CVE-2025-0650
ovn: egress ACLs may be bypassed via specially crafted UDP packet
Severity
ImportantRed Hat Product Security
CVSS 3.1
Review impact separately from score.
Published · January 21, 2024
Updated · November 21, 2025
Description
A flaw was found in the Open Virtual Network (OVN). Specially crafted UDP packets may bypass egress access control lists (ACLs) in OVN installations configured with a logical switch with DNS records set on it and if the same switch has any egress ACLs configured. This issue can lead to unauthorized access to virtual machines and containers running on the OVN network.
Statement
Fixes for OpenShift Container Platform ovn component will be consumed from RHEL Fast Datapath.
CVSS score applicability
The CVSS score(s) listed for this vulnerability do not reflect the associated product's status, and are included for informational purposes to better understand the severity of this vulnerability.
Mitigation
Red Hat Product Security has not identified any mitigations at this time. We recommend updating to a known patched version of OVN.
CVSS / CWE
CVSS 3.1 · 8.1CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H
CWE-284 · Improper Access Control