Tag: Ovn
Issues in Open Virtual Network components used with SDN setups.
| ID | Title | Description | Category | Technology | Tags |
|---|---|---|---|---|---|
| CRE-2024-0018 Medium Impact: 4/10 Mitigation: 5/10 | Neutron Open Virtual Network (OVN) high CPU usage | OVN daemons (e.g., ovn-controller) are stuck in a tight poll loop, driving CPU to 100 %. Logs show “Dropped … due to excessive rate” or “Unreasonably long … poll interval,” slowing port-binding and network traffic. | Networking Problems | neutron | Known ProblemOvnPublic |
| CRE-2025-0027 Low Impact: 7/10 Mitigation: 2/10 | Neutron Open Virtual Network (OVN) and Virtual Interface (VIF) allows port binding to dead agents, causing VIF plug timeouts | In OpenStack deployments using Neutron with the OVN ML2 driver, ports could be bound to agents that were not alive. This behavior led to virtual machines experiencing network interface plug timeouts during provisioning, as the port binding would not complete successfully. | Networking Problems | neutron | NeutronOvnTimeoutNetworkingOpenstackKnown IssuePublic |
| CRE-2025-0040 Low Impact: 6/10 Mitigation: 4/10 | Neutron Open Virtual Network (OVN) fails to bind logical switch due to race condition during load balancer creation | During load balancer creation or other operations involving logical router and logical switch associations, Neutron OVN may raise a `RowNotFound` exception when attempting to reference a logical switch that has just been deleted. This leads to a port binding failure and a rollback of the affected operation. | Networking Problems | neutron | NeutronOvnOpenstackLoad BalancerLogical SwitchOvsdbKnown IssuePublic |