{"id":"CVE-2026-102623","revision":"98bdd509efc94665b5f3202fa259bb59","records":[{"revision":"98bdd509efc94665b5f3202fa259bb59","observedAt":"2026-10-23T15:48:27.903+00:00","statement":{"source":"cve-program","id":"CVE-2026-102623","aliases":[],"title":"Kubevirt: kubevirt: virt-controller nil-pointer dereference via malformed ephemeral volume","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.","state":0,"publishedAt":"2026-09-29T17:06:07.937+00:00","modifiedAt":"2026-09-29T19:51:25.376+00:00","affected":[{"ecosystem":"https://access.redhat.com/downloads/content/package-browser/","name":"container-native-virtualization/virt-controller","ranges":[],"versions":[],"rawVersionEvidence":"{\n                    \"vendor\": \"Red Hat\",\n                    \"product\": \"Red Hat OpenShift Virtualization 4\",\n                    \"collectionURL\": \"https://access.redhat.com/downloads/content/package-browser/\",\n                    \"packageName\": \"container-native-virtualization/virt-controller\",\n                    \"defaultStatus\": \"affected\",\n                    \"cpes\": [\n                        \"cpe:/a:redhat:container_native_virtualization:4\"\n                    ]\n                }"},{"ecosystem":"https://access.redhat.com/downloads/content/package-browser/","name":"container-native-virtualization/virt-controller-rhel9","ranges":[],"versions":[],"rawVersionEvidence":"{\n                    \"vendor\": \"Red Hat\",\n                    \"product\": \"Red Hat OpenShift Virtualization 4\",\n                    \"collectionURL\": \"https://access.redhat.com/downloads/content/package-browser/\",\n                    \"packageName\": \"container-native-virtualization/virt-controller-rhel9\",\n                    \"defaultStatus\": \"affected\",\n                    \"cpes\": [\n                        \"cpe:/a:redhat:container_native_virtualization:4\"\n                    ]\n                }"}],"metrics":[{"system":"CVSS 3.1","vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H","score":6.5,"severity":"MEDIUM"}],"references":["https://access.redhat.com/security/cve/CVE-2026-102623","https://bugzilla.redhat.com/show_bug.cgi?id=2543219"],"sourceUrl":"https://www.cve.org/CVERecord?id=CVE-2026-102623","license":"CVE Program Terms of Use","key":"cve-program:CVE-2026-102623","identifiers":["CVE-2026-102623"]},"retained":false,"historicalAffected":[]}],"coverage":[]}