Virtio-win: virtio-win: denial of service via unvalidated descriptor count in unmap request_CVE-2026-5164

{
    "lastseen": "",
    "description": "A flaw was found in virtio-win. The `RhelDoUnMap()` function does not properly validate the number of descriptors provided by a user during an unmap request. A local user could exploit this input validation vulnerability by supplying an excessive number of descriptors, leading to a buffer overrun. This can cause a system crash, resulting in a Denial of Service (DoS).",
    "published": "2026-03-30T15:02:21.663Z",
    "modified": "2026-03-30T15:30:38.407Z",
    "type": "cve",
    "title": "Virtio-win: virtio-win: denial of service via unvalidated descriptor count in unmap request",
    "source": "redhat",
    "references": "https://access.redhat.com/security/cve/CVE-2026-5164\nhttps://bugzilla.redhat.com/show_bug.cgi?id=2453014\nhttps://github.com/virtio-win/kvm-guest-drivers-windows/pull/1504",
    "id": "CVE-2026-5164",
    "bulletinFamily": "",
    "cwe": [
        "CWE-120"
    ],
    "cvelist": null,
    "sourceData": "",
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    "cvss": {
        "score": 6.7,
        "severity": "MEDIUM",
        "vector": "CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H",
        "version": "3.1"
    },
    "cvss2": [],
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        "baseScore": 0,
        "baseSeverity": "",
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        "privilegesRequired": "",
        "userInteraction": "",
        "scope": "",
        "confidentialityImpact": "",
        "integrityImpact": "",
        "availabilityImpact": "",
        "cvssV3": {
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    },
    "href": "",
    "category_name": "CVE",
    "post_link": "",
    "product": "Red Hat Enterprise Linux 10",
    "version": "",
    "vendor": "Red Hat",
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    "ai_score": 0
}