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
Fix
Microsoft's update · Moderate
- Release Notes — azl3 moby-engine 25.0.3-20 on Azure Linux 3.0 · build 25.0.18-1
From the 2026-Oct release note of Microsoft's Security Update Guide, revised 2026-10-31.
Every line above is quoted from NVD, CISA, Microsoft, the vendor's own advisory or DISA; nothing is generated.
Change history 1
- First seenCVSS 6.9NVD modified 2026-10-08 20:46
Affected (CPE criteria) 0
NVD has not attached CPE configurations yet.