{
  "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-2024-26685",
    "sourceURL": "https://www.cve.org/CVERecord?id=CVE-2024-26685",
    "idYear": 2024,
    "status": "PUBLISHED",
    "publishedAt": "2024-04-03T14:54:47.688Z",
    "updatedAt": "2026-05-23T15:36:46.794Z",
    "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 potential bug in end_buffer_async_write",
      "summary": "In the Linux kernel, the following vulnerability has been resolved:\n\nnilfs2: fix potential bug in end_buffer_async_write\n\nAccording to a syzbot report, end_buffer_async_write(), which handles the\ncompletion of block device writes, may detect abnormal condition of the\nbuffer async_write flag and cause a BUG_ON failure when using nilfs2.\n\nNilfs2 itself does not use end_buffer_async_write().  But, the async_write\nflag is now used as a marker by commit 7f42ec394156 (\"nilfs2: fix issue\nwith race condition of competition between segments for dirty blocks\") as\na means of resolving double list insertion of dirty blocks in\nnilfs_lookup_dirty_data_buffers() and nilfs_lookup_node_buffers() and the\nresulting crash.\n\nThis modification is safe as long as it is used for file data and b-tree\nnode blocks where the page caches are independent.  However, it was\nirrelevant and redundant to also introduce async_write for segment summary\nand super root blocks that share buffers with the backing device.  This\nled to the possibility that the BUG_ON check in end_buffer_async_write\nwould fail as described above, if independent writebacks of the backing\ndevice occurred in parallel.\n\nThe use of async_write for segment summary buffers has already been\nremoved in a previous change.\n\nFix this issue by removing the manipulation of the async_write flag for\nthe remaining super root block buffer.",
      "affected": [
        {
          "vendor": "Linux",
          "product": "Linux",
          "defaultStatus": "unaffected",
          "versions": [
            {
              "version": "7f42ec3941560f0902fe3671e36f2c20ffd3af0a",
              "status": "affected",
              "versionType": "git",
              "lessThan": "c4a09fdac625e64abe478dcf88bfa20406616928"
            },
            {
              "version": "7f42ec3941560f0902fe3671e36f2c20ffd3af0a",
              "status": "affected",
              "versionType": "git",
              "lessThan": "d31c8721e816eff5ca6573cc487754f357c093cd"
            },
            {
              "version": "7f42ec3941560f0902fe3671e36f2c20ffd3af0a",
              "status": "affected",
              "versionType": "git",
              "lessThan": "f3e4963566f58726d3265a727116a42b591f6596"
            },
            {
              "version": "7f42ec3941560f0902fe3671e36f2c20ffd3af0a",
              "status": "affected",
              "versionType": "git",
              "lessThan": "8fa90634ec3e9cc50f42dd605eec60f2d146ced8"
            },
            {
              "version": "7f42ec3941560f0902fe3671e36f2c20ffd3af0a",
              "status": "affected",
              "versionType": "git",
              "lessThan": "6589f0f72f8edd1fa11adce4eedbd3615f2e78ab"
            },
            {
              "version": "7f42ec3941560f0902fe3671e36f2c20ffd3af0a",
              "status": "affected",
              "versionType": "git",
              "lessThan": "2c3bdba00283a6c7a5b19481a59a730f46063803"
            },
            {
              "version": "7f42ec3941560f0902fe3671e36f2c20ffd3af0a",
              "status": "affected",
              "versionType": "git",
              "lessThan": "626daab3811b772086aef1bf8eed3ffe6f523eff"
            },
            {
              "version": "7f42ec3941560f0902fe3671e36f2c20ffd3af0a",
              "status": "affected",
              "versionType": "git",
              "lessThan": "5bc09b397cbf1221f8a8aacb1152650c9195b02b"
            },
            {
              "version": "ccebcc74c81d8399c7b204aea47c1f33b09c2b17",
              "status": "affected",
              "versionType": "git"
            },
            {
              "version": "831c87640d23ccb253a02e4901bd9a325b5e8c2d",
              "status": "affected",
              "versionType": "git"
            },
            {
              "version": "d8974c7fe717ee8fb0706e35cc92e0bcdf660ec5",
              "status": "affected",
              "versionType": "git"
            },
            {
              "version": "8f67918af09fc0ffd426a9b6f87697976d3fbc7b",
              "status": "affected",
              "versionType": "git"
            },
            {
              "version": "3.2.52",
              "status": "affected",
              "versionType": "semver",
              "lessThan": "3.3"
            },
            {
              "version": "3.4.83",
              "status": "affected",
              "versionType": "semver",
              "lessThan": "3.5"
            },
            {
              "version": "3.10.16",
              "status": "affected",
              "versionType": "semver",
              "lessThan": "3.11"
            },
            {
              "version": "3.11.5",
              "status": "affected",
              "versionType": "semver",
              "lessThan": "3.12"
            }
          ]
        },
        {
          "vendor": "Linux",
          "product": "Linux",
          "defaultStatus": "affected",
          "versions": [
            {
              "version": "3.12",
              "status": "affected"
            },
            {
              "version": "0",
              "status": "unaffected",
              "versionType": "semver",
              "lessThan": "3.12"
            },
            {
              "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": "*"
            }
          ]
        }
      ]
    }
  }
}