In lib/conntrack.c in the firewall implementation in Open vSwitch (OvS) 2.6.1, there is a…
Priority MEDIUM 47CWE-125Published · Updated
Key facts
- Attack vector
- Network
- Privileges required
- None
- User interaction
- None
- Attack complexity
- Low
- Impact type
- —
- Confidentiality · integrity · availability
- High · High · High
- Fix status
- Fixed
Attack profile from CVSS 3.0 · NVD. Fix status from CNA and Red Hat.
Summary
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.
Why it matters now
EPSS 0.02415 84th percentileScored 2026-11-07
Fix Fixed Red Hat: 3 advisories
SSVC decision points
Not available: CISA has not published SSVC decision points for this record.
Affected products
| Vendor | Product | Affected versions | Fixed in | Status | Source |
|---|---|---|---|---|---|
| — | — | all versions | — | No fix listed | CNA |
- — Vendor— Affected all versions Fixed in — No fix listed CNA
CPE configurations NVD · 1
| CPE | Versions | Role | Vendor |
|---|---|---|---|
| cpe:2.3:a:openvswitch:openvswitch:2.6.1:*:*:*:*:*:*:* | 2.6.1 | Vulnerable | Openvswitch |
- cpe:2.3:a:openvswitch:openvswitch:2.6.1:*:*:*:*:*:*:* Versions 2.6.1 Vulnerable ·Openvswitch
Remediation
Red Hat 3 advisories
- RHSA-2017:2727 Released 2017-09-13 · Red Hat rating Moderateopenvswitch security update
- Red Hat OpenStack Platform 11.0 openvswitch-2.6.1-13.git20161206.el7ost, openvswitch-ovn-central-2.6.1-13.git20161206.el7ost, openvswitch-ovn-common-2.6.1-13.git20161206.el7ost +4
- RHSA-2017:2648 Released 2017-09-06 · Red Hat rating Moderateopenvswitch security and bug fix update
- Red Hat OpenStack Platform 10.0 openvswitch-2.6.1-13.git20161206.el7ost, python-openvswitch-2.6.1-13.git20161206.el7ost
- RHSA-2017:2418 Released 2017-08-03 · Red Hat rating Moderateopenvswitch security, bug fix, and enhancement update
- Fast Datapath for Red Hat Enterprise Linux 7 openvswitch-2.7.2-1.git20170719.el7fdp, openvswitch-devel-2.7.2-1.git20170719.el7fdp, openvswitch-ovn-central-2.7.2-1.git20170719.el7fdp +6
- Red Hat Virtualization 4.2 Management Agent for RHEL 7.6 EUS Hosts openvswitch-2.7.2-1.git20170719.el7fdp, openvswitch-devel-2.7.2-1.git20170719.el7fdp, openvswitch-ovn-common-2.7.2-1.git20170719.el7fdp +2
Vendor assessments
Red Hat
Red Hat rating: Moderate. Red Hat's page for this CVE →
| Product | Status | Plan or fix |
|---|---|---|
| Fast Datapath for Red Hat Enterprise Linux 7 | Fixed | RHSA-2017:2418 |
| Red Hat OpenStack Platform 10.0 | Fixed | RHSA-2017:2648 |
| Red Hat OpenStack Platform 11.0 | Fixed | RHSA-2017:2727 |
| Red Hat Virtualization 4.2 Management Agent for RHEL 7.6 EUS Hosts | Fixed | RHSA-2017:2418 |
Not affected: 7 products
- Red Hat Enterprise Linux OpenStack Platform 5 (Icehouse)
- Red Hat Enterprise Linux OpenStack Platform 6 (Juno)
- Red Hat Enterprise Linux OpenStack Platform 7 (Kilo)
- Red Hat OpenShift Enterprise 3
- Red Hat OpenStack Platform 12 (Pike)
- Red Hat OpenStack Platform 8 (Liberty)
- Red Hat OpenStack Platform 9 (Mitaka)
Timeline
- 2026-10-02 Threatist record created from CVE-2017-9264
- 2026-10-03 Alias added: GHSA-r4pw-w7qg-248f
References
More Openvswitch vulnerabilities
- TI-2024-15067 openvswitch 2.17.8 was discovered to contain a memory leak via the function xmalloc__ in openvswitch-2.17.8/lib/util.c. CVSS 3.1HIGH 7.5
- TI-2016-01905 Buffer overflow in lib/flow.c in ovs-vswitchd in Open vSwitch 2.2.x and 2.3.x before… CVSS 3.0CRITICAL 9.8
- TI-2020-18020 Uncontrolled resource consumption in openvswitch CVSS 3.1HIGH 7.5
- TI-2017-06707 In Open vSwitch (OvS) v2.7.0, there is a buffer over-read while parsing the group mod… CVSS 3.0CRITICAL 9.8
- TI-2017-06664 In Open vSwitch (OvS) 2.7.0, while parsing an OFPT_QUEUE_GET_CONFIG_REPLY type OFP 1.0… CVSS 3.1CRITICAL 9.8
- TI-2022-03972 An integer underflow in Organization Specific TLV was found in various versions of OpenvSwitch. CVSS 3.1CRITICAL 9.8
Sources
- CVE-2017-9264 · CVE Program
- CVE-2017-9264 · NVD
- FIRST EPSS
- GHSA-r4pw-w7qg-248f · GitHub Advisory Database · CC BY 4.0
- CVE-2017-9264 · Red Hat security data · CC BY 4.0
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