{
  "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-2024-26696",
    "sourceURL": "https://www.cve.org/CVERecord?id=CVE-2024-26696",
    "idYear": 2024,
    "status": "PUBLISHED",
    "publishedAt": "2024-04-03T14:54:56.926Z",
    "updatedAt": "2026-05-11T20:02:25.967Z",
    "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": "nilfs2: fix hang in nilfs_lookup_dirty_data_buffers()",
      "summary": "In the Linux kernel, the following vulnerability has been resolved:\n\nnilfs2: fix hang in nilfs_lookup_dirty_data_buffers()\n\nSyzbot reported a hang issue in migrate_pages_batch() called by mbind()\nand nilfs_lookup_dirty_data_buffers() called in the log writer of nilfs2.\n\nWhile migrate_pages_batch() locks a folio and waits for the writeback to\ncomplete, the log writer thread that should bring the writeback to\ncompletion picks up the folio being written back in\nnilfs_lookup_dirty_data_buffers() that it calls for subsequent log\ncreation and was trying to lock the folio.  Thus causing a deadlock.\n\nIn the first place, it is unexpected that folios/pages in the middle of\nwriteback will be updated and become dirty.  Nilfs2 adds a checksum to\nverify the validity of the log being written and uses it for recovery at\nmount, so data changes during writeback are suppressed.  Since this is\nbroken, an unclean shutdown could potentially cause recovery to fail.\n\nInvestigation revealed that the root cause is that the wait for writeback\ncompletion in nilfs_page_mkwrite() is conditional, and if the backing\ndevice does not require stable writes, data may be modified without\nwaiting.\n\nFix these issues by making nilfs_page_mkwrite() wait for writeback to\nfinish regardless of the stable write requirement of the backing device.",
      "affected": [
        {
          "vendor": "Linux",
          "product": "Linux",
          "defaultStatus": "unaffected",
          "versions": [
            {
              "version": "1d1d1a767206fbe5d4c69493b7e6d2a8d08cc0a0",
              "status": "affected",
              "versionType": "git",
              "lessThan": "228742b2ddfb99dfd71e5a307e6088ab6836272e"
            },
            {
              "version": "1d1d1a767206fbe5d4c69493b7e6d2a8d08cc0a0",
              "status": "affected",
              "versionType": "git",
              "lessThan": "862ee4422c38be5c249844a684b00d0dbe9d1e46"
            },
            {
              "version": "1d1d1a767206fbe5d4c69493b7e6d2a8d08cc0a0",
              "status": "affected",
              "versionType": "git",
              "lessThan": "98a4026b22ff440c7f47056481bcbbe442f607d6"
            },
            {
              "version": "1d1d1a767206fbe5d4c69493b7e6d2a8d08cc0a0",
              "status": "affected",
              "versionType": "git",
              "lessThan": "7e9b622bd0748cc104d66535b76d9b3535f9dc0f"
            },
            {
              "version": "1d1d1a767206fbe5d4c69493b7e6d2a8d08cc0a0",
              "status": "affected",
              "versionType": "git",
              "lessThan": "8494ba2c9ea00a54d5b50e69b22c55a8958bce32"
            },
            {
              "version": "1d1d1a767206fbe5d4c69493b7e6d2a8d08cc0a0",
              "status": "affected",
              "versionType": "git",
              "lessThan": "ea5ddbc11613b55e5128c85f57b08f907abd9b28"
            },
            {
              "version": "1d1d1a767206fbe5d4c69493b7e6d2a8d08cc0a0",
              "status": "affected",
              "versionType": "git",
              "lessThan": "e38585401d464578d30f5868ff4ca54475c34f7d"
            },
            {
              "version": "1d1d1a767206fbe5d4c69493b7e6d2a8d08cc0a0",
              "status": "affected",
              "versionType": "git",
              "lessThan": "38296afe3c6ee07319e01bb249aa4bb47c07b534"
            }
          ]
        },
        {
          "vendor": "Linux",
          "product": "Linux",
          "defaultStatus": "affected",
          "versions": [
            {
              "version": "3.9",
              "status": "affected"
            },
            {
              "version": "0",
              "status": "unaffected",
              "versionType": "semver",
              "lessThan": "3.9"
            },
            {
              "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": "*"
            }
          ]
        }
      ]
    }
  }
}