{"schemaVersion":3,"id":"CVE-2026-101306","aliases":[],"status":"published","duplicateOf":null,"title":null,"description":"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.","dates":{"published":"2026-10-15T06:46:25.804Z","modified":"2026-10-16T18:33:15.815Z","reserved":null,"kevAdded":[],"kevDue":[]},"cvss":{"headline":{"score":9.8,"severity":"critical","version":"3.1","versionLabel":"v3.1","source":"CVE.org","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H","computed":false,"selection":"backend-summary"},"metrics":[{"version":"3.1","versionLabel":"v3.1","source":"CVE.org","score":9.8,"severity":"critical","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H","exploitability":null,"impact":null,"computed":false},{"version":"3.1","versionLabel":"v3.1","source":"NVD","score":9.8,"severity":"critical","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H","exploitability":null,"impact":null,"computed":false}]},"epss":{"probability":0.00186,"percentile":0.07649,"severity":"low","asOf":"2026-10-16T00:00:00.000Z","change":{"pp":null,"baselineDate":null,"baselineScore":null},"history":[{"date":"2026-10-15T00:00:00.000Z","score":0.00186,"percentile":0.07632},{"date":"2026-10-16T00:00:00.000Z","score":0.00186,"percentile":0.07649}],"last30":[{"date":"2026-10-15T00:00:00.000Z","score":0.00186,"percentile":0.07632},{"date":"2026-10-16T00:00:00.000Z","score":0.00186,"percentile":0.07649}]},"kev":{"state":"not-listed","entries":[],"listedCount":0,"totalCatalogs":3,"catalogs":[{"source":"cisa","label":"CISA","listed":false,"entry":null},{"source":"enisa","label":"ENISA","listed":false,"entry":null},{"source":"circl","label":"CIRCL","listed":false,"entry":null}]},"ransomware":{"state":"none-recorded","sources":[]},"exploits":[],"exploitCount":0,"weaknesses":[{"id":"CWE-273","name":"Improper Check for Dropped Privileges","description":"The product attempts to drop privileges but does not check or incorrectly checks to see if the drop succeeded.","type":"weakness","status":"Incomplete","abstraction":"Base","likelihoodOfExploit":"Medium","url":"https://cwe.mitre.org/data/definitions/273.html"},{"id":"CWE-281","name":"Improper Preservation of Permissions","description":"The product does not preserve permissions or incorrectly preserves permissions when copying, restoring, or sharing objects, which can cause them to have less restrictive permissions than intended.","type":"weakness","status":"Draft","abstraction":"Base","likelihoodOfExploit":null,"url":"https://cwe.mitre.org/data/definitions/281.html"}],"affected":[{"vendor":"freebsd","product":"freebsd","name":"FreeBSD","label":"freebsd","ecosystem":null,"cpePart":"a","purl":null,"purlType":null,"versions":[{"text":"≥ 15.1-RELEASE, < p4","noFixRecorded":false,"fixedIn":null},{"text":"≥ 15.0-RELEASE, < p14","noFixRecorded":false,"fixedIn":null},{"text":"≥ 14.5-RELEASE, < p1","noFixRecorded":false,"fixedIn":null},{"text":"≥ 14.4-RELEASE, < p10","noFixRecorded":false,"fixedIn":null}],"versionsText":"≥ 15.1-RELEASE, < p4 | ≥ 15.0-RELEASE, < p14 | ≥ 14.5-RELEASE, < p1 | ≥ 14.4-RELEASE, < p10","eol":{"isEol":null,"eolDate":null,"matchMethod":"cpe","cycle":null,"product":{"name":"freebsd","label":"FreeBSD","category":"os"}}}],"affectedCount":1,"eol":{"hasEol":false,"count":0},"references":[{"url":"https://security.freebsd.org/advisories/FreeBSD-SA-26:66.jail.asc","label":"security.freebsd.org/advisories/FreeBSD-SA-26:66.jail.asc","hostname":"security.freebsd.org","tags":["Vendor Advisory"]}],"lineage":{"upstream":[],"downstream":[],"duplicates":[],"related":[]},"timeline":[{"kind":"published","date":"2026-10-15T06:46:25.804Z","label":"Published","detail":"Vulnerability first disclosed.","source":null},{"kind":"modified","date":"2026-10-16T18:33:15.815Z","label":"Last modified","detail":"Vulnerability information updated.","source":null}],"risk":{"score":70,"level":"high","profile":"Default","thresholds":{"critical":75,"high":50,"medium":25,"low":10}},"meta":{"dataAsOf":"2026-10-16T22:25:39.528Z","stale":false,"partial":false}}