{
  "affected": [
    {
      "ranges": [
        {
          "events": [
            {
              "introduced": "b46acd6a6a627d876898e1c84d3f84902264b445"
            },
            {
              "fixed": "2097a2537d9d1c29c0e20ed0dbf717a0ccd8f374"
            },
            {
              "fixed": "f1422df595d69b997d23a8f11e12c528ccef7fad"
            },
            {
              "fixed": "4f129fc6f756f8541e5bff45b1804cc11b1ec712"
            },
            {
              "fixed": "c99444f6dfca893f6d310aae4a53c620f98f7b4f"
            },
            {
              "fixed": "5a35454179fe1041d9cd286f5d320ce0d448c12a"
            }
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "type": "GIT"
        }
      ]
    },
    {
      "package": {
        "ecosystem": "Linux",
        "name": "Kernel"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "5.15.0"
            },
            {
              "fixed": "6.6.145"
            }
          ],
          "type": "ECOSYSTEM"
        },
        {
          "events": [
            {
              "introduced": "6.7.0"
            },
            {
              "fixed": "6.12.97"
            }
          ],
          "type": "ECOSYSTEM"
        },
        {
          "events": [
            {
              "introduced": "6.13.0"
            },
            {
              "fixed": "6.18.40"
            }
          ],
          "type": "ECOSYSTEM"
        },
        {
          "events": [
            {
              "introduced": "6.19.0"
            },
            {
              "fixed": "7.1.5"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    }
  ],
  "database_specific": {
    "cna_assigner": "Linux",
    "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/72xxx/CVE-2026-72470.json"
  },
  "details": "In the Linux kernel, the following vulnerability has been resolved:\n\nfs/ntfs3: resize log-\u003eone_page_buf when adopting on-disk page size\n\nlog_replay() allocates log-\u003eone_page_buf using the page size that was\nchosen from the host PAGE_SIZE:\n\n\tlog-\u003eone_page_buf = kmalloc(log-\u003epage_size, GFP_NOFS);\n\nLater, when a restart area is found, the log page size recorded on disk\nis adopted:\n\n\tt32 = le32_to_cpu(log-\u003erst_info.r_page-\u003esys_page_size);\n\tif (log-\u003epage_size != t32) {\n\t\tlog-\u003el_size = log-\u003eorig_file_size;\n\t\tlog-\u003epage_size = norm_file_page(t32, \u0026log-\u003el_size,\n\t\t\t\t\t\tt32 == DefaultLogPageSize);\n\t}\n\nIf the on-disk page size is larger than the size used for the initial\nallocation, log-\u003epage_size grows but one_page_buf is left at its\noriginal, smaller size. A subsequent unaligned read_log_page() then\nreads log-\u003epage_size bytes into the undersized scratch buffer:\n\n\tpage_buf = page_off ? log-\u003eone_page_buf : *buffer;\n\terr = ntfs_read_run_nb_ra(ni-\u003emi.sbi, \u0026ni-\u003efile.run, page_vbo, page_buf,\n\t\t\t\t  log-\u003epage_size, NULL, \u0026log-\u003eread_ahead);\n\noverflowing the allocation. This is reachable when mounting a dirty\nNTFS volume whose log was formatted with a page size larger than the\nbuffer initially allocated on the mounting host (for example a 64K-log\nvolume mounted on a host that allocated a 4K scratch buffer).\n\nGrow one_page_buf when the adopted on-disk page size exceeds the size\nused for the initial allocation. On krealloc() failure the original\nbuffer is left intact and freed by the existing error path.",
  "id": "CVE-2026-72470",
  "modified": "2026-08-18T03:31:25.533288927Z",
  "published": "2026-08-15T05:57:12.472Z",
  "references": [
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/2097a2537d9d1c29c0e20ed0dbf717a0ccd8f374"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/4f129fc6f756f8541e5bff45b1804cc11b1ec712"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/5a35454179fe1041d9cd286f5d320ce0d448c12a"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/c99444f6dfca893f6d310aae4a53c620f98f7b4f"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/f1422df595d69b997d23a8f11e12c528ccef7fad"
    },
    {
      "type": "ADVISORY",
      "url": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/72xxx/CVE-2026-72470.json"
    },
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-72470"
    },
    {
      "type": "PACKAGE",
      "url": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git"
    }
  ],
  "schema_version": "1.9.0",
  "severity": [
    {
      "score": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H",
      "type": "CVSS_V3"
    }
  ],
  "summary": "fs/ntfs3: resize log-\u003eone_page_buf when adopting on-disk page size"
}