CVE-2026-101305
UNKNOWN
NVD
CVSS Score
0
Severity
UNKNOWN
Published
Oct 15, 2026
Vendor
unknown
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. A 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.