CVE-2022-37394

LOW
3.3
CVSS Score
Published: August 3, 2022 at 06:43 AM UTC
Updated: June 17, 2026 at 04:55 AM UTC
1 product affected across 1 vendorNova

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Severity
LOW3.3
Exploit prediction
EPSS 0.3%

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

Our own answer: ranges merged, affected separated from platform-only, with confidence and review flags.

v < 23.2.224.0.0 ≤ v < 24.1.225.0.0 ≤ v < 25.0.2
Affected range stops below 23.2.2, so it looks safe — our inference, not a vendor statement
Affected range stops below 24.1.2, so it looks safe — our inference, not a vendor statement
Affected range stops below 25.0.2, so it looks safe — our inference, not a vendor statement

Remediation

No guide yet

No remediation guidance has been written for this CVE yet. What the record does show:

References (3)

x_refsource_MISCExploitIssue TrackingThird Party Advisory
https://bugs.launchpad.net/ossa/+bug/1981813
x_refsource_MISCPatchThird Party Advisory
https://review.opendev.org/c/openstack/nova/+/849985

CVSS

Attack Vector
LOCAL
Complexity
LOW
Privileges
LOW
User Interaction
NONE
Scope
UNCHANGED
Confidentiality
NONE
Integrity
NONE
Availability
LOW
Vector?

Quick Info

StatusMODIFIED
CWE
NVD-CWE-noinfo

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