{"schema":"threatline.record/2","record":{"id":"CVE-2026-93804","aliases":[],"summary":"wifi: mac80211: ibss: wait for in-flight TX on disconnect","details":"In the Linux kernel, the following vulnerability has been resolved:\n\nwifi: mac80211: ibss: wait for in-flight TX on disconnect\n\nWhile leaving an IBSS in ieee80211_ibss_disconnect() mac80211 flushes\nstations, turns the carrier off and immediately tells the driver to\nleave as well. While there may be synchronize_net() in station flush\nand in this code later, packets can still be transmitted due to\ncross-CPU race conditions after carrier off is set.\nTherefore, it's possible for a race to happen where a TX to the\ndriver occurs while or after telling it to leave the IBSS. This can\nbe confusing to drivers, and in the case of iwlwifi leads to an\nattempt to use invalid queues.\n\nMove netif_carrier_off() to occur before sta_info_flush() during\nIBSS disconnect, and add synchronize_net() if flushing didn't,\nso that the synchronize_net() always happens between turning the\ncarrier off and telling the driver, avoiding this race.","categories":["Operating systems"],"product":"Linux","vendor":"Linux","ecosystem":null,"affected_ranges":[{"source":"CVE List","source_url":"https://www.cve.org/CVERecord?id=CVE-2026-93804","source_modified_at":"2026-10-21T12:52:39.730Z","fetched_at":"2026-10-23T18:45:31.882637Z","product":"Linux","vendor":"Linux","versions":[{"version":"86a2ea4134b48f6371103cfceb521bf2d2bf76cd","lessThan":"8e4a07ed82bae5d13525770880dc6dfd27f9bccd","status":"affected","versionType":"git"},{"version":"86a2ea4134b48f6371103cfceb521bf2d2bf76cd","lessThan":"20a3fb5e1a95caa34896853ca17a50d21c754969","status":"affected","versionType":"git"},{"version":"86a2ea4134b48f6371103cfceb521bf2d2bf76cd","lessThan":"b3451e6971248250312ad32dd7f63cc9f0a925f5","status":"affected","versionType":"git"},{"version":"86a2ea4134b48f6371103cfceb521bf2d2bf76cd","lessThan":"d0e69d9afa59b93c30294eba89b1f15f69e91105","status":"affected","versionType":"git"}],"defaultStatus":"unaffected"},{"source":"CVE List","source_url":"https://www.cve.org/CVERecord?id=CVE-2026-93804","source_modified_at":"2026-10-21T12:52:39.730Z","fetched_at":"2026-10-23T18:45:31.882637Z","product":"Linux","vendor":"Linux","versions":[{"version":"3.3","status":"affected"},{"version":"0","lessThan":"3.3","status":"unaffected","versionType":"semver"},{"version":"6.6.160","lessThanOrEqual":"6.6.*","status":"unaffected","versionType":"semver"},{"version":"6.12.111","lessThanOrEqual":"6.12.*","status":"unaffected","versionType":"semver"},{"version":"6.18.53","lessThanOrEqual":"6.18.*","status":"unaffected","versionType":"semver"},{"version":"7.2","lessThanOrEqual":"*","status":"unaffected","versionType":"original_commit_for_fix"}],"defaultStatus":"affected"}],"fixed_versions":[{"source":"CVE List","source_url":"https://www.cve.org/CVERecord?id=CVE-2026-93804","source_modified_at":"2026-10-21T12:52:39.730Z","fetched_at":"2026-10-23T18:45:31.882637Z","package":{"name":"Linux","ecosystem":null},"version":"8e4a07ed82bae5d13525770880dc6dfd27f9bccd","basis":"first unaffected version stated in the CVE record"},{"source":"CVE List","source_url":"https://www.cve.org/CVERecord?id=CVE-2026-93804","source_modified_at":"2026-10-21T12:52:39.730Z","fetched_at":"2026-10-23T18:45:31.882637Z","package":{"name":"Linux","ecosystem":null},"version":"20a3fb5e1a95caa34896853ca17a50d21c754969","basis":"first unaffected version stated in the CVE record"}],"cvss":null,"severity":null,"kev":{"listed":false},"epss":{"probability":0.00168,"percentile":0.05795,"score_date":"2026-10-23"},"published_at":"2026-09-24T16:02:38.223Z","modified_at":"2026-10-21T12:52:39.730Z","provenance":[{"source":"CVE List","url":"https://www.cve.org/CVERecord?id=CVE-2026-93804","fetched_at":"2026-10-23T18:45:31.882637Z","source_modified_at":"2026-10-21T12:52:39.730Z"},{"source":"EPSS","url":"https://api.first.org/data/v1/epss?cve=CVE-2026-93804","fetched_at":"2026-10-23T18:42:43.628194Z","source_modified_at":"2026-10-23"}],"sources":["CVE List","EPSS"],"references":[{"source":"CVE List","url":"https://git.kernel.org/stable/c/8e4a07ed82bae5d13525770880dc6dfd27f9bccd"},{"source":"CVE List","url":"https://git.kernel.org/stable/c/20a3fb5e1a95caa34896853ca17a50d21c754969"},{"source":"CVE List","url":"https://git.kernel.org/stable/c/b3451e6971248250312ad32dd7f63cc9f0a925f5"},{"source":"CVE List","url":"https://git.kernel.org/stable/c/d0e69d9afa59b93c30294eba89b1f15f69e91105"}],"locations":[],"motoko_assessment":{"status":"requires_architecture_review","automatic_remediation":false},"cve_state":"PUBLISHED","classification":{"method":"product-first software-layer rules","rules_version":"2.1","matched_on":"product","confidence":"heuristic","reviewed":false},"change_timestamp":"2026-10-21T12:52:39.730Z","content_hash":"86ccf940f3c41362e82cd4435856fb393137e984897d5c33cc067e7929b33cf7"}}