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6.9 Medium

CVE-2026-92542 The firewall rules which mark VXLAN datagrams for encryption indiscriminately match both authentic VXLAN datagrams…

Description

The firewall rules which mark VXLAN datagrams for encryption indiscriminately match both authentic VXLAN datagrams sent from the kernel and forged datagrams sent by user processes. Any packet sent from the host network namespace of a Linux Swarm node is encrypted with the overlay-network IPsec parameters which meets the following criteria: - UDP datagram - Destination port is the Swarm data-path port - Datagram starts with a VXLAN header for the VNI of an encrypted overlay network which any running container on the node is connected to

Affected products and versions

Product Affected versions Fixed in
Docker Engine 26.0 26.0.0 → < 29.8.2 29.8.2
Docker Engine 25.0 earliest → < 25.0.19 25.0.19
Docker Engine overlay network driver 26.0 26.0.0 → latest No fix stated
Docker Engine overlay network driver 25.0 earliest → < 25.0.19 25.0.19
Moby overlay network driver 2.0 2.0.0-beta.0 → < 2.0.0-beta.25 2.0.0-beta.25

References

Timeline

  1. Published
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