{"cve":"CVE-2022-37394","nvd":{"published":"2022-08-03T07:15:07.757","modified":"2026-06-17T04:55:01.317","status":"Modified","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_v4":null,"cvss_v3":{"version":"3.1","vector":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:L","score":3.3},"cwes":[],"references":["https://bugs.launchpad.net/ossa/+bug/1981813","https://review.opendev.org/c/openstack/nova/+/849985","https://review.opendev.org/c/openstack/nova/+/850003","https://bugs.launchpad.net/ossa/+bug/1981813","https://review.opendev.org/c/openstack/nova/+/849985"],"products":["openstack:nova"],"source":"nvd","synced_at":"2026-10-19T21:34:18.502168378+00:00"},"epss":{"cve":"CVE-2022-37394","score":0.00309,"percentile":0.23734,"date":"2026-10-31"},"kev":null,"osv":[{"id":"GHSA-v725-c588-h936","url":"https://osv.dev/vulnerability/GHSA-v725-c588-h936","summary":"OpenStack Nova Changing vnic_type breaks compute service restart","modified":"2026-07-07T11:56:32.598668213Z","packages":[{"ecosystem":"PyPI","name":"nova","purl":"pkg:pypi/nova","ranges":["<23.2.2"],"fixed":["23.2.2"]},{"ecosystem":"PyPI","name":"nova","purl":"pkg:pypi/nova","ranges":[">=24.0.0 <24.1.2"],"fixed":["24.1.2"]},{"ecosystem":"PyPI","name":"nova","purl":"pkg:pypi/nova","ranges":[">=25.0.0 <25.0.2"],"fixed":["25.0.2"]}]},{"id":"PYSEC-2026-882","url":"https://osv.dev/vulnerability/PYSEC-2026-882","summary":"OpenStack Nova Changing vnic_type breaks compute service restart","modified":"2026-07-07T11:45:15.739964357Z","packages":[{"ecosystem":"PyPI","name":"nova","purl":"pkg:pypi/nova","ranges":["<23.2.2",">=24.0.0 <24.1.2",">=25.0.0 <25.0.2"],"fixed":["23.2.2","24.1.2","25.0.2"]}]}],"attribution":["This product uses the NVD API but is not endorsed or certified by the NVD.","EPSS scores: FIRST Exploit Prediction Scoring System, https://www.first.org/epss","Known exploited vulnerabilities: CISA Known Exploited Vulnerabilities Catalog, https://www.cisa.gov/known-exploited-vulnerabilities-catalog","Package advisories: OSV (https://osv.dev), from the GitHub Advisory Database, PyPA, Go, RustSec and other ecosystem databases, under CC-BY 4.0 or CC0","CVE records: the CVE Program's CVE List (https://www.cve.org), under its terms of use (https://www.cve.org/Legal/TermsOfUse). CVE is a registered trademark of The MITRE Corporation; this product is not affiliated with the CVE Program."]}