CVE-2025-71267 (GCVE-0-2025-71267)

Vulnerability from cvelistv5 – Published: 2026-03-18 10:05 – Updated: 2026-03-18 16:21
VLAI?
Title
fs: ntfs3: fix infinite loop triggered by zero-sized ATTR_LIST
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.
Severity ?
No CVSS data available.
Assigner
References
Impacted products
Vendor Product Version
Linux Linux Affected: be71b5cba2e6485e8959da7a9f9a44461a1bb074 , < 9267d99fade76d44d4a133599524031fe684156e (git)
Affected: be71b5cba2e6485e8959da7a9f9a44461a1bb074 , < 976e6a7c51fabf150478decbe8ef5d9a26039b7c (git)
Affected: be71b5cba2e6485e8959da7a9f9a44461a1bb074 , < 8d8c70b57dbeda3eb165c0940b97e85373ca9354 (git)
Affected: be71b5cba2e6485e8959da7a9f9a44461a1bb074 , < 7ef219656febf5ae06ae56b1fce47ebd05f92b68 (git)
Affected: be71b5cba2e6485e8959da7a9f9a44461a1bb074 , < 9779a6eaaabdf47aa57910d352b398ad742e6a5f (git)
Affected: be71b5cba2e6485e8959da7a9f9a44461a1bb074 , < fd508939dbca5eceefb2d0c2564beb15469572f2 (git)
Affected: be71b5cba2e6485e8959da7a9f9a44461a1bb074 , < 06909b2549d631a47fcda249d34be26f7ca1711d (git)
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    Linux Linux Affected: 5.15
Unaffected: 0 , < 5.15 (semver)
Unaffected: 5.15.202 , ≤ 5.15.* (semver)
Unaffected: 6.1.165 , ≤ 6.1.* (semver)
Unaffected: 6.6.128 , ≤ 6.6.* (semver)
Unaffected: 6.12.75 , ≤ 6.12.* (semver)
Unaffected: 6.18.16 , ≤ 6.18.* (semver)
Unaffected: 6.19.6 , ≤ 6.19.* (semver)
Unaffected: 7.0-rc1 , ≤ * (original_commit_for_fix)
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{
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          "programFiles": [
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          "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."
        }
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      "providerMetadata": {
        "dateUpdated": "2026-03-18T16:21:46.805Z",
        "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
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  }
}


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  • Seen: The vulnerability was mentioned, discussed, or observed by the user.
  • Confirmed: The vulnerability has been validated from an analyst's perspective.
  • Published Proof of Concept: A public proof of concept is available for this vulnerability.
  • Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
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  • Not confirmed: The user expressed doubt about the validity of the vulnerability.
  • Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.



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