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Low

OpenStack Nova Changing vnic_type breaks compute service restart

  • Disclosed: 04.08.2022
  • Updated: 11.10.2026 13:18

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 software

Click a technology to see all vulnerabilities affecting it.

PlatformPackageVulnerable versionsFixed in
Python (PyPI) nova < 23.2.2, >= 24.0.0, < 24.1.2, >= 25.0.0, < 25.0.2 23.2.2, 24.1.2, 25.0.2

References

CVSS score 3.3/10
CVSS vector
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:L
Weakness (CWE)
-
Platform
Python (PyPI)
Package
nova
Disclosed
04.08.2022
Updated
11.10.2026 13:18

Sources and licenses

OSV / GitHub Advisory Database - PYSEC-2026-882 - PyPA Advisory Database; CC BY 4.0

OSV / GitHub Advisory Database - GHSA-v725-c588-h936 - CC BY 4.0

Vulnerability history: nova

All published vulnerabilities of this package (Python (PyPI)), newest first. Shows whether this is a one-off slip or a package that needs watching.

All (49) in the archive
Total entries
49
First → latest
08.2012 06.2026
Without a fix
5
Exploited in attacks
0

Severity breakdown

  • Critical 1
  • High 11
  • Medium 29
  • Low 8

Disclosures per year

earlier: 7

Severity:
  1. OpenStack Nova calls qemu-img without format restrictions for resize
    High · 8.2 CVE-2026-24708 >= 32.0.0.0rc1, <= 32.1.0, >= 31.0.0.0rc1, <= 31.2.0, <= 30.2.1 no fix
  2. OpenStack Nova Changing vnic_type breaks compute service restart this entry
    Low · 3.3 CVE-2022-37394 < 23.2.2, >= 24.0.0, < 24.1.2, >= 25.0.0, < 25.0.2 23.2.2, 24.1.2, 25.0.2
  3. OpenStack Cinder, Glance, and Nova contain Uncontrolled Resource Consumption
    High · 7.5 CVE-2015-5162 < 12.0.4 12.0.4
  4. OpenStack Nova logs sensitive context from notification exceptions
    Critical · 9.8 CVE-2017-7214 >= 13.0.0, < 13.1.4, >= 14.0.0, < 14.0.5, >= 15.0.1, < 15.0.2 13.1.4, 14.0.5, 15.0.2
  5. OpenStack Nova Denial of service attack on the compute host
    High · 7.5 CVE-2017-18191 >= 15.0.0, < 15.1.1, >= 16.0.0, < 16.1.2 15.1.1, 16.1.2
  6. OpenStack Nova DoS by rebuilding the same instance with a new image multiple times
    High · 8.6 CVE-2017-17051 < 16.0.4 16.0.4
  7. An issue was discovered in Guest.migrate in virt/libvirt/guest.py in OpenStack Nova before 19.3.1, 20.x before 20.3.1, and 21.0.0. By performing a soft reboot of an instance that has previously underg
    High · 8.3 CVE-2020-17376 < 19.3.1, >= 20.0.0, < 20.3.1, >= 21.0.0, < 21.1.0 19.3.1, 20.3.1, 21.1.0
  8. An issue was discovered in OpenStack Nova before 17.0.12, 18.x before 18.2.2, and 19.x before 19.0.2. If an API request from an authenticated user ends in a fault condition due to an external exceptio
    High · 6.5 CVE-2019-14433 >= 19.0.0, < 19.0.2, < 17.0.12, >= 18.0.0, < 18.2.2 19.0.2, 17.0.12, 18.2.2
  9. OpenStack Nova VMWare driver leaks rescued images
    High · 6.5 CVE-2014-2573 < 12.0.0a0 12.0.0a0
  10. OpenStack Nova Live migration can leak root disk into ephemeral storage
    High · 7.5 CVE-2013-7130 < 12.0.0a0 12.0.0a0
  11. OpenStack Compute Nova Unauthorised access to arbitrary VM using VNC token from deleted VM
    High · 6.5 CVE-2013-0335 < 12.0.0a0 12.0.0a0
  12. OpenStack Compute (Nova) Denial of service via a large number of calls to the addFixedIp function
    High · 6.5 CVE-2013-1838 < 12.0.0a0 12.0.0a0
  13. virt/disk/api.py in OpenStack Compute (Nova) 2012.1.x before 2012.1.2 and Folsom before Folsom-3 allows remote authenticated users to overwrite arbitrary files via a symlink attack on a file in an ima
    High · 6.5 CVE-2012-3447 all versions no fix

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