{"schema":"threatline.record/2","record":{"id":"CVE-2026-98753","aliases":[],"summary":"tty: tty_port: restore TTY_IO_ERROR on activation failure","details":"In the Linux kernel, the following vulnerability has been resolved:\n\ntty: tty_port: restore TTY_IO_ERROR on activation failure\n\nMake sure to restore the TTY_IO_ERROR flag if activation fails to\nprevent I/O attempts on a port that is gone or powered down.\n\nThis specifically avoids issues like kernel panic due to unclocked\naccesses or NULL-pointer dereferences when accessing powered down or\nderegistered ports when a TTY ioctl races with hangup and open.\n\nNote that the flag is set again in tty_port_close() but not restoring it\non activation failure leaves a window where drivers fail to handle the\nioctl-hangup race.","categories":["Operating systems"],"product":"Linux","vendor":"Linux","ecosystem":null,"affected_ranges":[{"source":"CVE List","source_url":"https://www.cve.org/CVERecord?id=CVE-2026-98753","source_modified_at":"2026-10-21T12:56:28.904Z","fetched_at":"2026-10-23T18:45:31.882637Z","product":"Linux","vendor":"Linux","versions":[{"version":"a9a37ec33a1b3e66b260ac1c29bff0aec8b89ae4","lessThan":"16032c980d8f71642fcdc99309c571df3fcf3328","status":"affected","versionType":"git"},{"version":"a9a37ec33a1b3e66b260ac1c29bff0aec8b89ae4","lessThan":"34d4f67472ef7a744970b772a8565ddc727788e2","status":"affected","versionType":"git"},{"version":"a9a37ec33a1b3e66b260ac1c29bff0aec8b89ae4","lessThan":"7021acc84c2e0add77a1a33152e3a1e428fdbfdb","status":"affected","versionType":"git"},{"version":"a9a37ec33a1b3e66b260ac1c29bff0aec8b89ae4","lessThan":"6388409b711eb91b14fa075a4d861ccc4df1cfe7","status":"affected","versionType":"git"},{"version":"a9a37ec33a1b3e66b260ac1c29bff0aec8b89ae4","lessThan":"56964f6a31238fb41d5830bb42520c5b10ff7d8f","status":"affected","versionType":"git"}],"defaultStatus":"unaffected"},{"source":"CVE List","source_url":"https://www.cve.org/CVERecord?id=CVE-2026-98753","source_modified_at":"2026-10-21T12:56:28.904Z","fetched_at":"2026-10-23T18:45:31.882637Z","product":"Linux","vendor":"Linux","versions":[{"version":"2.6.33","status":"affected"},{"version":"0","lessThan":"2.6.33","status":"unaffected","versionType":"semver"},{"version":"6.6.160","lessThanOrEqual":"6.6.*","status":"unaffected","versionType":"semver"},{"version":"6.12.113","lessThanOrEqual":"6.12.*","status":"unaffected","versionType":"semver"},{"version":"6.18.56","lessThanOrEqual":"6.18.*","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-2026-98753","source_modified_at":"2026-10-21T12:56:28.904Z","fetched_at":"2026-10-23T18:45:31.882637Z","package":{"name":"Linux","ecosystem":null},"version":"16032c980d8f71642fcdc99309c571df3fcf3328","basis":"first unaffected version stated in the CVE record"},{"source":"CVE List","source_url":"https://www.cve.org/CVERecord?id=CVE-2026-98753","source_modified_at":"2026-10-21T12:56:28.904Z","fetched_at":"2026-10-23T18:45:31.882637Z","package":{"name":"Linux","ecosystem":null},"version":"34d4f67472ef7a744970b772a8565ddc727788e2","basis":"first unaffected version stated in the CVE record"},{"source":"CVE List","source_url":"https://www.cve.org/CVERecord?id=CVE-2026-98753","source_modified_at":"2026-10-21T12:56:28.904Z","fetched_at":"2026-10-23T18:45:31.882637Z","package":{"name":"Linux","ecosystem":null},"version":"7021acc84c2e0add77a1a33152e3a1e428fdbfdb","basis":"first unaffected version stated in the CVE record"},{"source":"CVE List","source_url":"https://www.cve.org/CVERecord?id=CVE-2026-98753","source_modified_at":"2026-10-21T12:56:28.904Z","fetched_at":"2026-10-23T18:45:31.882637Z","package":{"name":"Linux","ecosystem":null},"version":"6388409b711eb91b14fa075a4d861ccc4df1cfe7","basis":"first unaffected version stated in the CVE record"},{"source":"CVE List","source_url":"https://www.cve.org/CVERecord?id=CVE-2026-98753","source_modified_at":"2026-10-21T12:56:28.904Z","fetched_at":"2026-10-23T18:45:31.882637Z","package":{"name":"Linux","ecosystem":null},"version":"56964f6a31238fb41d5830bb42520c5b10ff7d8f","basis":"first unaffected version stated in the CVE record"}],"cvss":null,"severity":null,"kev":{"listed":false},"epss":{"probability":0.00168,"percentile":0.05721,"score_date":"2026-10-23"},"published_at":"2026-10-18T15:47:37.700Z","modified_at":"2026-10-21T12:56:28.904Z","provenance":[{"source":"CVE List","url":"https://www.cve.org/CVERecord?id=CVE-2026-98753","fetched_at":"2026-10-23T18:45:31.882637Z","source_modified_at":"2026-10-21T12:56:28.904Z"},{"source":"EPSS","url":"https://api.first.org/data/v1/epss?cve=CVE-2026-98753","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/16032c980d8f71642fcdc99309c571df3fcf3328"},{"source":"CVE List","url":"https://git.kernel.org/stable/c/34d4f67472ef7a744970b772a8565ddc727788e2"},{"source":"CVE List","url":"https://git.kernel.org/stable/c/7021acc84c2e0add77a1a33152e3a1e428fdbfdb"},{"source":"CVE List","url":"https://git.kernel.org/stable/c/6388409b711eb91b14fa075a4d861ccc4df1cfe7"},{"source":"CVE List","url":"https://git.kernel.org/stable/c/56964f6a31238fb41d5830bb42520c5b10ff7d8f"}],"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":"2026-10-21T12:56:28.904Z","content_hash":"1d62bfcf0adf58661bd48cd059628059f9d5c50ce677fd567c18460029cb12e8"}}