A flaw was found in KubeVirt. An authenticated user with permission to create Virtual Machine Instances (VMIs) can cause a Denial of Service (DoS) by submitting a virtual machine definition with an empty ephemeral volume. The virt-controller component fails to properly validate the volume configuration, leading to an unhandled exception and application crash during processing. Because the malformed definition persists in the cluster, the controller enters a continuous crash loop, disrupting virtual machine lifecycle operations across the entire environment.
Metrics
Affected Vendors & Products
References
History
Wed, 30 Sep 2026 16:45:00 +0000
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| First Time appeared |
Kubevirt
Kubevirt kubevirt |
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| Vendors & Products |
Kubevirt
Kubevirt kubevirt |
Wed, 30 Sep 2026 00:15:00 +0000
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threat_severity
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threat_severity
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Tue, 29 Sep 2026 20:30:00 +0000
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ssvc
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Tue, 29 Sep 2026 17:15:00 +0000
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| Description | A flaw was found in KubeVirt. An authenticated user with permission to create Virtual Machine Instances (VMIs) can cause a Denial of Service (DoS) by submitting a virtual machine definition with an empty ephemeral volume. The virt-controller component fails to properly validate the volume configuration, leading to an unhandled exception and application crash during processing. Because the malformed definition persists in the cluster, the controller enters a continuous crash loop, disrupting virtual machine lifecycle operations across the entire environment. | |
| Title | Kubevirt: kubevirt: virt-controller nil-pointer dereference via malformed ephemeral volume | |
| First Time appeared |
Redhat
Redhat container Native Virtualization |
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| Weaknesses | CWE-476 | |
| CPEs | cpe:/a:redhat:container_native_virtualization:4 | |
| Vendors & Products |
Redhat
Redhat container Native Virtualization |
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| References |
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| Metrics |
cvssV3_1
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Status: PUBLISHED
Assigner: redhat
Published: 2026-09-29T17:06:07.937Z
Updated: 2026-09-29T19:51:25.376Z
Reserved: 2026-09-29T14:35:37.210Z
Link: CVE-2026-102623
Updated: 2026-09-29T19:51:15.534Z
Status : Awaiting Analysis
Published: 2026-09-29T17:17:06.843
Modified: 2026-09-29T21:29:07.663
Link: CVE-2026-102623