CVE-2026-5367 Ovn: ovn: information disclosure via crafted dhcpv6 packets
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.
Problem types: cwe_id: CWE-130
description: Improper Handling of Length Parameter Inconsistency
Affected products: vendor: Red Hat
product: Fast Datapath for Red Hat Enterprise Linux 10
cpes: cpe:/o:redhat:enterprise_linux:10::fastdatapath
default_status: affected
vendor: Red Hat
product: Fast Datapath for Red Hat Enterprise Linux 10
cpes: cpe:/o:redhat:enterprise_linux:10::fastdatapath
default_status: affected
vendor: Red Hat
product: Fast Datapath for Red Hat Enterprise Linux 8
cpes: cpe:/o:redhat:enterprise_linux:8::fastdatapath
default_status: affected
vendor: Red Hat
product: Fast Datapath for Red Hat Enterprise Linux 8
cpes: cpe:/o:redhat:enterprise_linux:8::fastdatapath
default_status: affected
vendor: Red Hat
product: Fast Datapath for Red Hat Enterprise Linux 9
cpes: cpe:/o:redhat:enterprise_linux:9::fastdatapath
default_status: affected
vendor: Red Hat
product: Fast Datapath for Red Hat Enterprise Linux 9
cpes: cpe:/o:redhat:enterprise_linux:9::fastdatapath
default_status: affected
vendor: Red Hat
product: Fast Datapath for Red Hat Enterprise Linux 9
cpes: cpe:/o:redhat:enterprise_linux:9::fastdatapath
default_status: affected
vendor: Red Hat
product: Fast Datapath for Red Hat Enterprise Linux 9
cpes: cpe:/o:redhat:enterprise_linux:9::fastdatapath
default_status: affected
vendor: Red Hat
product: Fast Datapath for Red Hat Enterprise Linux 9
cpes: cpe:/o:redhat:enterprise_linux:9::fastdatapath
default_status: affected
vendor: Red Hat
product: Fast Datapath for RHEL 8
cpes: cpe:/o:redhat:enterprise_linux:8::fastdatapath
default_status: unaffected
vendor: Red Hat
product: Fast Datapath for RHEL 8
cpes: cpe:/o:redhat:enterprise_linux:8::fastdatapath
default_status: unaffected
vendor: Red Hat
product: Fast Datapath for RHEL 8
cpes: cpe:/o:redhat:enterprise_linux:8::fastdatapath
default_status: unaffected
vendor: Red Hat
product: Fast Datapath for RHEL 8
cpes: cpe:/o:redhat:enterprise_linux:8::fastdatapath
default_status: affected
vendor: Red Hat
product: Fast Datapath for RHEL 9
cpes: cpe:/o:redhat:enterprise_linux:9::fastdatapath
default_status: affected
vendor: Red Hat
product: Fast Datapath for RHEL 9
cpes: cpe:/o:redhat:enterprise_linux:9::fastdatapath
default_status: affected
vendor: Red Hat
product: Red Hat OpenShift Container Platform 4
cpes: cpe:/a:redhat:openshift:4
default_status: unaffected
vendor: Red Hat
product: Red Hat OpenShift Container Platform 4
cpes: cpe:/a:redhat:openshift:4
default_status: unaffected
vendor: Red Hat
product: Red Hat OpenShift Container Platform 4
cpes: cpe:/a:redhat:openshift:4
default_status: unaffected
vendor: Red Hat
product: Red Hat OpenShift Container Platform 4
cpes: cpe:/a:redhat:openshift:4
default_status: unaffected
vendor: Red Hat
product: Red Hat OpenShift Container Platform 4
cpes: cpe:/a:redhat:openshift:4
default_status: affected
vendor: Red Hat
product: Red Hat OpenShift Container Platform 4
cpes: cpe:/a:redhat:openshift:4
default_status: unaffected
vendor: Red Hat
product: Red Hat OpenShift Container Platform 4
cpes: cpe:/a:redhat:openshift:4
default_status: affected
vendor: Red Hat
product: Red Hat OpenShift Container Platform 4
cpes: cpe:/a:redhat:openshift:4
default_status: unaffected
vendor: Red Hat
product: Red Hat OpenShift Container Platform 4
cpes: cpe:/a:redhat:openshift:4
default_status: affected
CVSS v3.1: attackComplexity: LOW
attackVector: NETWORK
availabilityImpact: NONE
baseScore: 8.6
baseSeverity: HIGH
confidentialityImpact: HIGH
integrityImpact: NONE
privilegesRequired: NONE
scope: CHANGED
userInteraction: NONE
vectorString: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:N/A:N
version: 3.1
Published: 2026-04-24T12:25:05.024Z