{"schema":"threatline.record/2","record":{"id":"CVE-2026-102623","aliases":[],"summary":"Kubevirt: kubevirt: virt-controller nil-pointer dereference via malformed ephemeral volume","details":"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.","categories":["Operating systems"],"product":"Red Hat OpenShift Virtualization 4","vendor":"Red Hat","ecosystem":null,"affected_ranges":[{"source":"CVE List","source_url":"https://www.cve.org/CVERecord?id=CVE-2026-102623","source_modified_at":"2026-09-29T19:51:25.376Z","fetched_at":"2026-10-23T18:52:38.922436Z","product":"Red Hat OpenShift Virtualization 4","vendor":"Red Hat","versions":[],"defaultStatus":"affected"},{"source":"CVE List","source_url":"https://www.cve.org/CVERecord?id=CVE-2026-102623","source_modified_at":"2026-09-29T19:51:25.376Z","fetched_at":"2026-10-23T18:52:38.922436Z","product":"Red Hat OpenShift Virtualization 4","vendor":"Red Hat","versions":[],"defaultStatus":"affected"}],"fixed_versions":[],"cvss":6.5,"severity":"Medium","kev":{"listed":false},"epss":{"probability":0.00307,"percentile":0.22288,"score_date":"2026-10-23"},"published_at":"2026-09-29T17:06:07.937Z","modified_at":"2026-09-29T19:51:25.376Z","provenance":[{"source":"CVE List","url":"https://www.cve.org/CVERecord?id=CVE-2026-102623","fetched_at":"2026-10-23T18:52:38.922436Z","source_modified_at":"2026-09-29T19:51:25.376Z"},{"source":"EPSS","url":"https://api.first.org/data/v1/epss?cve=CVE-2026-102623","fetched_at":"2026-10-23T18:42:43.628194Z","source_modified_at":"2026-10-23"}],"sources":["CVE List","EPSS"],"references":[{"source":"CVE List","url":"https://access.redhat.com/security/cve/CVE-2026-102623","tags":["vdb-entry","x_refsource_REDHAT"]},{"source":"CVE List","url":"https://bugzilla.redhat.com/show_bug.cgi?id=2543219","tags":["issue-tracking","x_refsource_REDHAT"]}],"locations":[],"motoko_assessment":{"status":"requires_architecture_review","automatic_remediation":false},"cve_state":"PUBLISHED","cvss_source":"CVE List","ssvc":{"exploitation":"none","automatable":"no","technical_impact":"partial","assessed_at":"2026-09-29T19:51:07.457292Z"},"classification":{"method":"product-first software-layer rules","rules_version":"2.1","matched_on":"product","confidence":"heuristic","reviewed":false},"change_timestamp":"2026-09-29T19:51:25.376Z","content_hash":"1f1a81ce8eac08dc1ca95555333585c4065c2d2a6cb73f55ca48cbe2e85533a0"}}