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.
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.
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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Project Subscriptions
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Advisories
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Fixes
Solution
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Workaround
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References
History
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 |
|
Projects
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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
No data.
NVD
Status : Awaiting Analysis
Published: 2026-10-15T07:17:57.437
Modified: 2026-10-15T16:17:41.437
Link: CVE-2026-101303
Redhat
No data.
OpenCVE Enrichment
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Weaknesses