{"id":"CVE-2026-101305","published":"2026-10-15T07:17:57.663","lastModified":"2026-10-16T19:16:58.017","description":"renameat(2) did not enforce FD_RESOLVE_BENEATH on its directory arguments.  A jailed process could rename a directory relative to a restricted descriptor, then escape the jail root via fchdir(2).  This requires the directory to reside on a filesystem that is also reachable from the jail's root.\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.","cvssScore":8.8,"cvssSeverity":"HIGH","cvssVector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H","cwes":["CWE-273"],"vendors":[],"products":[],"references":[{"url":"https://security.freebsd.org/advisories/FreeBSD-SA-26:66.jail.asc","tags":[]}],"exploitRefs":[],"hasPoc":false,"ai":null}