{
  "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-2024-26773",
    "sourceURL": "https://www.cve.org/CVERecord?id=CVE-2024-26773",
    "idYear": 2024,
    "status": "PUBLISHED",
    "publishedAt": "2024-04-03T17:00:59.757Z",
    "updatedAt": "2026-10-15T00:38:30.960Z",
    "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: avoid allocating blocks from corrupted group in ext4_mb_try_best_found()",
      "summary": "In the Linux kernel, the following vulnerability has been resolved:\n\next4: avoid allocating blocks from corrupted group in ext4_mb_try_best_found()\n\nDetermine if the group block bitmap is corrupted before using ac_b_ex in\next4_mb_try_best_found() to avoid allocating blocks from a group with a\ncorrupted block bitmap in the following concurrency and making the\nsituation worse.\n\next4_mb_regular_allocator\n  ext4_lock_group(sb, group)\n  ext4_mb_good_group\n   // check if the group bbitmap is corrupted\n  ext4_mb_complex_scan_group\n   // Scan group gets ac_b_ex but doesn't use it\n  ext4_unlock_group(sb, group)\n                           ext4_mark_group_bitmap_corrupted(group)\n                           // The block bitmap was corrupted during\n                           // the group unlock gap.\n  ext4_mb_try_best_found\n    ext4_lock_group(ac->ac_sb, group)\n    ext4_mb_use_best_found\n      mb_mark_used\n      // Allocating blocks in block bitmap corrupted group",
      "affected": [
        {
          "vendor": "Linux",
          "product": "Linux",
          "defaultStatus": "unaffected",
          "versions": [
            {
              "version": "163a203ddb36c36d4a1c942aececda0cc8d06aa7",
              "status": "affected",
              "versionType": "git",
              "lessThan": "21f8cfe79f776287459343e9cfa6055af61328ea"
            },
            {
              "version": "163a203ddb36c36d4a1c942aececda0cc8d06aa7",
              "status": "affected",
              "versionType": "git",
              "lessThan": "260fc96283c0f594de18a1b045faf6d8fb42874d"
            },
            {
              "version": "163a203ddb36c36d4a1c942aececda0cc8d06aa7",
              "status": "affected",
              "versionType": "git",
              "lessThan": "927794a02169778c9c2e7b25c768ab3ea8c1dc03"
            },
            {
              "version": "163a203ddb36c36d4a1c942aececda0cc8d06aa7",
              "status": "affected",
              "versionType": "git",
              "lessThan": "4c21fa60a6f4606f6214a38f50612b17b2f738f5"
            },
            {
              "version": "163a203ddb36c36d4a1c942aececda0cc8d06aa7",
              "status": "affected",
              "versionType": "git",
              "lessThan": "f97e75fa4e12b0aa0224e83fcbda8853ac2adf36"
            },
            {
              "version": "163a203ddb36c36d4a1c942aececda0cc8d06aa7",
              "status": "affected",
              "versionType": "git",
              "lessThan": "0184747b552d6b5a14db3b7fcc3b792ce64dedd1"
            },
            {
              "version": "163a203ddb36c36d4a1c942aececda0cc8d06aa7",
              "status": "affected",
              "versionType": "git",
              "lessThan": "a2576ae9a35c078e488f2c573e9e6821d651fbbe"
            },
            {
              "version": "163a203ddb36c36d4a1c942aececda0cc8d06aa7",
              "status": "affected",
              "versionType": "git",
              "lessThan": "4530b3660d396a646aad91a787b6ab37cf604b53"
            }
          ]
        },
        {
          "vendor": "Linux",
          "product": "Linux",
          "defaultStatus": "affected",
          "versions": [
            {
              "version": "3.12",
              "status": "affected"
            },
            {
              "version": "0",
              "status": "unaffected",
              "versionType": "semver",
              "lessThan": "3.12"
            },
            {
              "version": "4.19.308",
              "status": "unaffected",
              "versionType": "semver",
              "lessThanOrEqual": "4.19.*"
            },
            {
              "version": "5.4.270",
              "status": "unaffected",
              "versionType": "semver",
              "lessThanOrEqual": "5.4.*"
            },
            {
              "version": "5.10.211",
              "status": "unaffected",
              "versionType": "semver",
              "lessThanOrEqual": "5.10.*"
            },
            {
              "version": "5.15.150",
              "status": "unaffected",
              "versionType": "semver",
              "lessThanOrEqual": "5.15.*"
            },
            {
              "version": "6.1.80",
              "status": "unaffected",
              "versionType": "semver",
              "lessThanOrEqual": "6.1.*"
            },
            {
              "version": "6.6.19",
              "status": "unaffected",
              "versionType": "semver",
              "lessThanOrEqual": "6.6.*"
            },
            {
              "version": "6.7.7",
              "status": "unaffected",
              "versionType": "semver",
              "lessThanOrEqual": "6.7.*"
            },
            {
              "version": "6.8",
              "status": "unaffected",
              "versionType": "original_commit_for_fix",
              "lessThanOrEqual": "*"
            }
          ]
        }
      ]
    }
  }
}