{
    "CVE_data_meta": {
        "ASSIGNER": "cve@mitre.org",
        "ID": "CVE-2019-19581",
        "STATE": "PUBLIC"
    },
    "affects": {
        "vendor": {
            "vendor_data": [
                {
                    "product": {
                        "product_data": [
                            {
                                "product_name": "n/a",
                                "version": {
                                    "version_data": [
                                        {
                                            "version_value": "n/a"
                                        }
                                    ]
                                }
                            }
                        ]
                    },
                    "vendor_name": "n/a"
                }
            ]
        }
    },
    "data_format": "MITRE",
    "data_type": "CVE",
    "data_version": "4.0",
    "description": {
        "description_data": [
            {
                "lang": "eng",
                "value": "An issue was discovered in Xen through 4.12.x allowing 32-bit Arm guest OS users to cause a denial of service (out-of-bounds access) because certain bit iteration is mishandled. In a number of places bitmaps are being used by the hypervisor to track certain state. Iteration over all bits involves functions which may misbehave in certain corner cases: On 32-bit Arm accesses to bitmaps with bit a count which is a multiple of 32, an out of bounds access may occur. A malicious guest may cause a hypervisor crash or hang, resulting in a Denial of Service (DoS). All versions of Xen are vulnerable. 32-bit Arm systems are vulnerable. 64-bit Arm systems are not vulnerable."
            }
        ]
    },
    "problemtype": {
        "problemtype_data": [
            {
                "description": [
                    {
                        "lang": "eng",
                        "value": "n/a"
                    }
                ]
            }
        ]
    },
    "references": {
        "reference_data": [
            {
                "url": "https://xenbits.xen.org/xsa/advisory-307.html",
                "refsource": "MISC",
                "name": "https://xenbits.xen.org/xsa/advisory-307.html"
            },
            {
                "refsource": "FEDORA",
                "name": "FEDORA-2019-6aad703290",
                "url": "https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/D5R73AYE53QA32KTMHUVKCX6E52CIS43/"
            },
            {
                "refsource": "FEDORA",
                "name": "FEDORA-2019-2e12bd3a9a",
                "url": "https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/34HBFTYNMQMWIO2GGK7DB6KV4M6R5YPV/"
            },
            {
                "refsource": "SUSE",
                "name": "openSUSE-SU-2020:0011",
                "url": "http://lists.opensuse.org/opensuse-security-announce/2020-01/msg00011.html"
            },
            {
                "refsource": "DEBIAN",
                "name": "DSA-4602",
                "url": "https://www.debian.org/security/2020/dsa-4602"
            },
            {
                "refsource": "BUGTRAQ",
                "name": "20200114 [SECURITY] [DSA 4602-1] xen security update",
                "url": "https://seclists.org/bugtraq/2020/Jan/21"
            },
            {
                "refsource": "GENTOO",
                "name": "GLSA-202003-56",
                "url": "https://security.gentoo.org/glsa/202003-56"
            }
        ]
    }
}