{
    "data_version": "4.0",
    "data_type": "CVE",
    "data_format": "MITRE",
    "CVE_data_meta": {
        "ID": "CVE-2018-16871",
        "ASSIGNER": "secalert@redhat.com",
        "STATE": "PUBLIC"
    },
    "description": {
        "description_data": [
            {
                "lang": "eng",
                "value": "A flaw was found in the Linux kernel's NFS implementation, all versions 3.x and all versions 4.x up to 4.20. An attacker, who is able to mount an exported NFS filesystem, is able to trigger a null pointer dereference by using an invalid NFS sequence. This can panic the machine and deny access to the NFS server. Any outstanding disk writes to the NFS server will be lost."
            }
        ]
    },
    "problemtype": {
        "problemtype_data": [
            {
                "description": [
                    {
                        "lang": "eng",
                        "value": "CWE-476",
                        "cweId": "CWE-476"
                    }
                ]
            }
        ]
    },
    "affects": {
        "vendor": {
            "vendor_data": [
                {
                    "vendor_name": "Red Hat",
                    "product": {
                        "product_data": [
                            {
                                "product_name": "kernel:",
                                "version": {
                                    "version_data": [
                                        {
                                            "version_affected": "=",
                                            "version_value": "all 3.x, all 4.x up to 4.20"
                                        }
                                    ]
                                }
                            }
                        ]
                    }
                }
            ]
        }
    },
    "references": {
        "reference_data": [
            {
                "url": "https://access.redhat.com/errata/RHSA-2019:2696",
                "refsource": "MISC",
                "name": "https://access.redhat.com/errata/RHSA-2019:2696"
            },
            {
                "url": "https://access.redhat.com/errata/RHSA-2019:2730",
                "refsource": "MISC",
                "name": "https://access.redhat.com/errata/RHSA-2019:2730"
            },
            {
                "url": "https://access.redhat.com/errata/RHSA-2020:0740",
                "refsource": "MISC",
                "name": "https://access.redhat.com/errata/RHSA-2020:0740"
            },
            {
                "url": "https://bugzilla.redhat.com/show_bug.cgi?id=CVE-2018-16871",
                "refsource": "MISC",
                "name": "https://bugzilla.redhat.com/show_bug.cgi?id=CVE-2018-16871"
            },
            {
                "url": "https://security.netapp.com/advisory/ntap-20211004-0002/",
                "refsource": "MISC",
                "name": "https://security.netapp.com/advisory/ntap-20211004-0002/"
            },
            {
                "url": "https://support.f5.com/csp/article/K18657134",
                "refsource": "MISC",
                "name": "https://support.f5.com/csp/article/K18657134"
            },
            {
                "url": "https://support.f5.com/csp/article/K18657134?utm_source=f5support&amp%3Butm_medium=RSS",
                "refsource": "MISC",
                "name": "https://support.f5.com/csp/article/K18657134?utm_source=f5support&amp%3Butm_medium=RSS"
            }
        ]
    },
    "impact": {
        "cvss": [
            {
                "attackComplexity": "LOW",
                "attackVector": "NETWORK",
                "availabilityImpact": "HIGH",
                "baseScore": 7.5,
                "baseSeverity": "HIGH",
                "confidentialityImpact": "NONE",
                "integrityImpact": "NONE",
                "privilegesRequired": "NONE",
                "scope": "UNCHANGED",
                "userInteraction": "NONE",
                "vectorString": "CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H",
                "version": "3.0"
            }
        ]
    }
}