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CVE PROGRAM SOURCE RECORD7.5 High

CVE-2026-101303

IPv6 UDP sendto(2) bypasses jail loopback restriction

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Status
Published
Published
Updated
Assigning organization
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.

Affected products

Version statuses are supplied by the assigning organization. Consult the original record for detailed ranges and platform conditions.

FreeBSD FreeBSD

Default version status: unknown

  • 15.1-RELEASE to < p4affected
  • 15.0-RELEASE to < p14affected
  • 14.5-RELEASE to < p1affected
  • 14.4-RELEASE to < p10affected

References