{
    "CVE_data_meta": {
        "ASSIGNER": "cve@mitre.org",
        "ID": "CVE-2020-11743",
        "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 4.13.x, allowing guest OS users to cause a denial of service because of a bad error path in GNTTABOP_map_grant. Grant table operations are expected to return 0 for success, and a negative number for errors. Some misplaced brackets cause one error path to return 1 instead of a negative value. The grant table code in Linux treats this condition as success, and proceeds with incorrectly initialised state. A buggy or malicious guest can construct its grant table in such a way that, when a backend domain tries to map a grant, it hits the incorrect error path. This will crash a Linux based dom0 or backend domain."
            }
        ]
    },
    "problemtype": {
        "problemtype_data": [
            {
                "description": [
                    {
                        "lang": "eng",
                        "value": "n/a"
                    }
                ]
            }
        ]
    },
    "references": {
        "reference_data": [
            {
                "url": "https://xenbits.xen.org/xsa/advisory-316.html",
                "refsource": "MISC",
                "name": "https://xenbits.xen.org/xsa/advisory-316.html"
            },
            {
                "refsource": "CONFIRM",
                "name": "http://xenbits.xen.org/xsa/advisory-316.html",
                "url": "http://xenbits.xen.org/xsa/advisory-316.html"
            },
            {
                "refsource": "MLIST",
                "name": "[oss-security] 20200414 Xen Security Advisory 316 v3 (CVE-2020-11743) - Bad error path in GNTTABOP_map_grant",
                "url": "http://www.openwall.com/lists/oss-security/2020/04/14/3"
            },
            {
                "refsource": "FEDORA",
                "name": "FEDORA-2020-440457afe4",
                "url": "https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/YMAW7D2MP6RE4BFI5BZWOBBWGY3VSOFN/"
            },
            {
                "refsource": "FEDORA",
                "name": "FEDORA-2020-295ed0b1e0",
                "url": "https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/5M2XRNCHOGGTJQBZQJ7DCV6ZNAKN3LE2/"
            },
            {
                "refsource": "SUSE",
                "name": "openSUSE-SU-2020:0599",
                "url": "http://lists.opensuse.org/opensuse-security-announce/2020-05/msg00006.html"
            },
            {
                "refsource": "FEDORA",
                "name": "FEDORA-2020-cbc3149753",
                "url": "https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/NVTP4OYHCTRU3ONFJOFJQVNDFB25KLLG/"
            },
            {
                "refsource": "GENTOO",
                "name": "GLSA-202005-08",
                "url": "https://security.gentoo.org/glsa/202005-08"
            },
            {
                "refsource": "DEBIAN",
                "name": "DSA-4723",
                "url": "https://www.debian.org/security/2020/dsa-4723"
            }
        ]
    }
}