KVM: arm64: nv: Fix handling of XN[0] when !FEAT_XNX_CVE-2026-53200

{
    "lastseen": "",
    "description": "In the Linux kernel, the following vulnerability has been resolved:\n\nKVM: arm64: nv: Fix handling of XN[0] when !FEAT_XNX\n\nXN has already been extracted from its bitfield position so using\nFIELD_PREP() on the mask that clears XN[0] is completely broken, having\nthe effect of unconditionally granting execute permissions...\n\nFix the obvious mistake by manipulating the right bit.",
    "published": "2026-06-25T08:39:08.968Z",
    "modified": "2026-06-28T06:40:18.167Z",
    "type": "cve",
    "title": "KVM: arm64: nv: Fix handling of XN[0] when !FEAT_XNX",
    "source": "Linux",
    "references": "https://git.kernel.org/stable/c/b95976c2ea446044553a5f469c0bae13553d75ab\nhttps://git.kernel.org/stable/c/49b32ddb87a3a109afecea89e55d70f73956b8bc",
    "id": "CVE-2026-53200",
    "bulletinFamily": "",
    "cwe": null,
    "cvelist": null,
    "sourceData": "Linux Linux d93febe2ed2e0491af9d47f0ee6d4b01918877f4\nLinux Linux d93febe2ed2e0491af9d47f0ee6d4b01918877f4\nLinux Linux 6.19",
    "sourceHref": "",
    "cvss": {
        "score": 8.8,
        "severity": "HIGH",
        "vector": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H",
        "version": "3.1"
    },
    "cvss2": [],
    "cvss3": {
        "version": "",
        "vectorString": "",
        "baseScore": 0,
        "baseSeverity": "",
        "attackVector": "",
        "attackComplexity": "",
        "privilegesRequired": "",
        "userInteraction": "",
        "scope": "",
        "confidentialityImpact": "",
        "integrityImpact": "",
        "availabilityImpact": "",
        "cvssV3": {
            "version": "",
            "vectorString": "",
            "baseScore": 0,
            "baseSeverity": "",
            "attackVector": "",
            "attackComplexity": "",
            "privilegesRequired": "",
            "userInteraction": "",
            "scope": "",
            "confidentialityImpact": "",
            "integrityImpact": "",
            "availabilityImpact": ""
        }
    },
    "href": "",
    "category_name": "CVE",
    "post_link": "",
    "product": "Linux",
    "version": "d93febe2ed2e0491af9d47f0ee6d4b01918877f4",
    "vendor": "Linux",
    "ai_description": "KVM arm64 nv vulnerability allowing unconditional execute permissions",
    "ai_severity": "High",
    "ai_vendor": "Linux",
    "ai_product": "KVM",
    "ai_version": "6.19",
    "ai_score": 8.8
}