GHSA-v725-c588-h936 CVE-2022-37394 PYSEC-2026-882
OpenStack Nova Changing vnic_type breaks compute service restart
- Severity
- 3.3 / 10
- Low · CVSS 3.1
- Exploit chance (EPSS)
- 0.31%
- Chance of exploitation in the next 30 days. Higher than 23.73% of scored vulnerabilities.
- Known exploited
- No
- Not in CISA's catalog
- Weakness
- —
- Not classified
- Fix
23.2.2- Upgrade nova to this version or later
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.
Affected versions
PyPI
| Package | Vulnerable | Fixed in |
|---|---|---|
| nova | < 23.2.2 |
23.2.2 |
| nova | >= 24.0.0, < 24.1.2 |
24.1.2 |
| nova | >= 25.0.0, < 25.0.2 |
25.0.2 |
| nova | < 23.2.2>= 24.0.0, < 24.1.2>= 25.0.0, < 25.0.2 |
23.2.224.1.225.0.2 |
How to fix
Move to the fixed version or later with your package manager, update the lockfile, and run your tests. If the package only arrives through another dependency, upgrade that dependency first. If none of its releases pulls a fixed version yet, force the version with your package manager's override.
nova PyPI → 23.2.2
- pip
pip install --upgrade "nova>=23.2.2"- poetry
poetry add "nova>=23.2.2"- uv
uv add "nova>=23.2.2"
Severity breakdown
CVSS 3.1 3.3
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:L
- Attack vector
- Local
- Attack complexity
- Low
- Privileges required
- Low
- User interaction
- None
- Scope
- Unchanged
- Confidentiality
- None
- Integrity
- None
- Availability
- Low
References
Advisories
Packages
Other links
- github.com/openstack/nova/commit/0c87681135cfb3ce61d2a0392928c1dbc1fe5fde
- github.com/openstack/nova/commit/1a98a1a650d065a8ab3e1c474f3b9fd537dc2206
- github.com/openstack/nova/commit/4954f993680c75fd9d3d507f2dcd00300c9b3d44
- github.com/openstack/nova/commit/a28c82719545d5c8ee7f3ff1361b3a796e05095a
- github.com/openstack/nova/commit/e43bf900dc8ca66578603bed333c56b215b1876e
- github.com/openstack/nova/commit/f8c91eb75fc5504a37fc3b4be1d65d33dbc9b511
- bugs.launchpad.net/ossa/+bug/1981813
- review.opendev.org/c/openstack/nova/+/849985
- review.opendev.org/c/openstack/nova/+/850003
Timeline
- Published
- Last updated by the source
- Latest EPSS score
Related advisories
| Advisory | Severity | Why it's related |
|---|---|---|
| GHSA-mfg3-p6m3-gjgr OpenStack Nova: Nova scheduler hint injection bypasses Placement resource claims and scheduling constraints | High | Also affects nova |
| GHSA-m4f3-qp2w-gwh6 OpenStack Nova calls qemu-img without format restrictions for resize | High | Also affects nova |
| GHSA-rm86-h44c-2r2m OpenStack Nova vulnerable to unauthorized access to potentially sensitive data | Medium | Also affects nova |
| GHSA-r4v4-w9pv-6fph OpenStack Cinder, Glance, and Nova vulnerable to arbitrary file access | Medium | Also affects nova |
| GHSA-7h75-hwxx-qpgc OpenStack Cinder, glance, and Nova vulnerable to Path Traversal | Medium | Also affects nova |
| GHSA-22jm-4hxw-35jf OpenStack Nova can leak consoleauth token into log files | Low | Also affects nova |
| GHSA-43cm-73px-5v4m OpenStack Compute (Nova) Resource limit circumvention in Nova private flavors | Low | Also affects nova |
| GHSA-j6xh-q826-55jw OpenStack Compute (Nova) vulnerable to denial of service via XML Entity Expansion attack | Medium | Also affects nova |
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