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.
Analysis
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Default status is the baseline for the product, each version can override it (e.g. patched versions marked unaffected).
| Vendor | Product | Default status | Versions | |||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| FreeBSD | FreeBSD | unknown |
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Tracking
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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 |
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Subscriptions
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MITRE
Status: PUBLISHED
Assigner: freebsd
Published:
Updated: 2026-10-15T06:58:55.833Z
Reserved: 2026-09-28T13:33:02.323Z
Link: CVE-2026-101303
Vulnrichment
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NVD
Status : Received
Published: 2026-10-15T07:17:57.437
Modified: 2026-10-15T07:17:57.437
Link: CVE-2026-101303
Redhat
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OpenCVE Enrichment
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CWE-941
Incorrectly Specified Destination in a Communication Channel