GHSA-v725-c588-h936 · Severity: low · Ecosystem: pip — OpenStack Nova Changing vnic_type breaks compute service restart
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.
Conclusion & alert: CVE-2022-37394 is rated Exploit Available (50/100): CVSS Low severity, with low exploitation likelihood (EPSS 0.29%). Core evidence: 1 public exploit reference(s) are indexed (Exploit-DB). Mandatory action: Public exploits are available—assess exposure, apply mitigations, and prioritize patching.
Risk is dynamic; we continuously reassess and refresh what is shown on this page as upstream context changes.
| EDB-ID | Source | Kind | Published | Link |
|---|---|---|---|---|
| — | nvd_ref | exploit_tag | Exploit-DB ↗ |
EPSS lead: Daily EPSS estimates relative likelihood of exploitation; percentile ranks this CVE among scored vulnerabilities (higher = more severe relative rank).
| # | Date | Old EPSS score | New EPSS score | Delta (New - Old) |
|---|---|---|---|---|
| 1 | 2026-06-15 | 0.35% | 0.29% | -0.06% |
| 2 | 2026-06-14 | 0.27% | 0.35% | +0.08% |
| 3 | 2026-04-29 | — | 0.27% | — |
Full EPSS history (11 records total)
CVSS metrics for this CVE.
| Base score | Version | Severity | Vector | Exploitability | Impact | Score source |
|---|---|---|---|---|---|---|
| 3.3 | 3.1 | LOW |
|
1.8 | 1.4 | [email protected] |
GHSA-v725-c588-h936 · Severity: low · Ecosystem: pip — OpenStack Nova Changing vnic_type breaks compute service restart
| vendor | priority | summary | link |
|---|---|---|---|
debian
|
not yet assigned | CVE-2022-37394 not yet assigned priority: Debian including 1 source packages (nova), 5 status rows across 5 suites (bookworm, bullseye, forky, sid, trixie): resolved 4, open 1. | https://security-tracker.debian.org/tracker/CVE-2022-37394 |
redhat
|
low | — | https://access.redhat.com/security/cve/CVE-2022-37394 |
suse
|
high | CVE-2022-37394 severity important: SUSE including 13 source package names (openstack-nova, openstack-nova-api, …), 63 product×package rows across 5 product lines (HPE Helion OpenStack 8, SUSE OpenStack Cloud 8, … (5 product lines)): Will Not Fix 63. | https://www.suse.com/security/cve/CVE-2022-37394/ |
ubuntu
|
medium | CVE-2022-37394 medium priority: Ubuntu including 1 source packages (nova), 7 status rows across 7 suites (bionic, focal, jammy, kinetic, trusty, upstream, xenial): not-affected 3, released 2, ignored 1, needs-triage 1. | https://ubuntu.com/security/CVE-2022-37394 |
| URL | Tags |
|---|---|
| https://bugs.launchpad.net/ossa/+bug/1981813 | Exploit Issue Tracking Third Party Advisory |
| https://review.opendev.org/c/openstack/nova/+/849985 | Patch Third Party Advisory |
| https://review.opendev.org/c/openstack/nova/+/850003 | Third Party Advisory |