{
    "data_type": "CVE",
    "data_format": "MITRE",
    "data_version": "4.0",
    "CVE_data_meta": {
        "ID": "CVE-2021-4090",
        "ASSIGNER": "secalert@redhat.com",
        "STATE": "PUBLIC"
    },
    "affects": {
        "vendor": {
            "vendor_data": [
                {
                    "vendor_name": "n/a",
                    "product": {
                        "product_data": [
                            {
                                "product_name": "kernel",
                                "version": {
                                    "version_data": [
                                        {
                                            "version_value": "kernel 5.16 rc2"
                                        }
                                    ]
                                }
                            }
                        ]
                    }
                }
            ]
        }
    },
    "problemtype": {
        "problemtype_data": [
            {
                "description": [
                    {
                        "lang": "eng",
                        "value": "CWE-787"
                    }
                ]
            }
        ]
    },
    "references": {
        "reference_data": [
            {
                "refsource": "MISC",
                "name": "https://bugzilla.redhat.com/show_bug.cgi?id=2025101",
                "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2025101"
            },
            {
                "refsource": "MISC",
                "name": "https://lore.kernel.org/linux-nfs/163692036074.16710.5678362976688977923.stgit@klimt.1015granger.net/",
                "url": "https://lore.kernel.org/linux-nfs/163692036074.16710.5678362976688977923.stgit@klimt.1015granger.net/"
            },
            {
                "refsource": "CONFIRM",
                "name": "https://security.netapp.com/advisory/ntap-20220318-0010/",
                "url": "https://security.netapp.com/advisory/ntap-20220318-0010/"
            }
        ]
    },
    "description": {
        "description_data": [
            {
                "lang": "eng",
                "value": "An out-of-bounds (OOB) memory write flaw was found in the NFSD in the Linux kernel. Missing sanity may lead to a write beyond bmval[bmlen-1] in nfsd4_decode_bitmap4 in fs/nfsd/nfs4xdr.c. In this flaw, a local attacker with user privilege may gain access to out-of-bounds memory, leading to a system integrity and confidentiality threat."
            }
        ]
    }
}