ntfs: harden runlist realloc size calculations

{
  "id": "7d39b08851df1e89f7d480c91976b0fc80b42a20378a2102c83061a1693d0b3a",
  "url": "https://osv.dev/vulnerability/CVE-2026-74570",
  "method": "structured",
  "payload": {
    "kind": "advisory",
    "title": "ntfs: harden runlist realloc size calculations",
    "summary": "In the Linux kernel, the following vulnerability has been resolved: ntfs: harden runlist realloc size calculations Add a shared helper to safely convert runlist element counts to byte sizes using overflow checks, and use it in both ntfs_rl_realloc() and ntfs_rl_realloc_nofail().",
    "evidence": "osv:CVE-2026-74570",
    "products": [
      {
        "name": {
          "value": "Kernel",
          "evidence": "/affected/1/package/name"
        },
        "prerequisites": [],
        "fixed_versions": [
          {
            "value": "7.1.8",
            "evidence": "/affected/1/ranges"
          }
        ],
        "affected_versions": []
      }
    ],
    "severity": "critical",
    "structured": {
      "id": "CVE-2026-74570",
      "aliases": [
        "CVE-2026-74570"
      ],
      "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": [
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                  "introduced": "11ccc9107dc460de28af90fac1f42404d9802735"
                },
                {
                  "fixed": "57e7b8bf7b02a0140463fea786e5172cbdf2da2f"
                },
                {
                  "fixed": "8bed376124ab4505b70083a2b91f2c7ef6d51e24"
                }
              ]
            }
          ],
          "database_specific": {
            "source": "https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-74570.json"
          }
        },
        {
          "ranges": [
            {
              "type": "ECOSYSTEM",
              "events": [
                {
                  "introduced": "7.1.0"
                },
                {
                  "fixed": "7.1.8"
                }
              ]
            }
          ],
          "package": {
            "name": "Kernel",
            "ecosystem": "Linux"
          },
          "database_specific": {
            "source": "https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-74570.json"
          }
        }
      ],
      "modified": "2026-10-28T02:30:49.254104321Z",
      "provider": "osv",
      "references": [
        "https://git.kernel.org/stable/c/57e7b8bf7b02a0140463fea786e5172cbdf2da2f",
        "https://git.kernel.org/stable/c/8bed376124ab4505b70083a2b91f2c7ef6d51e24",
        "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/74xxx/CVE-2026-74570.json",
        "https://nvd.nist.gov/vuln/detail/CVE-2026-74570",
        "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/2026/74xxx/CVE-2026-74570.json"
      }
    },
    "related_cves": [
      {
        "value": "CVE-2026-74570",
        "evidence": "/id"
      }
    ],
    "security_relevant": true,
    "severity_evidence": "/severity/0/score"
  },
  "source_id": "core-osv",
  "document_id": 517660,
  "published_at": "2026-08-15T12:28:10.107+00:00"
}