CVE-2026-101304
CVE-2026-101304 · Multiple jail filesystem root escapes
This page contains facts from public vulnerability sources. Check the original advisory before updating.
When fdescfs(4) was mounted in a jail with the "nodup" option, opening /dev/fd/N returned a descriptor that did not inherit FD_RESOLVE_BENEATH or the Capsicum capability rights of descriptor N. 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.
CVSS 7.1 · High · EPSS 0.1%
- Published
- Updated
Affected products and versions
freebsd
- Versions
- ≥ 15.1-RELEASE, < p4: Affected (release)
- ≥ 15.0-RELEASE, < p14: Affected (release)
- ≥ 14.5-RELEASE, < p1: Affected (release)
- ≥ 14.4-RELEASE, < p10: Affected (release)
No fix published