{"dataType":"CVE_RECORD","dataVersion":"5.2","cveMetadata":{"cveId":"CVE-2025-15547","assignerOrgId":"63664ac6-956c-4cba-a5d0-f46076e16109","state":"PUBLISHED","assignerShortName":"freebsd","dateReserved":"2026-01-26T15:57:03.264Z","datePublished":"2026-03-09T11:46:51.973Z","dateUpdated":"2026-03-10T18:59:55.413Z"},"containers":{"cna":{"datePublic":"2026-01-27T23:00:00.000Z","title":"Jail escape by a privileged user via nullfs","references":[{"tags":["vendor-advisory"],"url":"https://security.freebsd.org/advisories/FreeBSD-SA-26:02.jail.asc"}],"affected":[{"defaultStatus":"unknown","modules":["jail"],"product":"FreeBSD","vendor":"FreeBSD","versions":[{"lessThan":"p8","status":"affected","version":"14.3-RELEASE","versionType":"release"},{"lessThan":"p9","status":"affected","version":"13.5-RELEASE","versionType":"release"}]}],"descriptions":[{"lang":"en","value":"By default, jailed processes cannot mount filesystems, including nullfs(4).  However, the allow.mount.nullfs option enables mounting nullfs filesystems, subject to privilege checks.\n\nIf a privileged user within a jail is able to nullfs-mount directories, a limitation of the kernel's path lookup logic allows that user to escape the jail's chroot, yielding access to the full filesystem of the host or parent jail.\n\nIn a jail configured to allow nullfs(4) mounts from within the jail, the jailed root user can escape the jail's filesystem root."}],"problemTypes":[{"descriptions":[{"cweId":"CWE-269","description":"CWE-269 Improper Privilege Management","lang":"en","type":"CWE"}]}],"providerMetadata":{"orgId":"63664ac6-956c-4cba-a5d0-f46076e16109","shortName":"freebsd","dateUpdated":"2026-03-09T11:46:51.973Z"},"x_generator":{"engine":"cvelib 1.8.0"}},"adp":[{"metrics":[{"cvssV3_1":{"scope":"CHANGED","version":"3.1","baseScore":8.8,"attackVector":"LOCAL","baseSeverity":"HIGH","vectorString":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H","integrityImpact":"HIGH","userInteraction":"NONE","attackComplexity":"LOW","availabilityImpact":"HIGH","privilegesRequired":"LOW","confidentialityImpact":"HIGH"}},{"other":{"type":"ssvc","content":{"timestamp":"2026-03-10T18:59:30.204346Z","id":"CVE-2025-15547","options":[{"Exploitation":"none"},{"Automatable":"no"},{"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":"2026-03-10T18:59:55.413Z"}}]}}