Track vulnerabilities like this one. Sign up free to get alerted when software you use is affected.
3.3

OpenStack Nova: SR-IOV Restart Failure via Malicious Port Configuration

CVE-2022-37394 · published 4 years ago
Summary

An attacker can cause the OpenStack Nova compute service to crash, making the system unavailable. This happens when a user with permission creates a specific type of network port and then changes its settings. To fix this issue, update your OpenStack Nova installation to the latest version, especially if you're using SR-IOV.

What to do
  • Update openstack nova to version 23.2.2.
  • Update openstack nova to version 24.1.2.
  • Update openstack nova to version 25.0.2.
  • Update debian nova to version 2:26.0.0~rc1-3.
Affected software
Ecosystem VendorProductAffected versions
– openstack nova < 23.2.2
>= 24.0.0, < 24.1.2
>= 25.0.0, < 25.0.2
cpe:2.3:a:openstack:nova:*:*:*:*:*:*:*:*
pip openstack nova < 23.2.2
>= 24.0.0, < 24.1.2
>= 25.0.0, < 25.0.2
Fix: upgrade to 23.2.2
Debian:12 debian nova < 2:26.0.0~rc1-3
Fix: upgrade to 2:26.0.0~rc1-3
Original advisory text
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, a...
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.
References
Fix within
Internet-facing 60 days
Internal At next upgrade
  • Not known to be exploited
  • Needs hands-on effort to exploit (estimated)
  • Gives an attacker partial control (estimated)
Severity
3.3 Low
Exploitation
<1% chance of attack within 30 days
Timeline
Published3 Aug 2022
Updated4 Nov 2026
First seen6 Mar 2026
Sources
GHSA-v725-c588-h936 · GHSA
CVE-2022-37394 · NVD
CVE-2022-37394 · OSV
DEBIAN-CVE-2022-37394 · OSV
Track software like this
Free during beta