{
    "dataType": "CVE_RECORD",
    "dataVersion": "5.1",
    "cveMetadata": {
        "cveId": "CVE-2024-42304",
        "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "state": "PUBLISHED",
        "assignerShortName": "Linux",
        "dateReserved": "2024-07-30T07:40:12.272Z",
        "datePublished": "2024-08-17T09:09:10.545Z",
        "dateUpdated": "2024-09-15T17:53:13.675Z"
    },
    "containers": {
        "cna": {
            "providerMetadata": {
                "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
                "shortName": "Linux",
                "dateUpdated": "2024-09-15T17:53:13.675Z"
            },
            "descriptions": [
                {
                    "lang": "en",
                    "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."
                }
            ],
            "affected": [
                {
                    "product": "Linux",
                    "vendor": "Linux",
                    "defaultStatus": "unaffected",
                    "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
                    "programFiles": [
                        "fs/ext4/namei.c"
                    ],
                    "versions": [
                        {
                            "version": "3a17ca864baf",
                            "lessThan": "d81d7e347d1f",
                            "status": "affected",
                            "versionType": "git"
                        },
                        {
                            "version": "4e19d6b65fb4",
                            "lessThan": "e02f9941e8c0",
                            "status": "affected",
                            "versionType": "git"
                        },
                        {
                            "version": "4e19d6b65fb4",
                            "lessThan": "de2a011a13a4",
                            "status": "affected",
                            "versionType": "git"
                        },
                        {
                            "version": "4e19d6b65fb4",
                            "lessThan": "9771e3d8365a",
                            "status": "affected",
                            "versionType": "git"
                        },
                        {
                            "version": "4e19d6b65fb4",
                            "lessThan": "b609753cbbd3",
                            "status": "affected",
                            "versionType": "git"
                        },
                        {
                            "version": "4e19d6b65fb4",
                            "lessThan": "c3893d9de8ee",
                            "status": "affected",
                            "versionType": "git"
                        },
                        {
                            "version": "4e19d6b65fb4",
                            "lessThan": "299bc6ffa57e",
                            "status": "affected",
                            "versionType": "git"
                        },
                        {
                            "version": "4e19d6b65fb4",
                            "lessThan": "f9ca51596bbf",
                            "status": "affected",
                            "versionType": "git"
                        }
                    ]
                },
                {
                    "product": "Linux",
                    "vendor": "Linux",
                    "defaultStatus": "affected",
                    "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
                    "programFiles": [
                        "fs/ext4/namei.c"
                    ],
                    "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"
                        }
                    ]
                }
            ],
            "references": [
                {
                    "url": "https://git.kernel.org/stable/c/d81d7e347d1f1f48a5634607d39eb90c161c8afe"
                },
                {
                    "url": "https://git.kernel.org/stable/c/e02f9941e8c011aa3eafa799def6a134ce06bcfa"
                },
                {
                    "url": "https://git.kernel.org/stable/c/de2a011a13a46468a6e8259db58b1b62071fe136"
                },
                {
                    "url": "https://git.kernel.org/stable/c/9771e3d8365ae1dd5e8846a204cb9af14e3e656a"
                },
                {
                    "url": "https://git.kernel.org/stable/c/b609753cbbd38f8c0affd4956c0af178348523ac"
                },
                {
                    "url": "https://git.kernel.org/stable/c/c3893d9de8ee153baac56d127d844103488133b5"
                },
                {
                    "url": "https://git.kernel.org/stable/c/299bc6ffa57e04e74c6cce866d6c0741fb4897a1"
                },
                {
                    "url": "https://git.kernel.org/stable/c/f9ca51596bbfd0f9c386dd1c613c394c78d9e5e6"
                }
            ],
            "title": "ext4: make sure the first directory block is not a hole",
            "x_generator": {
                "engine": "bippy-c9c4e1df01b2"
            }
        },
        "adp": [
            {
                "metrics": [
                    {
                        "other": {
                            "type": "ssvc",
                            "content": {
                                "id": "CVE-2024-42304",
                                "role": "CISA Coordinator",
                                "options": [
                                    {
                                        "Exploitation": "none"
                                    },
                                    {
                                        "Automatable": "no"
                                    },
                                    {
                                        "Technical Impact": "partial"
                                    }
                                ],
                                "version": "2.0.3",
                                "timestamp": "2024-09-10T16:10:22.365835Z"
                            }
                        }
                    }
                ],
                "title": "CISA ADP Vulnrichment",
                "providerMetadata": {
                    "orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
                    "shortName": "CISA-ADP",
                    "dateUpdated": "2024-09-12T17:33:28.095Z"
                }
            }
        ]
    }
}