{
  "affected": [
    {
      "ranges": [
        {
          "events": [
            {
              "introduced": "4342306f0f0d5ff4315a204d315c1b51b914fca5"
            },
            {
              "fixed": "ed6da1abeec50db9060d714f03743fe0b63e4fe4"
            },
            {
              "fixed": "6a8149a20e46086c756c2a9202e377c0b649a0c3"
            },
            {
              "fixed": "aa1bdbb39f49c5bc9779316891c40005517842a5"
            }
          ],
          "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": "6.12.111"
            }
          ],
          "type": "ECOSYSTEM"
        },
        {
          "events": [
            {
              "introduced": "6.13.0"
            },
            {
              "fixed": "6.18.53"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    }
  ],
  "database_specific": {
    "cna_assigner": "Linux",
    "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/97xxx/CVE-2026-97437.json"
  },
  "details": "In the Linux kernel, the following vulnerability has been resolved:\n\nntfs3: fix out-of-bounds read in ntfs_dir_emit() and hdr_find_e()\n\nThe bounds check in ntfs_dir_emit() compares fname-\u003ename_len (a\ncharacter count) against e-\u003esize (a byte count) without accounting\nfor the 2-byte-per-character UTF-16LE encoding or the ATTR_FILE_NAME\nheader size:\n\n  if (fname-\u003ename_len + sizeof(struct NTFS_DE) \u003e le16_to_cpu(e-\u003esize))\n\nThis computes: name_len + 16 \u003e e_size\n\nThe correct check must account for the ATTR_FILE_NAME header (66 bytes\nbefore the name) and the UTF-16LE character size (2 bytes each):\n\n  sizeof(NTFS_DE) + offsetof(ATTR_FILE_NAME, name) +\n  name_len * sizeof(short) \u003e e_size\n\nWhich computes: 16 + 66 + name_len * 2 \u003e e_size\n\nThe correct calculation already exists as fname_full_size() in ntfs.h\nand is used in cmp_fnames(), namei.c, and fslog.c, but was not used\nin the readdir path.\n\nA crafted NTFS image with an index entry containing a small e-\u003esize\nbut large fname-\u003ename_len bypasses the current check, causing\nntfs_utf16_to_nls() to read past the entry boundary.\n\nAdditionally, add a key_size validation in hdr_find_e() to ensure the\ndeclared key_size does not exceed the available entry data, preventing\ncomparison functions from reading past entry boundaries on the lookup\npath.",
  "id": "CVE-2026-97437",
  "modified": "2026-09-27T03:30:42.797837696Z",
  "published": "2026-09-24T16:03:50.105Z",
  "references": [
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/6a8149a20e46086c756c2a9202e377c0b649a0c3"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/aa1bdbb39f49c5bc9779316891c40005517842a5"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/ed6da1abeec50db9060d714f03743fe0b63e4fe4"
    },
    {
      "type": "ADVISORY",
      "url": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/97xxx/CVE-2026-97437.json"
    },
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-97437"
    },
    {
      "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:N/UI:R/S:U/C:H/I:N/A:H",
      "type": "CVSS_V3"
    }
  ],
  "summary": "ntfs3: fix out-of-bounds read in ntfs_dir_emit() and hdr_find_e()"
}