Vulnerability PYSEC-2026-882

Low Risk
LOW RISK
CVSS Score: 3.3
Score Range: < 4.0
Low severity vulnerabilities (CVSS < 4.0). Hygiene issues that can accumulate but pose lower immediate risk.
4 months ago
July 06, 2026 at 08:03 AM UTC
OpenStack Nova Changing vnic_type breaks compute service restart
15.1.5 - 23.2.1 and 24.0.0 - 24.1.1 and 25.0.0 - 25.0.1
15.1.5 - 23.2.1 and 24.0.0 - 24.1.1 and 25.0.0 - 25.0.1

Summary

OpenStack Nova Changing vnic_type breaks compute service restart

Details

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.

Impacted packages

Timeline

Published
4 months ago
July 06, 2026 at 08:03 AM UTC
Fixed (23.2.2)
4 years ago
November 04, 2022 at 10:07 AM UTC
Last Modified
4 months ago
July 07, 2026 at 11:45 AM UTC