ntfs: validate index block header more strictly

{
  "id": "68eaa674ee3c863a67c762832541c759a7c489ba63af3d3b5415492e635d067a",
  "url": "https://osv.dev/vulnerability/CVE-2026-72206",
  "method": "structured",
  "payload": {
    "kind": "advisory",
    "title": "ntfs: validate index block header more strictly",
    "summary": "In the Linux kernel, the following vulnerability has been resolved: ntfs: validate index block header more strictly Modify ntfs_index_block_inconsisent() to perform stricter validation of INDEX_HEADER geometry in INDX blocks, and update ntfs_lookup_inode_by_name() to use that function to validate INDX blocks.",
    "evidence": "osv:CVE-2026-72206",
    "products": [
      {
        "name": {
          "value": "Kernel",
          "evidence": "/affected/1/package/name"
        },
        "prerequisites": [],
        "fixed_versions": [
          {
            "value": "7.1.5",
            "evidence": "/affected/1/ranges"
          }
        ],
        "affected_versions": []
      }
    ],
    "severity": "critical",
    "structured": {
      "id": "CVE-2026-72206",
      "aliases": [
        "CVE-2026-72206"
      ],
      "metrics": [
        {
          "type": "CVSS_V3",
          "score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H"
        }
      ],
      "affected": [
        {
          "ranges": [
            {
              "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
              "type": "GIT",
              "events": [
                {
                  "introduced": "1e9ea7e04472d4e5e12e58c881eaacfb3e49b669"
                },
                {
                  "fixed": "34a49b3e94a50f45b62c6e6f574f676a079ba23e"
                },
                {
                  "fixed": "14bc34fe948523dc2b0174691f9af9e74eb4f3fd"
                }
              ]
            }
          ],
          "database_specific": {
            "source": "https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-72206.json"
          }
        },
        {
          "ranges": [
            {
              "type": "ECOSYSTEM",
              "events": [
                {
                  "introduced": "7.1.0"
                },
                {
                  "fixed": "7.1.5"
                }
              ]
            }
          ],
          "package": {
            "name": "Kernel",
            "ecosystem": "Linux"
          },
          "database_specific": {
            "source": "https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-72206.json"
          }
        }
      ],
      "modified": "2026-10-28T02:30:45.658745364Z",
      "provider": "osv",
      "references": [
        "https://git.kernel.org/stable/c/14bc34fe948523dc2b0174691f9af9e74eb4f3fd",
        "https://git.kernel.org/stable/c/34a49b3e94a50f45b62c6e6f574f676a079ba23e",
        "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/72xxx/CVE-2026-72206.json",
        "https://nvd.nist.gov/vuln/detail/CVE-2026-72206",
        "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git"
      ],
      "provider_metadata": {
        "cna_assigner": "Linux",
        "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/72xxx/CVE-2026-72206.json"
      }
    },
    "related_cves": [
      {
        "value": "CVE-2026-72206",
        "evidence": "/id"
      }
    ],
    "security_relevant": true,
    "severity_evidence": "/severity/0/score"
  },
  "source_id": "core-osv",
  "document_id": 513869,
  "published_at": "2026-08-15T05:54:02.534+00:00"
}