{
    "data_version": "4.0",
    "data_type": "CVE",
    "data_format": "MITRE",
    "CVE_data_meta": {
        "ID": "CVE-2024-42304",
        "ASSIGNER": "cve@kernel.org",
        "STATE": "PUBLIC"
    },
    "description": {
        "description_data": [
            {
                "lang": "eng",
                "value": "In the Linux kernel, the following vulnerability has been resolved:\n\next4: make sure the first directory block is not a hole\n\nThe syzbot constructs a directory that has no dirblock but is non-inline,\ni.e. the first directory block is a hole. And no errors are reported when\ncreating files in this directory in the following flow.\n\n    ext4_mknod\n     ...\n      ext4_add_entry\n        // Read block 0\n        ext4_read_dirblock(dir, block, DIRENT)\n          bh = ext4_bread(NULL, inode, block, 0)\n          if (!bh && (type == INDEX || type == DIRENT_HTREE))\n          // The first directory block is a hole\n          // But type == DIRENT, so no error is reported.\n\nAfter that, we get a directory block without '.' and '..' but with a valid\ndentry. This may cause some code that relies on dot or dotdot (such as\nmake_indexed_dir()) to crash.\n\nTherefore when ext4_read_dirblock() finds that the first directory block\nis a hole report that the filesystem is corrupted and return an error to\navoid loading corrupted data from disk causing something bad."
            }
        ]
    },
    "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": "3a17ca864baf",
                                            "version_value": "d81d7e347d1f"
                                        },
                                        {
                                            "version_affected": "<",
                                            "version_name": "4e19d6b65fb4",
                                            "version_value": "e02f9941e8c0"
                                        },
                                        {
                                            "version_value": "not down converted",
                                            "x_cve_json_5_version_data": {
                                                "versions": [
                                                    {
                                                        "version": "5.3",
                                                        "status": "affected"
                                                    },
                                                    {
                                                        "version": "0",
                                                        "lessThan": "5.3",
                                                        "status": "unaffected",
                                                        "versionType": "custom"
                                                    },
                                                    {
                                                        "version": "4.19.320",
                                                        "lessThanOrEqual": "4.19.*",
                                                        "status": "unaffected",
                                                        "versionType": "custom"
                                                    },
                                                    {
                                                        "version": "5.4.282",
                                                        "lessThanOrEqual": "5.4.*",
                                                        "status": "unaffected",
                                                        "versionType": "custom"
                                                    },
                                                    {
                                                        "version": "5.10.224",
                                                        "lessThanOrEqual": "5.10.*",
                                                        "status": "unaffected",
                                                        "versionType": "custom"
                                                    },
                                                    {
                                                        "version": "5.15.165",
                                                        "lessThanOrEqual": "5.15.*",
                                                        "status": "unaffected",
                                                        "versionType": "custom"
                                                    },
                                                    {
                                                        "version": "6.1.103",
                                                        "lessThanOrEqual": "6.1.*",
                                                        "status": "unaffected",
                                                        "versionType": "custom"
                                                    },
                                                    {
                                                        "version": "6.6.44",
                                                        "lessThanOrEqual": "6.6.*",
                                                        "status": "unaffected",
                                                        "versionType": "custom"
                                                    },
                                                    {
                                                        "version": "6.10.3",
                                                        "lessThanOrEqual": "6.10.*",
                                                        "status": "unaffected",
                                                        "versionType": "custom"
                                                    },
                                                    {
                                                        "version": "6.11",
                                                        "lessThanOrEqual": "*",
                                                        "status": "unaffected",
                                                        "versionType": "original_commit_for_fix"
                                                    }
                                                ],
                                                "defaultStatus": "affected"
                                            }
                                        }
                                    ]
                                }
                            }
                        ]
                    }
                }
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        }
    },
    "references": {
        "reference_data": [
            {
                "url": "https://git.kernel.org/stable/c/d81d7e347d1f1f48a5634607d39eb90c161c8afe",
                "refsource": "MISC",
                "name": "https://git.kernel.org/stable/c/d81d7e347d1f1f48a5634607d39eb90c161c8afe"
            },
            {
                "url": "https://git.kernel.org/stable/c/e02f9941e8c011aa3eafa799def6a134ce06bcfa",
                "refsource": "MISC",
                "name": "https://git.kernel.org/stable/c/e02f9941e8c011aa3eafa799def6a134ce06bcfa"
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                "name": "https://git.kernel.org/stable/c/de2a011a13a46468a6e8259db58b1b62071fe136"
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                "name": "https://git.kernel.org/stable/c/9771e3d8365ae1dd5e8846a204cb9af14e3e656a"
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                "name": "https://git.kernel.org/stable/c/b609753cbbd38f8c0affd4956c0af178348523ac"
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                "name": "https://git.kernel.org/stable/c/c3893d9de8ee153baac56d127d844103488133b5"
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                "name": "https://git.kernel.org/stable/c/299bc6ffa57e04e74c6cce866d6c0741fb4897a1"
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                "url": "https://git.kernel.org/stable/c/f9ca51596bbfd0f9c386dd1c613c394c78d9e5e6",
                "refsource": "MISC",
                "name": "https://git.kernel.org/stable/c/f9ca51596bbfd0f9c386dd1c613c394c78d9e5e6"
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