{
  "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-2024-26704",
    "sourceURL": "https://www.cve.org/CVERecord?id=CVE-2024-26704",
    "idYear": 2024,
    "status": "PUBLISHED",
    "publishedAt": "2024-04-03T14:55:02.672Z",
    "updatedAt": "2026-08-05T11:26:47.486Z",
    "importedAt": "2026-10-24T01:57:07.518Z",
    "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: fix double-free of blocks due to wrong extents moved_len",
      "summary": "In the Linux kernel, the following vulnerability has been resolved:\n\next4: fix double-free of blocks due to wrong extents moved_len\n\nIn ext4_move_extents(), moved_len is only updated when all moves are\nsuccessfully executed, and only discards orig_inode and donor_inode\npreallocations when moved_len is not zero. When the loop fails to exit\nafter successfully moving some extents, moved_len is not updated and\nremains at 0, so it does not discard the preallocations.\n\nIf the moved extents overlap with the preallocated extents, the\noverlapped extents are freed twice in ext4_mb_release_inode_pa() and\next4_process_freed_data() (as described in commit 94d7c16cbbbd (\"ext4:\nFix double-free of blocks with EXT4_IOC_MOVE_EXT\")), and bb_free is\nincremented twice. Hence when trim is executed, a zero-division bug is\ntriggered in mb_update_avg_fragment_size() because bb_free is not zero\nand bb_fragments is zero.\n\nTherefore, update move_len after each extent move to avoid the issue.",
      "affected": [
        {
          "vendor": "Linux",
          "product": "Linux",
          "defaultStatus": "unaffected",
          "versions": [
            {
              "version": "fcf6b1b729bcd23f2b49a84fb33ffbb44712ee6a",
              "status": "affected",
              "versionType": "git",
              "lessThan": "b4fbb89d722cbb16beaaea234b7230faaaf68c71"
            },
            {
              "version": "fcf6b1b729bcd23f2b49a84fb33ffbb44712ee6a",
              "status": "affected",
              "versionType": "git",
              "lessThan": "afbcad9ae7d6d11608399188f03a837451b6b3a1"
            },
            {
              "version": "fcf6b1b729bcd23f2b49a84fb33ffbb44712ee6a",
              "status": "affected",
              "versionType": "git",
              "lessThan": "d033a555d9a1cf53dbf3301af7199cc4a4c8f537"
            },
            {
              "version": "fcf6b1b729bcd23f2b49a84fb33ffbb44712ee6a",
              "status": "affected",
              "versionType": "git",
              "lessThan": "afba9d11320dad5ce222ac8964caf64b7b4bedb1"
            },
            {
              "version": "fcf6b1b729bcd23f2b49a84fb33ffbb44712ee6a",
              "status": "affected",
              "versionType": "git",
              "lessThan": "185eab30486ba3e7bf8b9c2e049c79a06ffd2bc1"
            },
            {
              "version": "fcf6b1b729bcd23f2b49a84fb33ffbb44712ee6a",
              "status": "affected",
              "versionType": "git",
              "lessThan": "2883940b19c38d5884c8626483811acf4d7e148f"
            },
            {
              "version": "fcf6b1b729bcd23f2b49a84fb33ffbb44712ee6a",
              "status": "affected",
              "versionType": "git",
              "lessThan": "559ddacb90da1d8786dd8ec4fd76bbfa404eaef6"
            },
            {
              "version": "fcf6b1b729bcd23f2b49a84fb33ffbb44712ee6a",
              "status": "affected",
              "versionType": "git",
              "lessThan": "55583e899a5357308274601364741a83e78d6ac4"
            }
          ]
        },
        {
          "vendor": "Linux",
          "product": "Linux",
          "defaultStatus": "affected",
          "versions": [
            {
              "version": "3.18",
              "status": "affected"
            },
            {
              "version": "0",
              "status": "unaffected",
              "versionType": "semver",
              "lessThan": "3.18"
            },
            {
              "version": "4.19.307",
              "status": "unaffected",
              "versionType": "semver",
              "lessThanOrEqual": "4.19.*"
            },
            {
              "version": "5.4.269",
              "status": "unaffected",
              "versionType": "semver",
              "lessThanOrEqual": "5.4.*"
            },
            {
              "version": "5.10.210",
              "status": "unaffected",
              "versionType": "semver",
              "lessThanOrEqual": "5.10.*"
            },
            {
              "version": "5.15.149",
              "status": "unaffected",
              "versionType": "semver",
              "lessThanOrEqual": "5.15.*"
            },
            {
              "version": "6.1.79",
              "status": "unaffected",
              "versionType": "semver",
              "lessThanOrEqual": "6.1.*"
            },
            {
              "version": "6.6.18",
              "status": "unaffected",
              "versionType": "semver",
              "lessThanOrEqual": "6.6.*"
            },
            {
              "version": "6.7.6",
              "status": "unaffected",
              "versionType": "semver",
              "lessThanOrEqual": "6.7.*"
            },
            {
              "version": "6.8",
              "status": "unaffected",
              "versionType": "original_commit_for_fix",
              "lessThanOrEqual": "*"
            }
          ]
        }
      ]
    }
  }
}