CVE-2026-101303
CVE-2026-101303 · IPv6 UDP sendto(2) bypasses jail loopback restriction
This page contains facts from public vulnerability sources. Check the original advisory before updating.
The IPv6 UDP send path for unconnected sockets did not apply the jail policy of rewriting a loopback destination address to the jail's primary IPv6 address. A process in a classic (non-VNET) jail can send UDP datagrams to services listening on the host's IPv6 loopback address, bypassing jail network isolation.
CVSS 7.5 · 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