CVE-2026-5367— Ovn: ovn: information disclosure via crafted dhcpv6 packets
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I. Basic Information for CVE-2026-5367
Vulnerability Information
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Vulnerability Title
Ovn: ovn: information disclosure via crafted dhcpv6 packets
Source: NVD (National Vulnerability Database)
Vulnerability Description
A flaw was found in OVN (Open Virtual Network). A remote attacker, by sending crafted DHCPv6 (Dynamic Host Configuration Protocol for IPv6) SOLICIT packets with an inflated Client ID length, could cause the ovn-controller to read beyond the bounds of a packet. This out-of-bounds read can lead to the disclosure of sensitive information stored in heap memory, which is then returned to the attacker's virtual machine port.
Source: NVD (National Vulnerability Database)
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:N/A:N
Source: NVD (National Vulnerability Database)
Vulnerability Type
长度参数不一致性处理不恰当
Source: NVD (National Vulnerability Database)
Vulnerability Title
OVN 安全漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
OVN是OVN开源的一个基于虚拟网络技术的数据中心网络虚拟化平台。 OVN存在安全漏洞，该漏洞源于处理特制DHCPv6 SOLICIT数据包时客户端ID长度膨胀，可能导致远程攻击者造成ovn-controller越界读取，泄露堆内存中的敏感信息。
Source: CNNVD (China National Vulnerability Database)
CVSS Information
N/A
Source: CNNVD (China National Vulnerability Database)
Vulnerability Type
N/A
Source: CNNVD (China National Vulnerability Database)
Affected Products
| Vendor | Product | Affected Versions | CPE | Subscribe |
|---|---|---|---|---|
| Red Hat | Fast Datapath for Red Hat Enterprise Linux 8 | 0:21.12.0-145.el8fdp ~ * | cpe:/o:redhat:enterprise_linux:8::fastdatapath | |
| Red Hat | Fast Datapath for Red Hat Enterprise Linux 8 | 0:23.06.4-30.el8fdp ~ * | cpe:/o:redhat:enterprise_linux:8::fastdatapath | |
| Red Hat | Fast Datapath for Red Hat Enterprise Linux 9 | 0:23.06.4-30.el9fdp ~ * | cpe:/o:redhat:enterprise_linux:9::fastdatapath | |
| Red Hat | Fast Datapath for Red Hat Enterprise Linux 9 | 0:23.09.6-16.el9fdp ~ * | cpe:/o:redhat:enterprise_linux:9::fastdatapath | |
| Red Hat | Fast Datapath for Red Hat Enterprise Linux 9 | 0:24.03.7-82.el9fdp ~ * | cpe:/o:redhat:enterprise_linux:9::fastdatapath | |
| Red Hat | Fast Datapath for Red Hat Enterprise Linux 9 | 0:25.03.2-100.el9fdp ~ * | cpe:/o:redhat:enterprise_linux:9::fastdatapath | |
| Red Hat | Fast Datapath for Red Hat Enterprise Linux 9 | 0:25.09.2-103.el9fdp ~ * | cpe:/o:redhat:enterprise_linux:9::fastdatapath | |
| Red Hat | Fast Datapath for RHEL 10 | - | cpe:/o:redhat:enterprise_linux:10::fastdatapath | |
| Red Hat | Fast Datapath for RHEL 10 | - | cpe:/o:redhat:enterprise_linux:10::fastdatapath | |
| Red Hat | Fast Datapath for RHEL 8 | - | cpe:/o:redhat:enterprise_linux:8::fastdatapath | |
| Red Hat | Fast Datapath for RHEL 8 | - | cpe:/o:redhat:enterprise_linux:8::fastdatapath | |
| Red Hat | Fast Datapath for RHEL 8 | - | cpe:/o:redhat:enterprise_linux:8::fastdatapath | |
| Red Hat | Fast Datapath for RHEL 8 | - | cpe:/o:redhat:enterprise_linux:8::fastdatapath | |
| Red Hat | Fast Datapath for RHEL 9 | - | cpe:/o:redhat:enterprise_linux:9::fastdatapath | |
| Red Hat | Fast Datapath for RHEL 9 | - | cpe:/o:redhat:enterprise_linux:9::fastdatapath | |
| Red Hat | Red Hat OpenShift Container Platform 4 | - | cpe:/a:redhat:openshift:4 | |
| Red Hat | Red Hat OpenShift Container Platform 4 | - | cpe:/a:redhat:openshift:4 | |
| Red Hat | Red Hat OpenShift Container Platform 4 | - | cpe:/a:redhat:openshift:4 | |
| Red Hat | Red Hat OpenShift Container Platform 4 | - | cpe:/a:redhat:openshift:4 | |
| Red Hat | Red Hat OpenShift Container Platform 4 | - | cpe:/a:redhat:openshift:4 | |
| Red Hat | Red Hat OpenShift Container Platform 4 | - | cpe:/a:redhat:openshift:4 | |
| Red Hat | Red Hat OpenShift Container Platform 4 | - | cpe:/a:redhat:openshift:4 | |
| Red Hat | Red Hat OpenShift Container Platform 4 | - | cpe:/a:redhat:openshift:4 |
II. Public POCs for CVE-2026-5367
| # | POC Description | Source Link | Shenlong Link |
|---|
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No public POC found.
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- 2455863 – (CVE-2026-5367) CVE-2026-5367 ovn: OVN: Information disclosure via crafted DHCPv6 packetsissue-trackingx_refsource_REDHAT
- https://nvd.nist.gov/vuln/detail/CVE-2026-5367
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V. Comments for CVE-2026-5367
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