In Open vSwitch (OvS) 2.5.0, a malformed IP packet can cause the switch to read past the…
Priority MEDIUM 40CWE-119Published · Updated
Key facts
- Attack vector
- Adjacent network
- Privileges required
- None
- User interaction
- None
- Attack complexity
- Low
- Impact type
- Code execution
- Confidentiality · integrity · availability
- High · High · High
- Fix status
- No fix listed
Attack profile from CVSS 3.0 · NVD. Fix status from CNA and Red Hat. Impact type from CWE-119 and the CVSS impact.
Summary
In Open vSwitch (OvS) 2.5.0, a malformed IP packet can cause the switch to read past the end of the packet buffer due to an unsigned integer underflow in `lib/flow.c` in the function `miniflow_extract`, permitting remote bypass of the access control list enforced by the switch.
Why it matters now
EPSS 0.00943 61st percentileScored 2026-11-07
Fix No fix listed No fixed version in the sources yet
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:2.5.0:*:*:*:*:*:*:* | 2.5.0 | Vulnerable | Openvswitch |
- cpe:2.3:a:openvswitch:openvswitch:2.5.0:*:*:*:*:*:*:* Versions 2.5.0 Vulnerable ·Openvswitch
Remediation
No fixed version listed by the sources yet.
Vendor assessments
Red Hat
Red Hat rating: Moderate. Red Hat's page for this CVE →
| Product | Status | Plan or fix |
|---|---|---|
| Red Hat Virtualization 4 | Affected | — |
Not affected: 9 products
- Red Hat Enterprise Linux 7
- 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 10 (Newton)
- 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-2016-10377
- 2026-10-03 Alias added: GHSA-w6j4-9556-fjfj
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-2017-06706 In lib/conntrack.c in the firewall implementation in Open vSwitch (OvS) 2.6.1, there is a… 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
Sources
- CVE-2016-10377 · CVE Program
- CVE-2016-10377 · NVD
- FIRST EPSS
- GHSA-w6j4-9556-fjfj · GitHub Advisory Database · CC BY 4.0
- CVE-2016-10377 · Red Hat security data · CC BY 4.0
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