Vulnerability in OpenStack Nova
CVE-2022-37394
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.
Published · last modified .
CVSS v3 metric
CVSS v3 base score 3.3 (Low). Vector: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:L.
EPSS exploit prediction
EPSS: 0.003 (22.3th percentile), scored .
Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 22nd percentile — 22.3% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.003 · newest: 0.003 · change: 0.000
Affected products
References
- bugs.launchpad.net/ossa/+bug/1981813 (Exploit, Third Party Advisory, Issue Tracking)
- review.opendev.org/c/openstack/nova/+/849985 (Patch, Third Party Advisory)
- review.opendev.org/c/openstack/nova/+/850003 (Third Party Advisory)
Frequently asked questions
- What is CVE-2022-37394?
- CVE-2022-37394 is a low-severity vulnerability in OpenStack Nova. CVSS score: 3.3/10. Published 2022-08-03.
- How severe is CVE-2022-37394?
- Low severity. CVSS v3 base score is 3.3 out of 10.