CVE-2026-101303

Published: Oct 15, 2026Modified: Oct 20, 2026

7.5

Vector

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N

Exploitability: 3.9 / Impact: 3.6

Source: 134c704f-9b21-4f2e-91b3-4a467353bcc0 (Secondary)

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.

Affected (29)

Products: Freebsd: Freebsd

Freebsd

1 product

Freebsd

Configuration A

29 vulnerable

Vulnerable Software	Affected Versions
Freebsd Freebsd	Version 14.4
Freebsd Freebsd	Version 14.4 p1
Freebsd Freebsd	Version 14.4 p2
Freebsd Freebsd	Version 14.4 p3
Freebsd Freebsd	Version 14.4 p4
Freebsd Freebsd	Version 14.4 p5
Freebsd Freebsd	Version 14.4 p6
Freebsd Freebsd	Version 14.4 p7
Freebsd Freebsd	Version 14.4 p8
Freebsd Freebsd	Version 14.4 p9
Freebsd Freebsd	Version 14.5
Freebsd Freebsd	Version 15.0
Freebsd Freebsd	Version 15.0 p10
Freebsd Freebsd	Version 15.0 p11
Freebsd Freebsd	Version 15.0 p12
Freebsd Freebsd	Version 15.0 p13
Freebsd Freebsd	Version 15.0 p1
Freebsd Freebsd	Version 15.0 p2
Freebsd Freebsd	Version 15.0 p3
Freebsd Freebsd	Version 15.0 p4
Freebsd Freebsd	Version 15.0 p5
Freebsd Freebsd	Version 15.0 p6
Freebsd Freebsd	Version 15.0 p7
Freebsd Freebsd	Version 15.0 p8
Freebsd Freebsd	Version 15.0 p9
Freebsd Freebsd	Version 15.1
Freebsd Freebsd	Version 15.1 p1
Freebsd Freebsd	Version 15.1 p2
Freebsd Freebsd	Version 15.1 p3

Related CWEs

CWE-941

Incorrectly Specified Destination in a Communication Channel

The product creates a communication channel to initiate an outgoing request to an actor, but it does not correctly specify the intended destination for that actor.

References (1)

https://security.freebsd.org/advisories/FreeBSD-SA-26:69.udp.asc

Source: secteam@freebsd.org

PatchVendor Advisory

Timeline

No history available yet.