{
  "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-2026-98683",
    "sourceURL": "https://www.cve.org/CVERecord?id=CVE-2026-98683",
    "idYear": 2026,
    "status": "PUBLISHED",
    "publishedAt": "2026-10-18T15:45:50.014Z",
    "updatedAt": "2026-10-19T09:23:53.516Z",
    "importedAt": "2026-10-24T01:58:41.756Z",
    "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": "smb: client: flush dirty data before zeroing a range",
      "summary": "In the Linux kernel, the following vulnerability has been resolved:\n\nsmb: client: flush dirty data before zeroing a range\n\nsmb3_zero_range() emulates FALLOC_FL_ZERO_RANGE by invalidating the\npage cache over the target range with truncate_pagecache_range() and\nthen issuing FSCTL_SET_ZERO_DATA to the server.\n\nDirty data was only flushed conditionally, when the range reached or\nextended EOF.  For a purely interior zero range that does not reach\nEOF, no flush happened, so a dirty folio overlapping the range could\nbe written back to the server after the FSCTL and refill the range\nthat was just zeroed with stale data.\n\nFix this by unconditionally flushing and waiting for dirty data in the\nrange before invalidating the page cache and issuing\nFSCTL_SET_ZERO_DATA, exactly as was done for smb3_punch_hole() in\ncommit d7d2adcd022b (\"smb/client: flush dirty data before punching a\nhole\"); the two paths are structurally identical here.\n\nThis is observed as generic/363 randomly reading stale data where a\nzeroed range is expected against Windows Server.",
      "affected": [
        {
          "vendor": "Linux",
          "product": "Linux",
          "defaultStatus": "unaffected",
          "versions": [
            {
              "version": "91d1dfae464987aaf6c79ff51d8674880fb3be77",
              "status": "affected",
              "versionType": "git",
              "lessThan": "cecf4114069fc19629d284710fd783d56bbca862"
            },
            {
              "version": "91d1dfae464987aaf6c79ff51d8674880fb3be77",
              "status": "affected",
              "versionType": "git",
              "lessThan": "e8ba21c7e6ef3d4cb617858760673877b2e4a2bb"
            },
            {
              "version": "91d1dfae464987aaf6c79ff51d8674880fb3be77",
              "status": "affected",
              "versionType": "git",
              "lessThan": "8f8d32c1044f70e46e87550e039a15ff20a4b21c"
            },
            {
              "version": "13af7446428771e9e529284d390e7994df8be683",
              "status": "affected",
              "versionType": "git"
            },
            {
              "version": "0a9423f99ded38b32bd1864347332cc557e6b141",
              "status": "affected",
              "versionType": "git"
            },
            {
              "version": "7dfa4279c55f467a88e653a5d544817181b22aea",
              "status": "affected",
              "versionType": "git"
            },
            {
              "version": "6.1.110",
              "status": "affected",
              "versionType": "semver",
              "lessThan": "6.2"
            },
            {
              "version": "6.6.51",
              "status": "affected",
              "versionType": "semver",
              "lessThan": "6.7"
            },
            {
              "version": "6.10.10",
              "status": "affected",
              "versionType": "semver",
              "lessThan": "6.11"
            }
          ]
        },
        {
          "vendor": "Linux",
          "product": "Linux",
          "defaultStatus": "affected",
          "versions": [
            {
              "version": "6.11",
              "status": "affected"
            },
            {
              "version": "0",
              "status": "unaffected",
              "versionType": "semver",
              "lessThan": "6.11"
            },
            {
              "version": "6.18.56",
              "status": "unaffected",
              "versionType": "semver",
              "lessThanOrEqual": "6.18.*"
            },
            {
              "version": "7.2.10",
              "status": "unaffected",
              "versionType": "semver",
              "lessThanOrEqual": "7.2.*"
            },
            {
              "version": "7.3",
              "status": "unaffected",
              "versionType": "original_commit_for_fix",
              "lessThanOrEqual": "*"
            }
          ]
        }
      ]
    }
  }
}