{
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    "data_type": "CVE",
    "data_format": "MITRE",
    "CVE_data_meta": {
        "ID": "CVE-2021-47244",
        "ASSIGNER": "cve@kernel.org",
        "STATE": "PUBLIC"
    },
    "description": {
        "description_data": [
            {
                "lang": "eng",
                "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nmptcp: Fix out of bounds when parsing TCP options\n\nThe TCP option parser in mptcp (mptcp_get_options) could read one byte\nout of bounds. When the length is 1, the execution flow gets into the\nloop, reads one byte of the opcode, and if the opcode is neither\nTCPOPT_EOL nor TCPOPT_NOP, it reads one more byte, which exceeds the\nlength of 1.\n\nThis fix is inspired by commit 9609dad263f8 (\"ipv4: tcp_input: fix stack\nout of bounds when parsing TCP options.\")."
            }
        ]
    },
    "problemtype": {
        "problemtype_data": [
            {
                "description": [
                    {
                        "lang": "eng",
                        "value": "n/a"
                    }
                ]
            }
        ]
    },
    "affects": {
        "vendor": {
            "vendor_data": [
                {
                    "vendor_name": "Linux",
                    "product": {
                        "product_data": [
                            {
                                "product_name": "Linux",
                                "version": {
                                    "version_data": [
                                        {
                                            "version_affected": "<",
                                            "version_name": "cec37a6e41aa",
                                            "version_value": "73eeba71dc99"
                                        },
                                        {
                                            "version_value": "not down converted",
                                            "x_cve_json_5_version_data": {
                                                "versions": [
                                                    {
                                                        "version": "5.6",
                                                        "status": "affected"
                                                    },
                                                    {
                                                        "version": "0",
                                                        "lessThan": "5.6",
                                                        "status": "unaffected",
                                                        "versionType": "semver"
                                                    },
                                                    {
                                                        "version": "5.10.46",
                                                        "lessThanOrEqual": "5.10.*",
                                                        "status": "unaffected",
                                                        "versionType": "semver"
                                                    },
                                                    {
                                                        "version": "5.12.13",
                                                        "lessThanOrEqual": "5.12.*",
                                                        "status": "unaffected",
                                                        "versionType": "semver"
                                                    },
                                                    {
                                                        "version": "5.13",
                                                        "lessThanOrEqual": "*",
                                                        "status": "unaffected",
                                                        "versionType": "original_commit_for_fix"
                                                    }
                                                ],
                                                "defaultStatus": "affected"
                                            }
                                        }
                                    ]
                                }
                            }
                        ]
                    }
                }
            ]
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    },
    "references": {
        "reference_data": [
            {
                "url": "https://git.kernel.org/stable/c/73eeba71dc9932970befa009e68272a3d5ec4a58",
                "refsource": "MISC",
                "name": "https://git.kernel.org/stable/c/73eeba71dc9932970befa009e68272a3d5ec4a58"
            },
            {
                "url": "https://git.kernel.org/stable/c/76e02b8905d0691e89e104a882f3bba7dd0f6037",
                "refsource": "MISC",
                "name": "https://git.kernel.org/stable/c/76e02b8905d0691e89e104a882f3bba7dd0f6037"
            },
            {
                "url": "https://git.kernel.org/stable/c/07718be265680dcf496347d475ce1a5442f55ad7",
                "refsource": "MISC",
                "name": "https://git.kernel.org/stable/c/07718be265680dcf496347d475ce1a5442f55ad7"
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