{"dataType": "CVE_RECORD", "dataVersion": "5.2", "cveMetadata": {"cveId": "CVE-2026-101306", "assignerOrgId": "63664ac6-956c-4cba-a5d0-f46076e16109", "state": "PUBLISHED", "assignerShortName": "freebsd", "dateReserved": "2026-09-28T13:33:02.323Z", "datePublished": "2026-10-15T06:46:25.804Z", "dateUpdated": "2026-10-16T18:33:15.815Z"}, "containers": {"cna": {"datePublic": "2026-09-29T20:30:00.000Z", "title": "Multiple jail filesystem root escapes", "references": [{"tags": ["vendor-advisory"], "url": "https://security.freebsd.org/advisories/FreeBSD-SA-26:66.jail.asc"}], "affected": [{"defaultStatus": "unknown", "modules": ["jail"], "product": "FreeBSD", "vendor": "FreeBSD", "versions": [{"status": "affected", "versionType": "release", "version": "15.1-RELEASE", "lessThan": "p4"}, {"status": "affected", "versionType": "release", "version": "15.0-RELEASE", "lessThan": "p14"}, {"status": "affected", "versionType": "release", "version": "14.5-RELEASE", "lessThan": "p1"}, {"status": "affected", "versionType": "release", "version": "14.4-RELEASE", "lessThan": "p10"}]}], "credits": [{"lang": "en", "type": "finder", "value": "Jan Bramkamp"}], "descriptions": [{"lang": "en", "value": "SCM_RIGHTS file descriptor passing did not preserve FD_RESOLVE_BENEATH when a descriptor was transferred. A process could clear the restriction by sending the descriptor to itself over a Unix domain socket.\n\nA process in a jail that has received a directory file descriptor from another jail can use these techniques to escape the jail's filesystem root restriction."}], "problemTypes": [{"descriptions": [{"cweId": "CWE-273", "description": "CWE-273: Improper Check for Dropped Privileges", "lang": "en", "type": "CWE"}, {"cweId": "CWE-281", "description": "CWE-281: Improper Preservation of Permissions", "lang": "en", "type": "CWE"}]}], "providerMetadata": {"orgId": "63664ac6-956c-4cba-a5d0-f46076e16109", "shortName": "freebsd", "dateUpdated": "2026-10-15T06:46:25.804Z"}, "x_generator": {"engine": "cvelib 1.8.0"}}, "adp": [{"metrics": [{"cvssV3_1": {"scope": "UNCHANGED", "version": "3.1", "baseScore": 9.8, "attackVector": "NETWORK", "baseSeverity": "CRITICAL", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H", "integrityImpact": "HIGH", "userInteraction": "NONE", "attackComplexity": "LOW", "availabilityImpact": "HIGH", "privilegesRequired": "NONE", "confidentialityImpact": "HIGH"}}, {"other": {"type": "ssvc", "content": {"timestamp": "2026-10-16T18:33:08.434808Z", "id": "CVE-2026-101306", "options": [{"Exploitation": "none"}, {"Automatable": "yes"}, {"Technical Impact": "total"}], "role": "CISA Coordinator", "version": "2.0.3"}}}], "title": "CISA ADP Vulnrichment", "providerMetadata": {"orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "shortName": "CISA-ADP", "dateUpdated": "2026-10-16T18:33:15.815Z"}}]}}

{}

{"affected": [{"affectedData": [{"defaultStatus": "unknown", "modules": ["jail"], "product": "FreeBSD", "vendor": "FreeBSD", "versions": [{"lessThan": "p4", "status": "affected", "version": "15.1-RELEASE", "versionType": "release"}, {"lessThan": "p14", "status": "affected", "version": "15.0-RELEASE", "versionType": "release"}, {"lessThan": "p1", "status": "affected", "version": "14.5-RELEASE", "versionType": "release"}, {"lessThan": "p10", "status": "affected", "version": "14.4-RELEASE", "versionType": "release"}]}], "source": "secteam@freebsd.org"}], "cveTags": [], "descriptions": [{"lang": "en", "value": "SCM_RIGHTS file descriptor passing did not preserve FD_RESOLVE_BENEATH when a descriptor was transferred. A process could clear the restriction by sending the descriptor to itself over a Unix domain socket.\n\nA process in a jail that has received a directory file descriptor from another jail can use these techniques to escape the jail's filesystem root restriction."}], "id": "CVE-2026-101306", "lastModified": "2026-10-16T19:17:00.147", "metrics": {"cvssMetricV31": [{"cvssData": {"attackComplexity": "LOW", "attackVector": "NETWORK", "availabilityImpact": "HIGH", "baseScore": 9.8, "baseSeverity": "CRITICAL", "confidentialityImpact": "HIGH", "integrityImpact": "HIGH", "privilegesRequired": "NONE", "scope": "UNCHANGED", "userInteraction": "NONE", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H", "version": "3.1"}, "exploitabilityScore": 3.9, "impactScore": 5.9, "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "type": "Secondary"}], "ssvcV203": [{"source": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "ssvcData": {"id": "CVE-2026-101306", "options": [{"exploitation": "none"}, {"automatable": "yes"}, {"technicalImpact": "total"}], "role": "CISA Coordinator", "timestamp": "2026-10-16T18:33:08.434808Z", "version": "2.0.3"}}]}, "published": "2026-10-15T07:17:57.780", "references": [{"source": "secteam@freebsd.org", "url": "https://security.freebsd.org/advisories/FreeBSD-SA-26:66.jail.asc"}], "sourceIdentifier": "secteam@freebsd.org", "vulnStatus": "Undergoing Analysis", "weaknesses": [{"description": [{"lang": "en", "value": "CWE-273"}, {"lang": "en", "value": "CWE-281"}], "source": "secteam@freebsd.org", "type": "Secondary"}]}

{}

{"affected": [{"configurations": [{"platform": null, "status": "affected", "versions": {"scheme": "generic", "value": "[15.1-RELEASE,p4)"}}, {"platform": null, "status": "affected", "versions": {"scheme": "generic", "value": "[15.0-RELEASE,p14)"}}, {"platform": null, "status": "affected", "versions": {"scheme": "generic", "value": "[14.5-RELEASE,p1)"}}, {"platform": null, "status": "affected", "versions": {"scheme": "generic", "value": "[14.4-RELEASE,p10)"}}], "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": "2026-10-16T22:15:06.410664+00:00", "updated": "2026-10-16T22:45:14.209021+00:00", "vendors": ["freebsd", "freebsd$PRODUCT$freebsd"]}