Kubevirt: virt-handler-rhel9: kubevirt: unbounded virtio-serial readline in virt-handler causes oom denial of service_CVE-2026-13322

{
    "lastseen": "",
    "description": "A flaw was found in KubeVirt's downward metrics virtio-serial server. The server reads guest requests using textproto.Reader.ReadLine(), which buffers input indefinitely until a newline character is received, with no length limit or read deadline. A user with access to a VM guest that has the downward metrics virtio-serial device configured can write a continuous byte stream to the device, causing unbounded memory allocation in the virt-handler process until it is OOM-killed.",
    "published": "2026-06-26T00:04:07.651Z",
    "modified": "2026-06-26T00:04:07.651Z",
    "type": "cve",
    "title": "Kubevirt: virt-handler-rhel9: kubevirt: unbounded virtio-serial readline in virt-handler causes oom denial of service",
    "source": "redhat",
    "references": "https://access.redhat.com/security/cve/CVE-2026-13322\nhttps://bugzilla.redhat.com/show_bug.cgi?id=2492681",
    "id": "CVE-2026-13322",
    "bulletinFamily": "",
    "cwe": [
        "CWE-770"
    ],
    "cvelist": null,
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    "cvss": {
        "score": 3.8,
        "severity": "LOW",
        "vector": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:N/I:N/A:L",
        "version": "3.1"
    },
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    "href": "",
    "category_name": "CVE",
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    "product": "Red Hat OpenShift Virtualization 4",
    "version": "",
    "vendor": "Red Hat",
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