CVE-2017-9264: Openvswitch

Critical severity, CVSS 9.8. EPSS: 2.4% chance of exploitation in the next 30 days.

In lib/conntrack.c in the firewall implementation in Open vSwitch (OvS) 2.6.1, there is a buffer over-read while parsing malformed TCP, UDP, and IPv6 packets in the functions `extract_l3_ipv6`, `extract_l4_tcp`, and `extract_l4_udp` that can be triggered remotely.

Affected products

• Openvswitch Openvswitch: version 2.6.1 only

Published 2017-05-29. Last modified 2026-06-17.