{"id":"CVE-2026-93804","aliases":[],"cve":{"records":[{"id":"CVE-2026-93804","source":"Linux","state":"PUBLISHED","reasons":[],"replacements":[],"disputed":false,"unsupportedWhenAssigned":false,"reserved":"2026-09-18T17:59:28.790Z","published":"2026-09-24T16:02:38.223Z","modified":"2026-10-30T12:36:48.169Z"}],"publishers":[{"name":"Linux","role":"CNA","organizationId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","modified":"2026-10-30T12:36:48.169Z"}],"references":[{"url":"https://git.kernel.org/stable/c/47185b5dbac264e7eb48c6d44368be6bfec17085","tags":[],"source":"Linux"},{"url":"https://git.kernel.org/stable/c/8e4a07ed82bae5d13525770880dc6dfd27f9bccd","tags":[],"source":"Linux"},{"url":"https://git.kernel.org/stable/c/20a3fb5e1a95caa34896853ca17a50d21c754969","tags":[],"source":"Linux"},{"url":"https://git.kernel.org/stable/c/b3451e6971248250312ad32dd7f63cc9f0a925f5","tags":[],"source":"Linux"},{"url":"https://git.kernel.org/stable/c/d0e69d9afa59b93c30294eba89b1f15f69e91105","tags":[],"source":"Linux"}],"weaknesses":[],"applicability":[{"source":"Linux","statements":[{"nodes":[{"operator":"OR","negate":false,"cpeMatch":[{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"3.3","versionEndExcluding":"6.1.191"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"3.3","versionEndExcluding":"6.6.160"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"3.3","versionEndExcluding":"6.12.111"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"3.3","versionEndExcluding":"6.18.53"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"3.3","versionEndExcluding":"7.2"}]}]}]}],"prioritization":[]},"title":"wifi: mac80211: ibss: wait for in-flight TX on disconnect","titleSource":"Linux","descriptionSource":"Linux","description":"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.","score":null,"severity":"unknown","published":"2026-09-24T16:02:38.223Z","modified":"2026-10-30T12:36:48.169Z","withdrawn":false,"knownExploited":false,"affected":[],"products":[{"vendor":"Linux","name":"Linux","platforms":[],"versions":[{"version":"86a2ea4134b48f6371103cfceb521bf2d2bf76cd","status":"affected","lessThan":"47185b5dbac264e7eb48c6d44368be6bfec17085","versionType":"git"},{"version":"86a2ea4134b48f6371103cfceb521bf2d2bf76cd","status":"affected","lessThan":"8e4a07ed82bae5d13525770880dc6dfd27f9bccd","versionType":"git"},{"version":"86a2ea4134b48f6371103cfceb521bf2d2bf76cd","status":"affected","lessThan":"20a3fb5e1a95caa34896853ca17a50d21c754969","versionType":"git"},{"version":"86a2ea4134b48f6371103cfceb521bf2d2bf76cd","status":"affected","lessThan":"b3451e6971248250312ad32dd7f63cc9f0a925f5","versionType":"git"},{"version":"86a2ea4134b48f6371103cfceb521bf2d2bf76cd","status":"affected","lessThan":"d0e69d9afa59b93c30294eba89b1f15f69e91105","versionType":"git"}],"defaultStatus":"unaffected","cpes":[],"source":"Linux","url":"https://www.cve.org/CVERecord?id=CVE-2026-93804"},{"vendor":"Linux","name":"Linux","platforms":[],"versions":[{"version":"3.3","status":"affected"},{"version":"0","status":"unaffected","lessThan":"3.3","versionType":"semver"},{"version":"6.1.191","status":"unaffected","lessThanOrEqual":"6.1.*","versionType":"semver"},{"version":"6.6.160","status":"unaffected","lessThanOrEqual":"6.6.*","versionType":"semver"},{"version":"6.12.111","status":"unaffected","lessThanOrEqual":"6.12.*","versionType":"semver"},{"version":"6.18.53","status":"unaffected","lessThanOrEqual":"6.18.*","versionType":"semver"},{"version":"7.2","status":"unaffected","lessThanOrEqual":"*","versionType":"original_commit_for_fix"}],"defaultStatus":"affected","cpes":[],"source":"Linux","url":"https://www.cve.org/CVERecord?id=CVE-2026-93804"}],"remediation":[],"references":["https://git.kernel.org/stable/c/47185b5dbac264e7eb48c6d44368be6bfec17085","https://git.kernel.org/stable/c/8e4a07ed82bae5d13525770880dc6dfd27f9bccd","https://git.kernel.org/stable/c/20a3fb5e1a95caa34896853ca17a50d21c754969","https://git.kernel.org/stable/c/b3451e6971248250312ad32dd7f63cc9f0a925f5","https://git.kernel.org/stable/c/d0e69d9afa59b93c30294eba89b1f15f69e91105"],"sources":[{"name":"CVE","id":"CVE-2026-93804","modified":"2026-10-30T12:36:48.169Z","url":"https://www.cve.org/CVERecord?id=CVE-2026-93804"}],"assessments":[],"sourceAffected":[],"observedAt":"2026-10-30T13:56:11.319Z","kev":{"status":"not-listed","checkedAt":"2026-11-15T00:05:31.288Z"},"coverage":[{"source":"NVD","status":"not-checked"},{"source":"GHSA","status":"not-checked"},{"source":"EUVD","status":"not-checked"},{"source":"EPSS","status":"not-checked"}],"evidence":[],"aiSummary":null}