73ccb26860d3fcc","https://git.kernel.org/stable/c/6eac225f59c1c2277ac74f8a716d6df0ba3b8d28","https://git.kernel.org/stable/c/3f28551d0241254a75626d868041c6340285088b"],"weaknesses":[],"ingestedAt":"2026-10-29T20:13:43.249Z","source":{"repository":"CVEProject/cvelistV5","path":"cves/2026/98xxx/CVE-2026-98334.json","commit":"556c9d3a8cd17e218bb8e452ba7cd619a384ff47"},"raw":{"dataType":"CVE_RECORD","dataVersion":"5.2","cveMetadata":{"cveId":"CVE-2026-98334","state":"PUBLISHED","datePublished":"2026-10-06T08:46:25.992Z","dateUpdated":"2026-10-19T09:17:45.494Z","assignerShortName":"Linux","assignerOrgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","dateReserved":"2026-09-25T10:25:14.341Z"},"containers":{"cna":{"title":"wifi: mac80211: reset state when starting AP fails","descriptions":[{"lang":"en","value":"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."}],"affected":[{"vendor":"Linux","product":"Linux","defaultStatus":"unaffected","versions":[{"version":"d6a83228823fc0cc8d79d95c9f0bf568b7317862","status":"affected","lessThan":"d83da43e9b3b3b1bad99ac5a1065f1c63ad5fc32","versionType":"git"},{"version":"d6a83228823fc0cc8d79d95c9f0bf568b7317862","status":"affected","lessThan":"5d5ff5b36f5748a2a077f875a73ccb26860d3fcc","versionType":"git"},{"version":"d6a83228823fc0cc8d79d95c9f0bf568b7317862","status":"affected","lessThan":"6eac225f59c1c2277ac74f8a716d6df0ba3b8d28","versionType":"git"},{"version":"d6a83228823fc0cc8d79d95c9f0bf568b7317862","status":"affected","lessThan":"3f28551d0241254a75626d868041c6340285088b","versionType":"git"}],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["net/mac80211/cfg.c"]},{"vendor":"Linux","product":"Linux","defaultStatus":"affected","versions":[{"version":"3.9","status":"affected"},{"version":"0","status":"unaffected","lessThan":"3.9","versionType":"semver"},{"version":"6.12.112","status":"unaffected","lessThanOrEqual":"6.12.*","versionType":"semver"},{"version":"6.18.54","status":"unaffected","lessThanOrEqual":"6.18.*","versionType":"semver"},{"version":"7.2.8","status":"unaffected","lessThanOrEqual":"7.2.*","versionType":"semver"},{"version":"7.3","status":"unaffected","lessThanOrEqual":"*","versionType":"original_commit_for_fix"}],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["net/mac80211/cfg.c"]}],"references":[{"url":"https://git.kernel.org/stable/c/d83da43e9b3b3b1bad99ac5a1065f1c63ad5fc32"},{"url":"https://git.kernel.org/stable/c/5d5ff5b36f5748a2a077f875a73ccb26860d3fcc"},{"url":"https://git.kernel.org/stable/c/6eac225f59c1c2277ac74f8a716d6df0ba3b8d28"},{"url":"https://git.kernel.org/stable/c/3f28551d0241254a75626d868041c6340285088b"}],"providerMetadata":{"shortName":"Linux","orgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","dateUpdated":"2026-10-19T09:17:45.494Z"},"cpeApplicability":[{"nodes":[{"operator":"OR","negate":false,"cpeMatch":[{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"3.9","versionEndExcluding":"6.12.112"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"3.9","versionEndExcluding":"6.18.54"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"3.9","versionEndExcluding":"7.2.8"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"3.9","versionEndExcluding":"7.3"}]}]}],"x_generator":{"engine":"bippy-1.2.0"}}}}}