CVE-2022-37394: Openstack Nova

Low severity, CVSS 3.3. EPSS: 0.3% chance of exploitation in the next 30 days.

An issue was discovered in OpenStack Nova before 23.2.2, 24.x before 24.1.2, and 25.x before 25.0.2. By creating a neutron port with the direct vnic_type, creating an instance bound to that port, and then changing the vnic_type of the bound port to macvtap, an authenticated user may cause the compute service to fail to restart, resulting in a possible denial of service. Only Nova deployments configured with SR-IOV are affected.

Affected products

• Openstack Nova: before 23.2.2 (fixed in 23.2.2); from 24.0.0, before 24.1.2 (fixed in 24.1.2); from 25.0.0, before 25.0.2 (fixed in 25.0.2)

Published 2022-08-03. Last modified 2026-06-17.