LOW3.3
PYSEC-2026-882
OpenStack Nova Changing vnic_type breaks compute service restart
Quick fix
PYSEC-2026-882 — nova: upgrade to the fixed version with the command below.
pip install --upgrade 'nova>=23.2.2'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.
Are you affected?
Enter the version of the package you're using.
Affected packages
References
- https://nvd.nist.gov/vuln/detail/CVE-2022-37394[ADVISORY]
- https://github.com/openstack/nova/commit/0c87681135cfb3ce61d2a0392928c1dbc1fe5fde[WEB]
- https://github.com/openstack/nova/commit/1a98a1a650d065a8ab3e1c474f3b9fd537dc2206[WEB]
- https://github.com/openstack/nova/commit/4954f993680c75fd9d3d507f2dcd00300c9b3d44[WEB]
- https://github.com/openstack/nova/commit/a28c82719545d5c8ee7f3ff1361b3a796e05095a[WEB]
- https://github.com/openstack/nova/commit/e43bf900dc8ca66578603bed333c56b215b1876e[WEB]
- https://github.com/openstack/nova/commit/f8c91eb75fc5504a37fc3b4be1d65d33dbc9b511[WEB]
- https://bugs.launchpad.net/ossa/+bug/1981813[WEB]
- https://github.com/openstack/nova[PACKAGE]
- https://review.opendev.org/c/openstack/nova/+/849985[WEB]
- https://review.opendev.org/c/openstack/nova/+/850003[WEB]
- https://pypi.org/project/nova[PACKAGE]
- https://github.com/advisories/GHSA-v725-c588-h936[ADVISORY]