CVE-2026-101306 — Multiple jail filesystem root escapes

Description (CNA)

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.

Affected (CNA)

Vendor / product	Versions
FreeBSD / FreeBSD	affected 15.1-RELEASE before p4; affected 15.0-RELEASE before p14; affected 14.5-RELEASE before p1; affected 14.4-RELEASE before p10

CWE

CWE-273, CWE-281

References

https://security.freebsd.org/advisories/FreeBSD-SA-26:66.jail.asc

ADP enrichment

CISA-ADP

No English description supplied.

No references supplied.