CVE-2026-101303
Received Received - Intake

UDP IPv6 Loopback Address Rewrite Bypass in FreeBSD Jail

Publication date: 2026-10-15

Last updated on: 2026-10-15

Assigner: FreeBSD

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.

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Meta Information

Published
2026-10-15
Last Modified
2026-10-15
Generated
2026-10-15
EPSS Evaluated
N/A
NVD
CVE-2026-101303
EUVD
EUVD-2026-101874

Affected Vendors & Products

Showing 4 associated CPEs
Vendor Product Version / Range
FreeBSD FreeBSD 15.1-RELEASE
FreeBSD FreeBSD 15.0-RELEASE
FreeBSD FreeBSD 14.5-RELEASE
FreeBSD FreeBSD 14.4-RELEASE

Helpful Resources

Exploitability

CWE
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KEV
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CWE ID Description
CWE-941 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.

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