{
    "data_version": "4.0",
    "data_type": "CVE",
    "data_format": "MITRE",
    "CVE_data_meta": {
        "ID": "CVE-2024-57934",
        "ASSIGNER": "cve@kernel.org",
        "STATE": "PUBLIC"
    },
    "description": {
        "description_data": [
            {
                "lang": "eng",
                "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nfgraph: Add READ_ONCE() when accessing fgraph_array[]\n\nIn __ftrace_return_to_handler(), a loop iterates over the fgraph_array[]\nelements, which are fgraph_ops. The loop checks if an element is a\nfgraph_stub to prevent using a fgraph_stub afterward.\n\nHowever, if the compiler reloads fgraph_array[] after this check, it might\nrace with an update to fgraph_array[] that introduces a fgraph_stub. This\ncould result in the stub being processed, but the stub contains a null\n\"func_hash\" field, leading to a NULL pointer dereference.\n\nTo ensure that the gops compared against the fgraph_stub matches the gops\nprocessed later, add a READ_ONCE(). A similar patch appears in commit\n63a8dfb (\"function_graph: Add READ_ONCE() when accessing fgraph_array[]\")."
            }
        ]
    },
    "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": "37238abe3cb47b8daaa8706c9949f67b2a705cf1",
                                            "version_value": "b68b2a3fbacc7be720ef589d489bcacdd05c6d38"
                                        },
                                        {
                                            "version_value": "not down converted",
                                            "x_cve_json_5_version_data": {
                                                "versions": [
                                                    {
                                                        "version": "6.11",
                                                        "status": "affected"
                                                    },
                                                    {
                                                        "version": "0",
                                                        "lessThan": "6.11",
                                                        "status": "unaffected",
                                                        "versionType": "semver"
                                                    },
                                                    {
                                                        "version": "6.12.9",
                                                        "lessThanOrEqual": "6.12.*",
                                                        "status": "unaffected",
                                                        "versionType": "semver"
                                                    },
                                                    {
                                                        "version": "6.13",
                                                        "lessThanOrEqual": "*",
                                                        "status": "unaffected",
                                                        "versionType": "original_commit_for_fix"
                                                    }
                                                ],
                                                "defaultStatus": "affected"
                                            }
                                        }
                                    ]
                                }
                            }
                        ]
                    }
                }
            ]
        }
    },
    "references": {
        "reference_data": [
            {
                "url": "https://git.kernel.org/stable/c/b68b2a3fbacc7be720ef589d489bcacdd05c6d38",
                "refsource": "MISC",
                "name": "https://git.kernel.org/stable/c/b68b2a3fbacc7be720ef589d489bcacdd05c6d38"
            },
            {
                "url": "https://git.kernel.org/stable/c/d65474033740ded0a4fe9a097fce72328655b41d",
                "refsource": "MISC",
                "name": "https://git.kernel.org/stable/c/d65474033740ded0a4fe9a097fce72328655b41d"
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