{"schema":"threatline.record/2","record":{"id":"CVE-2026-98747","aliases":[],"summary":"serial: core: fix NULL pointer dereference in serial_core_unregister_port()","details":"In the Linux kernel, the following vulnerability has been resolved:\n\nserial: core: fix NULL pointer dereference in serial_core_unregister_port()\n\nport->port_dev is NULL when no port device is installed: it is cleared\non teardown, and never set if registration failed before\nserial_core_port_device_add().  serial_core_unregister_port() passes it\nstraight to serial_core_get_ctrl_dev(), which dereferences it:\n\n  KASAN: null-ptr-deref in range [0x0000000000000040-0x0000000000000047]\n  RIP: serial_core_unregister_port\n  Call Trace:\n   serial8250_unregister_port\n   serial8250_remove\n   unbind_store\n\nReturn early when there is no port device, and read port->port_dev\nunder port_mutex.\n\nAlso clear port->port_dev on the serial_core_register_port() error\npath, where the port device has already been removed.","categories":["Operating systems"],"product":"Linux","vendor":"Linux","ecosystem":null,"affected_ranges":[{"source":"CVE List","source_url":"https://www.cve.org/CVERecord?id=CVE-2026-98747","source_modified_at":"2026-10-19T09:24:59.721Z","fetched_at":"2026-10-23T18:45:31.882637Z","product":"Linux","vendor":"Linux","versions":[{"version":"84a9582fd203063cd4d301204971ff2cd8327f1a","lessThan":"54abbb862366dcaf1f22f1e968358147b7d0547d","status":"affected","versionType":"git"},{"version":"84a9582fd203063cd4d301204971ff2cd8327f1a","lessThan":"499485a67fbacf4d9afbdb43522388c64f853428","status":"affected","versionType":"git"}],"defaultStatus":"unaffected"},{"source":"CVE List","source_url":"https://www.cve.org/CVERecord?id=CVE-2026-98747","source_modified_at":"2026-10-19T09:24:59.721Z","fetched_at":"2026-10-23T18:45:31.882637Z","product":"Linux","vendor":"Linux","versions":[{"version":"6.5","status":"affected"},{"version":"0","lessThan":"6.5","status":"unaffected","versionType":"semver"},{"version":"7.2.10","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-2026-98747","source_modified_at":"2026-10-19T09:24:59.721Z","fetched_at":"2026-10-23T18:45:31.882637Z","package":{"name":"Linux","ecosystem":null},"version":"54abbb862366dcaf1f22f1e968358147b7d0547d","basis":"first unaffected version stated in the CVE record"},{"source":"CVE List","source_url":"https://www.cve.org/CVERecord?id=CVE-2026-98747","source_modified_at":"2026-10-19T09:24:59.721Z","fetched_at":"2026-10-23T18:45:31.882637Z","package":{"name":"Linux","ecosystem":null},"version":"499485a67fbacf4d9afbdb43522388c64f853428","basis":"first unaffected version stated in the CVE record"}],"cvss":null,"severity":null,"kev":{"listed":false},"epss":{"probability":0.00155,"percentile":0.04322,"score_date":"2026-10-23"},"published_at":"2026-10-18T15:47:32.607Z","modified_at":"2026-10-19T09:24:59.721Z","provenance":[{"source":"CVE List","url":"https://www.cve.org/CVERecord?id=CVE-2026-98747","fetched_at":"2026-10-23T18:45:31.882637Z","source_modified_at":"2026-10-19T09:24:59.721Z"},{"source":"EPSS","url":"https://api.first.org/data/v1/epss?cve=CVE-2026-98747","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/54abbb862366dcaf1f22f1e968358147b7d0547d"},{"source":"CVE List","url":"https://git.kernel.org/stable/c/499485a67fbacf4d9afbdb43522388c64f853428"}],"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":"2026-10-19T09:24:59.721Z","content_hash":"80aa69e032d5f71af03121757dff154fa8d32e17c654c58429313eed50a52e6c"}}