{"dataType": "CVE_RECORD", "dataVersion": "5.2", "cveMetadata": {"cveId": "CVE-2026-5398", "assignerOrgId": "63664ac6-956c-4cba-a5d0-f46076e16109", "state": "PUBLISHED", "assignerShortName": "freebsd", "dateReserved": "2026-04-02T01:48:17.131Z", "datePublished": "2026-04-22T02:23:56.767Z", "dateUpdated": "2026-04-22T02:23:56.767Z"}, "containers": {"cna": {"datePublic": "2026-04-21T18:00:00.000Z", "title": "Kernel use-after-free bug in the TIOCNOTTY handler", "references": [{"tags": ["vendor-advisory"], "url": "https://security.freebsd.org/advisories/FreeBSD-SA-26:10.tty.asc"}], "affected": [{"defaultStatus": "unknown", "modules": ["tty"], "product": "FreeBSD", "vendor": "FreeBSD", "versions": [{"status": "affected", "versionType": "release", "version": "15.0-RELEASE", "lessThan": "p6"}, {"status": "affected", "versionType": "release", "version": "14.4-RELEASE", "lessThan": "p2"}, {"status": "affected", "versionType": "release", "version": "14.3-RELEASE", "lessThan": "p11"}, {"status": "affected", "versionType": "release", "version": "13.5-RELEASE", "lessThan": "p12"}]}], "credits": [{"lang": "en", "type": "finder", "value": "Nicholas Carlini using Claude, Anthropic"}], "descriptions": [{"lang": "en", "value": "The implementation of TIOCNOTTY failed to clear a back-pointer from the structure representing the controlling terminal to the calling process' session. If the invoking process then exits, the terminal structure may end up containing a pointer to freed memory.\n\nA malicious process can abuse the dangling pointer to grant itself root privileges."}], "problemTypes": [{"descriptions": [{"cweId": "CWE-416", "description": "CWE-416: Use After Free", "lang": "en", "type": "CWE"}]}], "providerMetadata": {"orgId": "63664ac6-956c-4cba-a5d0-f46076e16109", "shortName": "freebsd", "dateUpdated": "2026-04-22T02:23:56.767Z"}}}}

{}

{"cveTags": [], "descriptions": [{"lang": "en", "value": "The implementation of TIOCNOTTY failed to clear a back-pointer from the structure representing the controlling terminal to the calling process' session. If the invoking process then exits, the terminal structure may end up containing a pointer to freed memory.\n\nA malicious process can abuse the dangling pointer to grant itself root privileges."}], "id": "CVE-2026-5398", "lastModified": "2026-04-22T03:16:01.213", "metrics": {}, "published": "2026-04-22T03:16:01.213", "references": [{"source": "secteam@freebsd.org", "url": "https://security.freebsd.org/advisories/FreeBSD-SA-26:10.tty.asc"}], "sourceIdentifier": "secteam@freebsd.org", "vulnStatus": "Received", "weaknesses": [{"description": [{"lang": "en", "value": "CWE-416"}], "source": "secteam@freebsd.org", "type": "Secondary"}]}

{}

{"affected": [{"configurations": [{"platform": null, "status": "affected", "versions": {"scheme": "generic", "value": "[15.0-RELEASE,p6)"}}, {"platform": null, "status": "affected", "versions": {"scheme": "generic", "value": "[14.4-RELEASE,p2)"}}, {"platform": null, "status": "affected", "versions": {"scheme": "generic", "value": "[14.3-RELEASE,p11)"}}, {"platform": null, "status": "affected", "versions": {"scheme": "generic", "value": "[13.5-RELEASE,p12)"}}], "enrichment": {"confidence": 100.0, "confidence_source": "matching", "scores": [{"score": 100.0, "source": "matching"}]}, "original": {"product": "FreeBSD", "source": "cna", "vendor": "FreeBSD"}, "product": "freebsd", "vendor": "freebsd"}], "created": "2026-04-22T03:30:06.536006+00:00", "updated": "2026-04-22T03:30:06.536069+00:00", "vendors": ["freebsd", "freebsd$PRODUCT$freebsd"]}