CVE-2022-37394
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…
Does this matter?
Lower severity and a low EPSS score (0.31%). Track it; it rarely justifies an emergency change on its own.
Description
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.
- CVSS 3.1
- 3.3 LOWCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:L
- EPSS
- 0.31% probability · 24th percentile
- CISA KEV
- Not listed
- Affected
- openstack/nova
- Source
- cve@mitre.org
References
- https://bugs.launchpad.net/ossa/+bug/1981813Exploit, Issue Tracking, Third Party Advisory
- https://review.opendev.org/c/openstack/nova/+/849985Patch, Third Party Advisory
- https://review.opendev.org/c/openstack/nova/+/850003Third Party Advisory
- https://bugs.launchpad.net/ossa/+bug/1981813Exploit, Issue Tracking, Third Party Advisory
- https://review.opendev.org/c/openstack/nova/+/849985Patch, Third Party Advisory
- https://review.opendev.org/c/openstack/nova/+/850003Third Party Advisory
Source: NVD record, EPSS from FIRST.org, KEV from CISA. Refreshed daily.