{"schema":"threatline.record/2","record":{"id":"CVE-2026-98192","aliases":[],"summary":"wifi: wcn36xx: Fix potential use-after-free in TX ack timer teardown","details":"In the Linux kernel, the following vulnerability has been resolved:\n\nwifi: wcn36xx: Fix potential use-after-free in TX ack timer teardown\n\nwcn36xx_dxe_deinit() tears down the TX ack timer with timer_delete(),\nwhich only dequeues the timer and does not wait for a callback that is\nalready executing; the preceding free_irq() calls synchronize the\ninterrupt handlers only. The callback, wcn36xx_dxe_tx_timer(), can\ntherefore be running past the teardown and use the wcn freed along\nwith the ieee80211_hw in wcn36xx_remove(): it takes wcn->dxe_lock,\nreads wcn->tx_ack_skb and passes wcn->hw to\nieee80211_tx_status_irqsafe().\n\nFix this by using timer_shutdown_sync(), which waits for a running\ncallback and also prevents the timer from being rearmed again. The\ntimer is set up again by wcn36xx_dxe_init() on the next start, so the\nstart/stop cycle is unaffected.\n\nThis issue was found by an in-house static analysis tool.","categories":["Operating systems"],"product":"Linux","vendor":"Linux","ecosystem":null,"affected_ranges":[{"source":"CVE List","source_url":"https://www.cve.org/CVERecord?id=CVE-2026-98192","source_modified_at":"2026-10-21T12:54:50.525Z","fetched_at":"2026-10-23T18:45:31.882637Z","product":"Linux","vendor":"Linux","versions":[{"version":"fdf21cc3714939dd4327f3d664fe5863d15ccb31","lessThan":"15e59e377facc87ce82228279d88efaa89fdbca5","status":"affected","versionType":"git"},{"version":"fdf21cc3714939dd4327f3d664fe5863d15ccb31","lessThan":"3edabc965bcce49cbb2ec1c2b91f8a555a8ec8bd","status":"affected","versionType":"git"},{"version":"fdf21cc3714939dd4327f3d664fe5863d15ccb31","lessThan":"2bddc5d088cf430ecd913020472f1def32a36a3d","status":"affected","versionType":"git"},{"version":"fdf21cc3714939dd4327f3d664fe5863d15ccb31","lessThan":"c0df0878e9110909cf0bec6080d72d36401a0c89","status":"affected","versionType":"git"},{"version":"fdf21cc3714939dd4327f3d664fe5863d15ccb31","lessThan":"d9be5e75530772fc31637070d51e5717d6aeaa2a","status":"affected","versionType":"git"}],"defaultStatus":"unaffected"},{"source":"CVE List","source_url":"https://www.cve.org/CVERecord?id=CVE-2026-98192","source_modified_at":"2026-10-21T12:54:50.525Z","fetched_at":"2026-10-23T18:45:31.882637Z","product":"Linux","vendor":"Linux","versions":[{"version":"5.10","status":"affected"},{"version":"0","lessThan":"5.10","status":"unaffected","versionType":"semver"},{"version":"6.6.160","lessThanOrEqual":"6.6.*","status":"unaffected","versionType":"semver"},{"version":"6.12.112","lessThanOrEqual":"6.12.*","status":"unaffected","versionType":"semver"},{"version":"6.18.54","lessThanOrEqual":"6.18.*","status":"unaffected","versionType":"semver"},{"version":"7.2.8","lessThanOrEqual":"7.2.*","status":"unaffected","versionType":"semver"},{"version":"7.3","lessThanOrEqual":"*","status":"unaffected","versionType":"original_commit_for_fix"}],"defaultStatus":"affected"}],"fixed_versions":[{"source":"CVE List","source_url":"https://www.cve.org/CVERecord?id=CVE-2026-98192","source_modified_at":"2026-10-21T12:54:50.525Z","fetched_at":"2026-10-23T18:45:31.882637Z","package":{"name":"Linux","ecosystem":null},"version":"15e59e377facc87ce82228279d88efaa89fdbca5","basis":"first unaffected version stated in the CVE record"},{"source":"CVE List","source_url":"https://www.cve.org/CVERecord?id=CVE-2026-98192","source_modified_at":"2026-10-21T12:54:50.525Z","fetched_at":"2026-10-23T18:45:31.882637Z","package":{"name":"Linux","ecosystem":null},"version":"3edabc965bcce49cbb2ec1c2b91f8a555a8ec8bd","basis":"first unaffected version stated in the CVE record"},{"source":"CVE List","source_url":"https://www.cve.org/CVERecord?id=CVE-2026-98192","source_modified_at":"2026-10-21T12:54:50.525Z","fetched_at":"2026-10-23T18:45:31.882637Z","package":{"name":"Linux","ecosystem":null},"version":"2bddc5d088cf430ecd913020472f1def32a36a3d","basis":"first unaffected version stated in the CVE record"}],"cvss":null,"severity":null,"kev":{"listed":false},"epss":{"probability":0.00175,"percentile":0.06675,"score_date":"2026-10-23"},"published_at":"2026-10-06T08:44:32.912Z","modified_at":"2026-10-21T12:54:50.525Z","provenance":[{"source":"CVE List","url":"https://www.cve.org/CVERecord?id=CVE-2026-98192","fetched_at":"2026-10-23T18:45:31.882637Z","source_modified_at":"2026-10-21T12:54:50.525Z"},{"source":"EPSS","url":"https://api.first.org/data/v1/epss?cve=CVE-2026-98192","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/15e59e377facc87ce82228279d88efaa89fdbca5"},{"source":"CVE List","url":"https://git.kernel.org/stable/c/3edabc965bcce49cbb2ec1c2b91f8a555a8ec8bd"},{"source":"CVE List","url":"https://git.kernel.org/stable/c/2bddc5d088cf430ecd913020472f1def32a36a3d"},{"source":"CVE List","url":"https://git.kernel.org/stable/c/c0df0878e9110909cf0bec6080d72d36401a0c89"},{"source":"CVE List","url":"https://git.kernel.org/stable/c/d9be5e75530772fc31637070d51e5717d6aeaa2a"}],"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":"2026-10-21T12:54:50.525Z","content_hash":"096ef45286654c4a6b0618fd0066e7e5f45a4486660a705b1e3ee82794df59f2"}}