CVE-2026-101306 — Multiple jail filesystem root escapes
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 its…
Published: 2026-10-15 · CVSS: 9.8 · CVSS 3.1
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.
Source: CVE Program · Revision 8b16575c39f1e1810c5e863010da073d2d3285e7