CVE-2022-37394

Public Exploit

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.

3.3

CVSS

Severity: Low

CVSS 3.1 •

EPSS 0.04%

Third-Party Advisory launchpad.net Third-Party Advisory opendev.org Third-Party Advisory opendev.org

Affected: n/a n/a

References

Link	Tags
https://bugs.launchpad.net/ossa/+bug/1981813	issue tracking exploit third party advisory
https://review.opendev.org/c/openstack/nova/+/849985	third party advisory patch
https://review.opendev.org/c/openstack/nova/+/850003	third party advisory

Frequently Asked Questions

What is the severity of CVE-2022-37394?: CVE-2022-37394 has been scored as a low severity vulnerability.
How to fix CVE-2022-37394?: To fix CVE-2022-37394, make sure you are using an up-to-date version of the affected component(s) by checking the vendor release notes. As for now, there are no other specific guidelines available.
Is CVE-2022-37394 being actively exploited in the wild?: It is possible that CVE-2022-37394 is being exploited or will be exploited in a near future based on public information. According to its EPSS score, there is a ~0% probability that this vulnerability will be exploited by malicious actors in the next 30 days.

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