fkie_cve-2024-42084
Vulnerability from fkie_nvd
Published
2024-07-29 17:15
Modified
2025-11-03 22:17
Severity ?
5.5 (Medium) - CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:N
Summary
In the Linux kernel, the following vulnerability has been resolved: ftruncate: pass a signed offset The old ftruncate() syscall, using the 32-bit off_t misses a sign extension when called in compat mode on 64-bit architectures. As a result, passing a negative length accidentally succeeds in truncating to file size between 2GiB and 4GiB. Changing the type of the compat syscall to the signed compat_off_t changes the behavior so it instead returns -EINVAL. The native entry point, the truncate() syscall and the corresponding loff_t based variants are all correct already and do not suffer from this mistake.
References
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/4b8e88e563b5f666446d002ad0dc1e6e8e7102b0Patch
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/5ae6af68410bdad6181ec82104bb9985a7a6a0faPatch
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/836359247b0403e0634bfbc83e5bb8063fad287aPatch
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/84bf6b64a1a0dfc6de7e1b1c776d58d608e7865aPatch
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/930a4c369f74da26816eaaa71b5888d29b759c27Patch
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/c329760749b5419769e57cb2be80955d2805f9c9Patch
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/dbb226d81cd02cee140139c2369791e6f61f2007Patch
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/f531d4bc6c5588d713359e42ed65e46816d841d8Patch
af854a3a-2127-422b-91ae-364da2661108https://git.kernel.org/stable/c/4b8e88e563b5f666446d002ad0dc1e6e8e7102b0Patch
af854a3a-2127-422b-91ae-364da2661108https://git.kernel.org/stable/c/5ae6af68410bdad6181ec82104bb9985a7a6a0faPatch
af854a3a-2127-422b-91ae-364da2661108https://git.kernel.org/stable/c/836359247b0403e0634bfbc83e5bb8063fad287aPatch
af854a3a-2127-422b-91ae-364da2661108https://git.kernel.org/stable/c/84bf6b64a1a0dfc6de7e1b1c776d58d608e7865aPatch
af854a3a-2127-422b-91ae-364da2661108https://git.kernel.org/stable/c/930a4c369f74da26816eaaa71b5888d29b759c27Patch
af854a3a-2127-422b-91ae-364da2661108https://git.kernel.org/stable/c/c329760749b5419769e57cb2be80955d2805f9c9Patch
af854a3a-2127-422b-91ae-364da2661108https://git.kernel.org/stable/c/dbb226d81cd02cee140139c2369791e6f61f2007Patch
af854a3a-2127-422b-91ae-364da2661108https://git.kernel.org/stable/c/f531d4bc6c5588d713359e42ed65e46816d841d8Patch
af854a3a-2127-422b-91ae-364da2661108https://lists.debian.org/debian-lts-announce/2025/01/msg00001.html
Impacted products
Vendor Product Version
linux linux_kernel *
linux linux_kernel *
linux linux_kernel *
linux linux_kernel *
linux linux_kernel *
linux linux_kernel *
linux linux_kernel *
linux linux_kernel 6.10
linux linux_kernel 6.10
linux linux_kernel 6.10
linux linux_kernel 6.10
linux linux_kernel 6.10


To clipboard 

{
  "configurations": [
    {
      "nodes": [
        {
          "cpeMatch": [
            {
              "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
              "matchCriteriaId": "1AE39A8E-9E44-4E72-939C-75F992B55FF0",
              "versionEndExcluding": "4.19.317",
              "versionStartIncluding": "3.9",
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              "vulnerable": true
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          ],
          "negate": false,
          "operator": "OR"
        }
      ]
    }
  ],
  "cveTags": [],
  "descriptions": [
    {
      "lang": "en",
      "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nftruncate: pass a signed offset\n\nThe old ftruncate() syscall, using the 32-bit off_t misses a sign\nextension when called in compat mode on 64-bit architectures.  As a\nresult, passing a negative length accidentally succeeds in truncating\nto file size between 2GiB and 4GiB.\n\nChanging the type of the compat syscall to the signed compat_off_t\nchanges the behavior so it instead returns -EINVAL.\n\nThe native entry point, the truncate() syscall and the corresponding\nloff_t based variants are all correct already and do not suffer\nfrom this mistake."
    },
    {
      "lang": "es",
      "value": " En el kernel de Linux, se ha resuelto la siguiente vulnerabilidad: ftruncate: pasa un desplazamiento firmado La antigua llamada al sistema ftruncate(), que utiliza off_t de 32 bits, pierde una extensi\u00f3n de signo cuando se llama en modo de compatibilidad en arquitecturas de 64 bits. Como resultado, pasar una longitud negativa accidentalmente logra truncar el tama\u00f1o del archivo entre 2GiB y 4GiB. Cambiar el tipo de llamada al sistema compat a compat_off_t firmado cambia el comportamiento, por lo que en su lugar devuelve -EINVAL. El punto de entrada nativo, la llamada al sistema truncate() y las variantes correspondientes basadas en loff_t ya son correctas y no sufren este error."
    }
  ],
  "id": "CVE-2024-42084",
  "lastModified": "2025-11-03T22:17:35.980",
  "metrics": {
    "cvssMetricV31": [
      {
        "cvssData": {
          "attackComplexity": "LOW",
          "attackVector": "LOCAL",
          "availabilityImpact": "NONE",
          "baseScore": 5.5,
          "baseSeverity": "MEDIUM",
          "confidentialityImpact": "NONE",
          "integrityImpact": "HIGH",
          "privilegesRequired": "LOW",
          "scope": "UNCHANGED",
          "userInteraction": "NONE",
          "vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:N",
          "version": "3.1"
        },
        "exploitabilityScore": 1.8,
        "impactScore": 3.6,
        "source": "nvd@nist.gov",
        "type": "Primary"
      }
    ]
  },
  "published": "2024-07-29T17:15:11.170",
  "references": [
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "tags": [
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    },
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    },
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      "url": "https://git.kernel.org/stable/c/84bf6b64a1a0dfc6de7e1b1c776d58d608e7865a"
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  ],
  "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
  "vulnStatus": "Modified",
  "weaknesses": [
    {
      "description": [
        {
          "lang": "en",
          "value": "NVD-CWE-noinfo"
        }
      ],
      "source": "nvd@nist.gov",
      "type": "Primary"
    }
  ]
}


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