Description
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.
Published: 2026-10-15
Score: 7.5 High
EPSS: < 1% Very Low
KEV: No
Impact: n/a
Action: n/a
AI Analysis

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Remediation

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History

Fri, 16 Oct 2026 19:30:00 +0000

Type Values Removed Values Added
Metrics cvssV3_1

{'score': 7.5, 'vector': 'CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N'}

Thu, 15 Oct 2026 13:30:00 +0000

Type Values Removed Values Added
Description 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.
Title IPv6 UDP sendto(2) bypasses jail loopback restriction
Weaknesses CWE-941
References

Subscriptions

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cve-icon MITRE

Status: PUBLISHED

Assigner: freebsd

Published:

Updated: 2026-10-16T18:36:07.211Z

Reserved: 2026-09-28T13:33:02.323Z

Link: CVE-2026-101303

cve-icon Vulnrichment

No data.

cve-icon NVD

Status : Undergoing Analysis

Published: 2026-10-15T07:17:57.437

Modified: 2026-10-16T19:16:57.530

Link: CVE-2026-101303

cve-icon Redhat

No data.

cve-icon OpenCVE Enrichment

No data.

Weaknesses
  • CWE-941

    Incorrectly Specified Destination in a Communication Channel