CVE-2017-9264

openvswitch: Buffer over-read while parsing malformed TCP, UDP and IPv6 packets

Published 29 May 2017Modified 17 Jun 2026CWE 125

In the Trivy database since at least 24 Oct 2026, 07:11 UTCWhen it arrived before that build is not recorded.

Severity by source

NVD9.8CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Red Hat5.6CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:L/A:L

Trivy's own label is CRITICAL. Rated critical by NVD, Photon OS. Rated lower by Red Hat (medium), Ubuntu (medium).

Description

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 packages and fixed versions

Source	Package	Fixed in
Photon OS 1.0	openvswitch	2.6.1-3.ph1
debian 11	openvswitch	2.8.1+dfsg1-2
debian 12	openvswitch	2.8.1+dfsg1-2
debian 13	openvswitch	2.8.1+dfsg1-2
debian 14	openvswitch	2.8.1+dfsg1-2
echo	openvswitch	2.8.1+dfsg1-2
ubuntu 17.04	openvswitch	2.6.1-0ubuntu5.1

References

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Vulnerability data compiled from the Trivy vulnerability database (trivy-db, Aqua Security, Apache License 2.0), which aggregates third-party advisories. CVE records are published by The MITRE Corporation under the CVE Terms of Use; CVE is a trademark of MITRE. This product uses data from the NVD API but is not endorsed or certified by the NVD. Severity, titles and advisory data from the GitHub Advisory Database (CC BY 4.0), Red Hat security data (CC BY 4.0) and the other sources linked on each entry. Entries may be summarised or re-formatted; the linked original is the authoritative record.