CVE-2022-37394
First published: Wed Aug 03 2022(Updated: )
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.
Credit: cve@mitre.org cve@mitre.org
| Affected Software | Affected Version | How to fix |
|---|---|---|
| OpenStack Nova | <23.2.2 | |
| OpenStack Nova | >=24.0.0<24.1.2 | |
| OpenStack Nova | >=25.0.0<25.0.2 | |
| pip/nova | >=25.0.0<25.0.2 | 25.0.2 |
| pip/nova | >=24.0.0<24.1.2 | 24.1.2 |
| pip/nova | <23.2.2 | 23.2.2 |
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Reference Links
- https://bugs.launchpad.net/ossa/+bug/1981813
- https://review.opendev.org/c/openstack/nova/+/849985
- https://review.opendev.org/c/openstack/nova/+/850003
- https://nvd.nist.gov/vuln/detail/CVE-2022-37394
- https://github.com/openstack/nova/commit/0c87681135cfb3ce61d2a0392928c1dbc1fe5fde
- https://github.com/openstack/nova/commit/1a98a1a650d065a8ab3e1c474f3b9fd537dc2206
- https://github.com/openstack/nova/commit/4954f993680c75fd9d3d507f2dcd00300c9b3d44
- https://github.com/openstack/nova/commit/a28c82719545d5c8ee7f3ff1361b3a796e05095a
- https://github.com/openstack/nova/commit/e43bf900dc8ca66578603bed333c56b215b1876e
- https://github.com/openstack/nova/commit/f8c91eb75fc5504a37fc3b4be1d65d33dbc9b511
- https://github.com/advisories/GHSA-v725-c588-h936 (Advisory)
Frequently Asked Questions
What is the vulnerability ID for this issue?
The vulnerability ID for this issue is CVE-2022-37394.
What is the severity level of CVE-2022-37394?
CVE-2022-37394 has a severity level of low.
What software versions are affected by CVE-2022-37394?
CVE-2022-37394 affects OpenStack Nova versions before 23.2.2, 24.x before 24.1.2, and 25.x before 25.0.2.
How can an authenticated user exploit CVE-2022-37394?
An authenticated user can exploit CVE-2022-37394 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.
Are there any references available for CVE-2022-37394?
Yes, you can find references for CVE-2022-37394 at the following links: [Link 1](https://bugs.launchpad.net/ossa/+bug/1981813), [Link 2](https://review.opendev.org/c/openstack/nova/+/849985), [Link 3](https://review.opendev.org/c/openstack/nova/+/850003).
- collector/nvd-index
- agent/severity
- agent/author
- agent/references
- agent/tags
- agent/type
- agent/event
- agent/description
- agent/remedy
- agent/last-modified-date
- agent/softwarecombine
- agent/first-publish-date
- collector/nvd-cve
- source/NVD
- collector/github-advisory-latest
- source/GitHub
- alias/GHSA-v725-c588-h936
- alias/CVE-2022-37394
- agent/software-canonical-lookup
- vendor/openstack
- canonical/openstack nova
- version/openstack nova/24.0.0
- version/openstack nova/25.0.0
- package-manager/pip