openstack-nova: Compute service fails to restart if the vnic_type of a bound port changed from direct to macvtap
Published Aug 3, 2022
3.3
LOWCVSS 3.1
EPSS 0.31%
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 products
No data.
No data.
Red Hat OpenStack Platform 16.2
openstack-nova-1:20.6.2-2.20230308185148.fc01371.el8ost
Fixed · RHSA-2023:1948
Red Hat OpenStack Platform 13 (Queens)
openstack-nova
Out of support scope
Red Hat OpenStack Platform 16.1
openstack-nova
Fix deferred
Red Hat OpenStack Platform 17.0
openstack-nova
Out of support scope
| Product | Package | State | Advisory |
|---|---|---|---|
| Red Hat OpenStack Platform 16.2 | openstack-nova-1:20.6.2-2.20230308185148.fc01371.el8ost | Fixed | RHSA-2023:1948 |
| Red Hat OpenStack Platform 13 (Queens) | openstack-nova | Out of support scope | n/a |
| Red Hat OpenStack Platform 16.1 | openstack-nova | Fix deferred | n/a |
| Red Hat OpenStack Platform 17.0 | openstack-nova | Out of support scope | n/a |
No package ranges for this CVE.
Remediation
No remediation recorded yet.
Metrics
No CVSS v4.0 score for this CVE.
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:L
No CVSS v3.0 score for this CVE.
No CVSS v2.0 score for this CVE.
This CVE is not in the KEV list.
No CISA SSVC assessment for this CVE yet.
Estimated probability of exploitation in the wild in the next 30 days (FIRST EPSS). As of Oct 1, 2026.
Score over time
2022–2026- EPSS v2
- EPSS v3
- EPSS v4
- EPSS v5
Percentile over time
- EPSS v2
- EPSS v3
- EPSS v4
- EPSS v5
Table of values (10 key points)
Flat stretches are collapsed; showing up to 120 newest points.
| Date | Score | Percentile | Model |
|---|---|---|---|
| Oct 1, 2026 | 0.31% (0.00309) | 21.42th | v5 (v2026.06.15) |
| Jun 15, 2026 | 0.29% (0.00294) | 20.86th | v5 (v2026.06.15) |
| Mar 17, 2025 | 0.04% (0.00036) | 7.17th | v4 (v2025.03.14) |
| Dec 12, 2024 | 0.06% (0.00061) | 27.91th | v3 (v2023.03.01) |
| May 4, 2024 | 0.05% (0.00047) | 16.23th | v3 (v2023.03.01) |
| Mar 2, 2024 | 0.05% (0.00047) | 14.23th | v3 (v2023.03.01) |
| Mar 7, 2023 | 0.04% (0.00045) | 12.21th | v3 (v2023.03.01) |
| Mar 6, 2023 | 0.89% (0.00890) | 30.33th | v2 (v2022.01.01) |
| Feb 23, 2023 | 0.89% (0.00890) | 30.25th | v2 (v2022.01.01) |
| Aug 3, 2022 | 0.89% (0.00890) | 28.24th | v2 (v2022.01.01) |
References (14)
- https://access.redhat.com/security/cve/CVE-2022-37394 Vendor Advisory
- https://bugs.launchpad.net/ossa/+bug/1981813 x_refsource_MISCExploitIssue TrackingThird Party Advisory
- https://bugzilla.redhat.com/show_bug.cgi?id=2117333 Issue Tracking
- https://github.com/advisories/GHSA-v725-c588-h936 Advisory
- 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://nvd.nist.gov/vuln/detail/CVE-2022-37394
- https://review.opendev.org/c/openstack/nova/+/849985 x_refsource_MISCPatchThird Party Advisory
- https://review.opendev.org/c/openstack/nova/+/850003 x_refsource_MISCThird Party Advisory
- https://www.cve.org/CVERecord?id=CVE-2022-37394
Change history (0)
No recorded changes yet.