Detections
Analytics
CVE-2026-101306
critical
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. 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.
References
https://security.freebsd.org/advisories/FreeBSD-SA-26:66.jail.asc