CVE-2025-71267 (GCVE-0-2025-71267)
Vulnerability from cvelistv5
Published
2026-03-18 10:05
Modified
2026-04-13 06:02
Severity ?
Summary
In the Linux kernel, the following vulnerability has been resolved: fs: ntfs3: fix infinite loop triggered by zero-sized ATTR_LIST We found an infinite loop bug in the ntfs3 file system that can lead to a Denial-of-Service (DoS) condition. A malformed NTFS image can cause an infinite loop when an ATTR_LIST attribute indicates a zero data size while the driver allocates memory for it. When ntfs_load_attr_list() processes a resident ATTR_LIST with data_size set to zero, it still allocates memory because of al_aligned(0). This creates an inconsistent state where ni->attr_list.size is zero, but ni->attr_list.le is non-null. This causes ni_enum_attr_ex to incorrectly assume that no attribute list exists and enumerates only the primary MFT record. When it finds ATTR_LIST, the code reloads it and restarts the enumeration, repeating indefinitely. The mount operation never completes, hanging the kernel thread. This patch adds validation to ensure that data_size is non-zero before memory allocation. When a zero-sized ATTR_LIST is detected, the function returns -EINVAL, preventing a DoS vulnerability.
References
Impacted products
Vendor Product Version
Linux Linux Version: be71b5cba2e6485e8959da7a9f9a44461a1bb074
Version: be71b5cba2e6485e8959da7a9f9a44461a1bb074
Version: be71b5cba2e6485e8959da7a9f9a44461a1bb074
Version: be71b5cba2e6485e8959da7a9f9a44461a1bb074
Version: be71b5cba2e6485e8959da7a9f9a44461a1bb074
Version: be71b5cba2e6485e8959da7a9f9a44461a1bb074
Version: be71b5cba2e6485e8959da7a9f9a44461a1bb074
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{
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          "programFiles": [
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      "descriptions": [
        {
          "lang": "en",
          "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nfs: ntfs3: fix infinite loop triggered by zero-sized ATTR_LIST\n\nWe found an infinite loop bug in the ntfs3 file system that can lead to a\nDenial-of-Service (DoS) condition.\n\nA malformed NTFS image can cause an infinite loop when an ATTR_LIST attribute\nindicates a zero data size while the driver allocates memory for it.\n\nWhen ntfs_load_attr_list() processes a resident ATTR_LIST with data_size set\nto zero, it still allocates memory because of al_aligned(0). This creates an\ninconsistent state where ni-\u003eattr_list.size is zero, but ni-\u003eattr_list.le is\nnon-null. This causes ni_enum_attr_ex to incorrectly assume that no attribute\nlist exists and enumerates only the primary MFT record. When it finds\nATTR_LIST, the code reloads it and restarts the enumeration, repeating\nindefinitely. The mount operation never completes, hanging the kernel thread.\n\nThis patch adds validation to ensure that data_size is non-zero before memory\nallocation. When a zero-sized ATTR_LIST is detected, the function returns\n-EINVAL, preventing a DoS vulnerability."
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2026-04-13T06:02:33.359Z",
        "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "shortName": "Linux"
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          "url": "https://git.kernel.org/stable/c/976e6a7c51fabf150478decbe8ef5d9a26039b7c"
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        {
          "url": "https://git.kernel.org/stable/c/8d8c70b57dbeda3eb165c0940b97e85373ca9354"
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        },
        {
          "url": "https://git.kernel.org/stable/c/06909b2549d631a47fcda249d34be26f7ca1711d"
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      "title": "fs: ntfs3: fix infinite loop triggered by zero-sized ATTR_LIST",
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  "cveMetadata": {
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    "assignerShortName": "Linux",
    "cveId": "CVE-2025-71267",
    "datePublished": "2026-03-18T10:05:04.008Z",
    "dateReserved": "2026-03-17T09:08:18.457Z",
    "dateUpdated": "2026-04-13T06:02:33.359Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.2"
}


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