CVE-2026-101305
CVE-2026-101305 · Multiple jail filesystem root escapes
This page contains facts from public vulnerability sources. Check the original advisory before updating.
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.
CVSS 8.8 · High · EPSS 0.4%
- 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