{
  "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-2026-72196",
    "sourceURL": "https://www.cve.org/CVERecord?id=CVE-2026-72196",
    "idYear": 2026,
    "status": "PUBLISHED",
    "publishedAt": "2026-08-15T05:53:55.509Z",
    "updatedAt": "2026-10-16T18:45:01.462Z",
    "importedAt": "2026-10-24T01:58:25.636Z",
    "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": "fs/ntfs3: bound copy_lcns dp->page_lcns[] index in analysis pass",
      "summary": "In the Linux kernel, the following vulnerability has been resolved:\n\nfs/ntfs3: bound copy_lcns dp->page_lcns[] index in analysis pass\n\nIn log_replay()'s analysis pass, after find_dp() returns a\nvalid DIR_PAGE_ENTRY for the (target_attr, target_vcn) tuple,\nthe copy_lcns block walks lrh->lcns_follow further entries:\n\n\tt16 = le16_to_cpu(lrh->lcns_follow);\n\tfor (i = 0; i < t16; i++) {\n\t    size_t j = (size_t)(le64_to_cpu(lrh->target_vcn) -\n\t                        le64_to_cpu(dp->vcn));\n\t    dp->page_lcns[j + i] = lrh->page_lcns[i];\n\t}\n\nfind_dp() only validates that target_vcn falls within\n[dp->vcn, dp->vcn + dp->lcns_follow), i.e., that the FIRST\ncluster is covered.  The walk through the further entries is\nnot bounded against dp->lcns_follow.  For a malformed LRH\nwhere target_vcn = dp->vcn + dp->lcns_follow - 1 and\nlrh->lcns_follow > 1, the i > 0 writes overflow the dp's\nallocated page_lcns[] array.\n\nAdd the missing j + lrh->lcns_follow <= dp->lcns_follow guard.\n\nReproduced under UML+KASAN on mainline 8d90b09e6741 as a\nslab-out-of-bounds write of size 8 from log_replay+0x68d4 on\nthe mount path.\n\nThis is distinct from Pavitra Jha's 2026-05-02 patch\n(\"fs/ntfs3: validate lcns_follow in log_replay conversion\",\n<20260502154252.164586-1-jhapavitra98@gmail.com>) which\naddresses the separate version-0 dirty-page-table conversion\npath's memmove(&dp->vcn, ...) call.  The two fixes are\ncomplementary; both should land.\n\n[almaz.alexandrovich@paragon-software.com: clang-formatted the changes,\nfixed conflicts]",
      "affected": [
        {
          "vendor": "Linux",
          "product": "Linux",
          "defaultStatus": "unaffected",
          "versions": [
            {
              "version": "b46acd6a6a627d876898e1c84d3f84902264b445",
              "status": "affected",
              "versionType": "git",
              "lessThan": "9b3d8cc9d54fcded4de51b2b1026ae7182512077"
            },
            {
              "version": "b46acd6a6a627d876898e1c84d3f84902264b445",
              "status": "affected",
              "versionType": "git",
              "lessThan": "9b7c28d8c61bdb041936222a09a708531a1c2921"
            },
            {
              "version": "b46acd6a6a627d876898e1c84d3f84902264b445",
              "status": "affected",
              "versionType": "git",
              "lessThan": "0f13e823bf86bd1800168ea0bb5bca8b8500a81c"
            },
            {
              "version": "b46acd6a6a627d876898e1c84d3f84902264b445",
              "status": "affected",
              "versionType": "git",
              "lessThan": "d240cd98f5f7b65c90f6b2b6abe3232ccdc405ab"
            },
            {
              "version": "b46acd6a6a627d876898e1c84d3f84902264b445",
              "status": "affected",
              "versionType": "git",
              "lessThan": "49c86dae0c0ccb8d98ddcdc46987259389c816dd"
            },
            {
              "version": "b46acd6a6a627d876898e1c84d3f84902264b445",
              "status": "affected",
              "versionType": "git",
              "lessThan": "5e7b598660cfa8e5af172cf4c65cffc126333307"
            }
          ]
        },
        {
          "vendor": "Linux",
          "product": "Linux",
          "defaultStatus": "affected",
          "versions": [
            {
              "version": "5.15",
              "status": "affected"
            },
            {
              "version": "0",
              "status": "unaffected",
              "versionType": "semver",
              "lessThan": "5.15"
            },
            {
              "version": "6.1.178",
              "status": "unaffected",
              "versionType": "semver",
              "lessThanOrEqual": "6.1.*"
            },
            {
              "version": "6.6.145",
              "status": "unaffected",
              "versionType": "semver",
              "lessThanOrEqual": "6.6.*"
            },
            {
              "version": "6.12.97",
              "status": "unaffected",
              "versionType": "semver",
              "lessThanOrEqual": "6.12.*"
            },
            {
              "version": "6.18.40",
              "status": "unaffected",
              "versionType": "semver",
              "lessThanOrEqual": "6.18.*"
            },
            {
              "version": "7.1.5",
              "status": "unaffected",
              "versionType": "semver",
              "lessThanOrEqual": "7.1.*"
            },
            {
              "version": "7.2",
              "status": "unaffected",
              "versionType": "original_commit_for_fix",
              "lessThanOrEqual": "*"
            }
          ]
        }
      ]
    }
  }
}