fkie_cve-2022-50156
Vulnerability from fkie_nvd
Published
2025-06-18 11:15
Modified
2025-11-25 15:21
Severity ?
7.8 (High) - CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Summary
In the Linux kernel, the following vulnerability has been resolved: HID: cp2112: prevent a buffer overflow in cp2112_xfer() Smatch warnings: drivers/hid/hid-cp2112.c:793 cp2112_xfer() error: __memcpy() 'data->block[1]' too small (33 vs 255) drivers/hid/hid-cp2112.c:793 cp2112_xfer() error: __memcpy() 'buf' too small (64 vs 255) The 'read_length' variable is provided by 'data->block[0]' which comes from user and it(read_length) can take a value between 0-255. Add an upper bound to 'read_length' variable to prevent a buffer overflow in memcpy().
References
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/26e427ac85c2b8d0d108cc80b6de34d33e2780c4Patch
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/381583845d19cb4bd21c8193449385f3fefa9cafPatch
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/3af7d60e9a6c17d6d41c4341f8020511887d372dPatch
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/519ff31a6ddd87aa4905bd9bf3b92e8b88801614Patch
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/8489a20ac481b08c0391608d81ed3796d373cfdfPatch
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/e7028944e61014ae915e7fb74963d3835f2f761aPatch
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/ebda3d6b004bb6127a66a616524a2de152302ca7Patch
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 4.15
linux linux_kernel 4.15
linux linux_kernel 4.15
linux linux_kernel 4.15
linux linux_kernel 4.15


To clipboard 

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  "cveTags": [],
  "descriptions": [
    {
      "lang": "en",
      "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nHID: cp2112: prevent a buffer overflow in cp2112_xfer()\n\nSmatch warnings:\ndrivers/hid/hid-cp2112.c:793 cp2112_xfer() error: __memcpy()\n\u0027data-\u003eblock[1]\u0027 too small (33 vs 255)\ndrivers/hid/hid-cp2112.c:793 cp2112_xfer() error: __memcpy() \u0027buf\u0027 too\nsmall (64 vs 255)\n\nThe \u0027read_length\u0027 variable is provided by \u0027data-\u003eblock[0]\u0027 which comes\nfrom user and it(read_length) can take a value between 0-255. Add an\nupper bound to \u0027read_length\u0027 variable to prevent a buffer overflow in\nmemcpy()."
    },
    {
      "lang": "es",
      "value": "En el kernel de Linux, se ha resuelto la siguiente vulnerabilidad: HID: cp2112: evitar un desbordamiento de b\u00fafer en cp2112_xfer() Advertencias de Smatch: drivers/hid/hid-cp2112.c:793 Error de cp2112_xfer(): __memcpy() \u0027data-\u0026gt;block[1]\u0027 demasiado peque\u00f1o (33 frente a 255) drivers/hid/hid-cp2112.c:793 Error de cp2112_xfer(): __memcpy() \u0027buf\u0027 demasiado peque\u00f1o (64 frente a 255) La variable \u0027read_length\u0027 la proporciona \u0027data-\u0026gt;block[0]\u0027, que proviene del usuario, y puede tomar un valor entre 0 y 255. A\u00f1ada un l\u00edmite superior a la variable \u0027read_length\u0027 para evitar un desbordamiento de b\u00fafer en memcpy()."
    }
  ],
  "id": "CVE-2022-50156",
  "lastModified": "2025-11-25T15:21:57.797",
  "metrics": {
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        "cvssData": {
          "attackComplexity": "LOW",
          "attackVector": "LOCAL",
          "availabilityImpact": "HIGH",
          "baseScore": 7.8,
          "baseSeverity": "HIGH",
          "confidentialityImpact": "HIGH",
          "integrityImpact": "HIGH",
          "privilegesRequired": "LOW",
          "scope": "UNCHANGED",
          "userInteraction": "NONE",
          "vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H",
          "version": "3.1"
        },
        "exploitabilityScore": 1.8,
        "impactScore": 5.9,
        "source": "nvd@nist.gov",
        "type": "Primary"
      }
    ]
  },
  "published": "2025-06-18T11:15:45.747",
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  "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
  "vulnStatus": "Analyzed",
  "weaknesses": [
    {
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          "lang": "en",
          "value": "CWE-787"
        }
      ],
      "source": "nvd@nist.gov",
      "type": "Primary"
    }
  ]
}


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