CVE-2022-37394

LowCVSS 3.3/10Last modified Jun 17, 2026

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.

Metrics

CVSS 3.1 3.3/10CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:L

Affected software

Vendor	Product	Versions
n/a	n/a	n/a

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

Timeline

Published: Aug 3, 2022
Last modified: Jun 17, 2026
NVD status: Modified

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