Efivar: efivar: denial of service due to stack overflow in device path node parsing_CVE-2026-6862

{
    "lastseen": "",
    "description": "A flaw was found in libefiboot, a component of efivar. The device path node parser in libefiboot fails to validate that each node's Length field is at least 4 bytes, which is the minimum size for an EFI (Extensible Firmware Interface) device path node header. A local user could exploit this vulnerability by providing a specially crafted device path node. This can lead to infinite recursion, causing stack exhaustion and a process crash, resulting in a denial of service (DoS).",
    "published": "2026-04-22T13:45:45.503Z",
    "modified": "2026-04-22T14:28:14.132Z",
    "type": "cve",
    "title": "Efivar: efivar: denial of service due to stack overflow in device path node parsing",
    "source": "redhat",
    "references": "https://access.redhat.com/security/cve/CVE-2026-6862\nhttps://bugzilla.redhat.com/show_bug.cgi?id=2459982",
    "id": "CVE-2026-6862",
    "bulletinFamily": "",
    "cwe": [
        "CWE-674"
    ],
    "cvelist": null,
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    "cvss": {
        "score": 5.5,
        "severity": "MEDIUM",
        "vector": "CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H",
        "version": "3.1"
    },
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    "href": "",
    "category_name": "CVE",
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    "product": "Red Hat Enterprise Linux 10",
    "version": "",
    "vendor": "Red Hat",
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