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    "data_type": "CVE",
    "data_format": "MITRE",
    "CVE_data_meta": {
        "ID": "CVE-2021-47289",
        "ASSIGNER": "cve@kernel.org",
        "STATE": "PUBLIC"
    },
    "description": {
        "description_data": [
            {
                "lang": "eng",
                "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nACPI: fix NULL pointer dereference\n\nCommit 71f642833284 (\"ACPI: utils: Fix reference counting in\nfor_each_acpi_dev_match()\") started doing \"acpi_dev_put()\" on a pointer\nthat was possibly NULL.  That fails miserably, because that helper\ninline function is not set up to handle that case.\n\nJust make acpi_dev_put() silently accept a NULL pointer, rather than\ncalling down to put_device() with an invalid offset off that NULL\npointer."
            }
        ]
    },
    "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": "1da177e4c3f4",
                                            "version_value": "38f54217b423"
                                        },
                                        {
                                            "version_value": "not down converted",
                                            "x_cve_json_5_version_data": {
                                                "versions": [
                                                    {
                                                        "version": "5.4.139",
                                                        "lessThanOrEqual": "5.4.*",
                                                        "status": "unaffected",
                                                        "versionType": "custom"
                                                    },
                                                    {
                                                        "version": "5.10.57",
                                                        "lessThanOrEqual": "5.10.*",
                                                        "status": "unaffected",
                                                        "versionType": "custom"
                                                    },
                                                    {
                                                        "version": "5.13.6",
                                                        "lessThanOrEqual": "5.13.*",
                                                        "status": "unaffected",
                                                        "versionType": "custom"
                                                    },
                                                    {
                                                        "version": "5.14",
                                                        "lessThanOrEqual": "*",
                                                        "status": "unaffected",
                                                        "versionType": "original_commit_for_fix"
                                                    }
                                                ],
                                                "defaultStatus": "affected"
                                            }
                                        }
                                    ]
                                }
                            }
                        ]
                    }
                }
            ]
        }
    },
    "references": {
        "reference_data": [
            {
                "url": "https://git.kernel.org/stable/c/38f54217b423c0101d03a00feec6fb8ec608b12e",
                "refsource": "MISC",
                "name": "https://git.kernel.org/stable/c/38f54217b423c0101d03a00feec6fb8ec608b12e"
            },
            {
                "url": "https://git.kernel.org/stable/c/cae3fa3d8165761f3000f523b11cfa1cd35206bc",
                "refsource": "MISC",
                "name": "https://git.kernel.org/stable/c/cae3fa3d8165761f3000f523b11cfa1cd35206bc"
            },
            {
                "url": "https://git.kernel.org/stable/c/ccf23a0888077a25a0793a746c3941db2a7562e4",
                "refsource": "MISC",
                "name": "https://git.kernel.org/stable/c/ccf23a0888077a25a0793a746c3941db2a7562e4"
            },
            {
                "url": "https://git.kernel.org/stable/c/fc68f42aa737dc15e7665a4101d4168aadb8e4c4",
                "refsource": "MISC",
                "name": "https://git.kernel.org/stable/c/fc68f42aa737dc15e7665a4101d4168aadb8e4c4"
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