Cnv: dos through repeatedly calling vm-dump-metrics until virt handler crashes
Priority LOW 30CWE-476Published · Updated
Key facts
- Attack vector
- Network
- Privileges required
- Low
- User interaction
- None
- Attack complexity
- Low
- Impact type
- Denial of service
- Confidentiality · integrity · availability
- None · None · High
- Fix status
- No fix listed
Attack profile from CVSS 3.1 · CNA. Fix status from CNA and GitHub. Impact type from CWE-476.
Summary
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.
Why it matters now
Exploitation None reported CISA SSVC · not in CISA KEV
EPSS 0.00644 51st percentileScored 2026-11-07
Fix No fix listed No fixed version in the sources yet
SSVC decision points
CISA ADP · SSVC 2.0.3
- Exploitation
- None
- Automatable
- No
- Technical impact
- Partial
The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.
Affected products
| Vendor | Product | Affected versions | Fixed in | Status | Source |
|---|---|---|---|---|---|
| — | cnv | 4.15.0 | — | No fix listed | CNA |
| Red Hat | Red Hat OpenShift Virtualization 4 | — | — | Not affected | CNA |
| — | kubevirt.io/kubevirt (Go) | up to 1.2.0 | — | No fix listed | GHSA-vjhf-6xfr-5p9g |
- cnv Vendor— Affected 4.15.0 Fixed in — No fix listed CNA
- Red Hat OpenShift Virtualization 4 VendorRed Hat Affected — Fixed in — Not affected CNA
- kubevirt.io/kubevirt (Go) Vendor— Affected up to 1.2.0 Fixed in — No fix listed GHSA-vjhf-6xfr-5p9g
Remediation
No fixed version listed by the sources yet.
Vendor assessments
Red Hat
Red Hat rating: Moderate. Red Hat's page for this CVE →
Not affected: 1 product
- Red Hat OpenShift Virtualization 4
Timeline
- 2026-10-02 Threatist record created from CVE-2024-31420
- 2026-10-03 Alias added: GHSA-vjhf-6xfr-5p9g
- 2026-10-21 EPSS moved to the 50th–90th percentile
References
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Sources
- CVE-2024-31420 · CVE Program
- CVE-2024-31420 · NVD
- FIRST EPSS
- GHSA-vjhf-6xfr-5p9g · GitHub Advisory Database · CC BY 4.0
- CVE-2024-31420 · Red Hat security data · CC BY 4.0
This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences