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

Vulnerability from cvelistv5 – Published: 2026-03-18 10:05 – Updated: 2026-09-08 08:44
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
5.5 (Medium)
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
Assigner
References
Impacted products
Vendor Product Version CPE status
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 , ≤ * (original_commit_for_fix)
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Siemens SIMATIC S7-1500 CPU 1518-4 PN/DP MFP Affected: V3.1.6 , < * (custom)
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Siemens SIMATIC S7-1500 CPU 1518-4 PN/DP MFP Affected: V3.1.5 , < * (custom)
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Siemens SIMATIC S7-1500 CPU 1518F-4 PN/DP MFP Affected: V3.1.6 , < * (custom)
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Siemens SIMATIC S7-1500 CPU 1518F-4 PN/DP MFP Affected: V3.1.5 , < * (custom)
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Siemens SIPLUS S7-1500 CPU 1518-4 PN/DP MFP Affected: V3.1.6 , < * (custom)
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Siemens SIPLUS S7-1500 CPU 1518-4 PN/DP MFP Affected: V3.1.5 , < * (custom)
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                    "versionType": "custom"
                  }
                ]
              },
              {
                "defaultStatus": "unknown",
                "product": "SIMATIC S7-1500 CPU 1518F-4 PN/DP MFP",
                "vendor": "Siemens",
                "versions": [
                  {
                    "lessThan": "*",
                    "status": "affected",
                    "version": "V3.1.6",
                    "versionType": "custom"
                  }
                ]
              },
              {
                "defaultStatus": "unknown",
                "product": "SIMATIC S7-1500 CPU 1518F-4 PN/DP MFP",
                "vendor": "Siemens",
                "versions": [
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                    "version": "V3.1.5",
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              {
                "defaultStatus": "unknown",
                "product": "SIPLUS S7-1500 CPU 1518-4 PN/DP MFP",
                "vendor": "Siemens",
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              },
              {
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                "product": "SIPLUS S7-1500 CPU 1518-4 PN/DP MFP",
                "vendor": "Siemens",
                "versions": [
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                    "lessThan": "*",
                    "status": "affected",
                    "version": "V3.1.5",
                    "versionType": "custom"
                  }
                ]
              }
            ],
            "source": "0b142b55-0307-4c5a-b3c9-f314f3fb7c5e"
          }
        ],
        "configurations": [
          {
            "nodes": [
              {
                "cpeMatch": [
                  {
                    "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                    "matchCriteriaId": "B0330CE4-09CE-43EF-A9C8-CD49FFD1DC98",
                    "versionEndExcluding": "5.15.202",
                    "versionStartIncluding": "5.15",
                    "vulnerable": true
                  },
                  {
                    "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
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                    "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
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                ],
                "negate": false,
                "operator": "OR"
              }
            ]
          }
        ],
        "cveTags": [],
        "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."
          },
          {
            "lang": "es",
            "value": "En el kernel de Linux, la siguiente vulnerabilidad ha sido resuelta:\n\nfs: ntfs3: corrige bucle infinito provocado por ATTR_LIST de tama\u00f1o cero\n\nSe encontr\u00f3 un error de bucle infinito en el sistema de archivos ntfs3 que puede llevar a una condici\u00f3n de Denegaci\u00f3n de Servicio (DoS).\n\nUna imagen NTFS malformada puede causar un bucle infinito cuando un atributo ATTR_LIST indica un tama\u00f1o de datos cero mientras el controlador asigna memoria para ello.\n\nCuando ntfs_load_attr_list() procesa un ATTR_LIST residente con data_size establecido en cero, todav\u00eda asigna memoria debido a al_aligned(0). Esto crea un estado inconsistente donde ni-\u0026gt;attr_list.size es cero, pero ni-\u0026gt;attr_list.le no es nulo. Esto hace que ni_enum_attr_ex asuma incorrectamente que no existe ninguna lista de atributos y enumere solo el registro MFT primario. Cuando encuentra ATTR_LIST, el c\u00f3digo lo recarga y reinicia la enumeraci\u00f3n, repiti\u00e9ndose indefinidamente. La operaci\u00f3n de montaje nunca se completa, colgando el hilo del kernel.\n\nEste parche a\u00f1ade validaci\u00f3n para asegurar que data_size no sea cero antes de la asignaci\u00f3n de memoria. Cuando se detecta un ATTR_LIST de tama\u00f1o cero, la funci\u00f3n devuelve -EINVAL, previniendo una vulnerabilidad de DoS."
          }
        ],
        "id": "CVE-2025-71267",
        "lastModified": "2026-07-14T13:18:06.330",
        "metrics": {
          "cvssMetricV31": [
            {
              "cvssData": {
                "attackComplexity": "LOW",
                "attackVector": "LOCAL",
                "availabilityImpact": "HIGH",
                "baseScore": 5.5,
                "baseSeverity": "MEDIUM",
                "confidentialityImpact": "NONE",
                "integrityImpact": "NONE",
                "privilegesRequired": "LOW",
                "scope": "UNCHANGED",
                "userInteraction": "NONE",
                "vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H",
                "version": "3.1"
              },
              "exploitabilityScore": 1.8,
              "impactScore": 3.6,
              "source": "nvd@nist.gov",
              "type": "Primary"
            }
          ]
        },
        "published": "2026-03-18T11:16:15.720",
        "references": [
          {
            "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
            "tags": [
              "Patch"
            ],
            "url": "https://git.kernel.org/stable/c/06909b2549d631a47fcda249d34be26f7ca1711d"
          },
          {
            "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
            "tags": [
              "Patch"
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            "url": "https://git.kernel.org/stable/c/7ef219656febf5ae06ae56b1fce47ebd05f92b68"
          },
          {
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            "tags": [
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            "url": "https://git.kernel.org/stable/c/8d8c70b57dbeda3eb165c0940b97e85373ca9354"
          },
          {
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            "tags": [
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          },
          {
            "source": "0b142b55-0307-4c5a-b3c9-f314f3fb7c5e",
            "url": "https://cert-portal.siemens.com/productcert/html/ssa-019113.html"
          },
          {
            "source": "0b142b55-0307-4c5a-b3c9-f314f3fb7c5e",
            "url": "https://cert-portal.siemens.com/productcert/html/ssa-082556.html"
          }
        ],
        "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "vulnStatus": "Modified",
        "weaknesses": [
          {
            "description": [
              {
                "lang": "en",
                "value": "CWE-835"
              }
            ],
            "source": "nvd@nist.gov",
            "type": "Primary"
          }
        ]
      }
    },
    "redhat_vex": {
      "aggregate_severity": "None",
      "current_release_date": "2026-06-28T07:13:10+00:00",
      "cve": "CVE-2025-71267",
      "id": "CVE-2025-71267",
      "initial_release_date": "2025-01-01T00:00:00+00:00",
      "product_status:known_not_affected": "274",
      "source": "Red Hat CSAF VEX",
      "status": "final",
      "title": "kernel: fs: ntfs3: fix infinite loop triggered by zero-sized ATTR_LIST",
      "url": "https://security.access.redhat.com/data/csaf/v2/vex/2025/cve-2025-71267.json",
      "version": "3"
    },
    "suse_vex": {
      "aggregate_severity": "moderate",
      "current_release_date": "2026-08-28T16:47:18Z",
      "cve": "CVE-2025-71267",
      "id": "CVE-2025-71267",
      "initial_release_date": "2026-03-19T00:30:11Z",
      "product_status:known_not_affected": "437",
      "source": "SUSE CSAF VEX",
      "status": "interim",
      "title": "SUSE CVE CVE-2025-71267",
      "url": "https://ftp.suse.com/pub/projects/security/csaf-vex/cve-2025-71267.json",
      "version": "8"
    }
  }
}



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Forecast uses a logistic model when the trend is rising, or an exponential decay model when the trend is falling. Fitted via linearized least squares.

Sightings

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Nomenclature

  • 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.
  • Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
  • Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
  • 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.



Related by attack behaviour

Vulnerabilities whose description is nearest to this one in the vector space of the CIRCL/vulnerability-attack-technique-biencoder model. This is a similarity search over the bi-encoder space (plain cosine), not a classification, and it has no measured accuracy.