{
  "schemaVersion": 1,
  "attribution": [
    {
      "source": "CISA Known Exploited Vulnerabilities",
      "url": "https://www.cisa.gov/known-exploited-vulnerabilities-catalog",
      "licence": "US government work"
    },
    {
      "source": "GitHub Advisory Database",
      "url": "https://github.com/advisories",
      "licence": "CC BY 4.0"
    },
    {
      "source": "Have I Been Pwned",
      "url": "https://haveibeenpwned.com/",
      "licence": "CC BY 4.0"
    },
    {
      "source": "CVE Program (CVE records)",
      "url": "https://www.cve.org/Legal/TermsOfUse",
      "licence": "CVE Terms of Use",
      "notice": "Copyright © 1999-2026, The MITRE Corporation. CVE is a trademark and the CVE logo is a registered trademark of The MITRE Corporation.",
      "terms": "CVE Usage: MITRE hereby grants you a perpetual, worldwide, non-exclusive, no-charge, royalty-free, irrevocable copyright license to reproduce, prepare derivative works of, publicly display, publicly perform, sublicense, and distribute Common Vulnerabilities and Exposures (CVE™). Any copy you make for such purposes is authorized provided that you reproduce MITRE's copyright designation and this license in any such copy."
    },
    {
      "source": "FIRST EPSS",
      "url": "https://www.first.org/epss/",
      "licence": "free to use; FIRST requests attribution"
    }
  ],
  "record": {
    "id": "CVE-2024-42304",
    "sourceURL": "https://www.cve.org/CVERecord?id=CVE-2024-42304",
    "idYear": 2024,
    "status": "PUBLISHED",
    "publishedAt": "2024-08-17T09:09:10.545Z",
    "updatedAt": "2026-10-15T00:48:16.603Z",
    "importedAt": "2026-10-24T01:57:16.009Z",
    "snapshot": {
      "id": "cve_2026-10-24_midnight_baseline",
      "at": "2026-10-24T00:00:00.000Z",
      "source": "https://github.com/CVEProject/cvelistV5/releases/tag/cve_2026-10-24_0100Z"
    },
    "facts": {
      "title": "ext4: make sure the first directory block is not a hole",
      "summary": "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": [
        {
          "vendor": "Linux",
          "product": "Linux",
          "defaultStatus": "unaffected",
          "versions": [
            {
              "version": "3a17ca864baffc0c6f6e8aad525aa4365775a193",
              "status": "affected",
              "versionType": "git",
              "lessThan": "d81d7e347d1f1f48a5634607d39eb90c161c8afe"
            },
            {
              "version": "4e19d6b65fb4fc42e352ce9883649e049da14743",
              "status": "affected",
              "versionType": "git",
              "lessThan": "e02f9941e8c011aa3eafa799def6a134ce06bcfa"
            },
            {
              "version": "4e19d6b65fb4fc42e352ce9883649e049da14743",
              "status": "affected",
              "versionType": "git",
              "lessThan": "de2a011a13a46468a6e8259db58b1b62071fe136"
            },
            {
              "version": "4e19d6b65fb4fc42e352ce9883649e049da14743",
              "status": "affected",
              "versionType": "git",
              "lessThan": "9771e3d8365ae1dd5e8846a204cb9af14e3e656a"
            },
            {
              "version": "4e19d6b65fb4fc42e352ce9883649e049da14743",
              "status": "affected",
              "versionType": "git",
              "lessThan": "b609753cbbd38f8c0affd4956c0af178348523ac"
            },
            {
              "version": "4e19d6b65fb4fc42e352ce9883649e049da14743",
              "status": "affected",
              "versionType": "git",
              "lessThan": "c3893d9de8ee153baac56d127d844103488133b5"
            },
            {
              "version": "4e19d6b65fb4fc42e352ce9883649e049da14743",
              "status": "affected",
              "versionType": "git",
              "lessThan": "299bc6ffa57e04e74c6cce866d6c0741fb4897a1"
            },
            {
              "version": "4e19d6b65fb4fc42e352ce9883649e049da14743",
              "status": "affected",
              "versionType": "git",
              "lessThan": "f9ca51596bbfd0f9c386dd1c613c394c78d9e5e6"
            },
            {
              "version": "3f0307b0d2d8b333a6964fc4c820dc86896fd1cf",
              "status": "affected",
              "versionType": "git"
            },
            {
              "version": "514631c2225c1fd556c799cc1893fb27b0f48f00",
              "status": "affected",
              "versionType": "git"
            },
            {
              "version": "7f1f86276515f6816a98f6ca3ef99c827d54642f",
              "status": "affected",
              "versionType": "git"
            },
            {
              "version": "5021b7a5bdd6bb859eb648c3da71cdd6aae1d133",
              "status": "affected",
              "versionType": "git"
            },
            {
              "version": "4.19.62",
              "status": "affected",
              "versionType": "semver",
              "lessThan": "4.19.320"
            },
            {
              "version": "4.9.187",
              "status": "affected",
              "versionType": "semver",
              "lessThan": "4.10"
            },
            {
              "version": "4.14.135",
              "status": "affected",
              "versionType": "semver",
              "lessThan": "4.15"
            },
            {
              "version": "5.1.21",
              "status": "affected",
              "versionType": "semver",
              "lessThan": "5.2"
            },
            {
              "version": "5.2.4",
              "status": "affected",
              "versionType": "semver",
              "lessThan": "5.3"
            }
          ]
        },
        {
          "vendor": "Linux",
          "product": "Linux",
          "defaultStatus": "affected",
          "versions": [
            {
              "version": "5.3",
              "status": "affected"
            },
            {
              "version": "0",
              "status": "unaffected",
              "versionType": "semver",
              "lessThan": "5.3"
            },
            {
              "version": "4.19.320",
              "status": "unaffected",
              "versionType": "semver",
              "lessThanOrEqual": "4.19.*"
            },
            {
              "version": "5.4.282",
              "status": "unaffected",
              "versionType": "semver",
              "lessThanOrEqual": "5.4.*"
            },
            {
              "version": "5.10.224",
              "status": "unaffected",
              "versionType": "semver",
              "lessThanOrEqual": "5.10.*"
            },
            {
              "version": "5.15.165",
              "status": "unaffected",
              "versionType": "semver",
              "lessThanOrEqual": "5.15.*"
            },
            {
              "version": "6.1.103",
              "status": "unaffected",
              "versionType": "semver",
              "lessThanOrEqual": "6.1.*"
            },
            {
              "version": "6.6.44",
              "status": "unaffected",
              "versionType": "semver",
              "lessThanOrEqual": "6.6.*"
            },
            {
              "version": "6.10.3",
              "status": "unaffected",
              "versionType": "semver",
              "lessThanOrEqual": "6.10.*"
            },
            {
              "version": "6.11",
              "status": "unaffected",
              "versionType": "original_commit_for_fix",
              "lessThanOrEqual": "*"
            }
          ]
        }
      ]
    }
  }
}