GHSA-GWCC-2364-W9P4

Vulnerability from github – Published: 2025-06-18 12:30 – Updated: 2025-11-25 15:31
VLAI?
Details

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().

Severity ?
7.8 (High)
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
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{
  "affected": [],
  "aliases": [
    "CVE-2022-50156"
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-787"
    ],
    "github_reviewed": false,
    "github_reviewed_at": null,
    "nvd_published_at": "2025-06-18T11:15:45Z",
    "severity": "HIGH"
  },
  "details": "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().",
  "id": "GHSA-gwcc-2364-w9p4",
  "modified": "2025-11-25T15:31:32Z",
  "published": "2025-06-18T12:30:51Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2022-50156"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/26e427ac85c2b8d0d108cc80b6de34d33e2780c4"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/381583845d19cb4bd21c8193449385f3fefa9caf"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/3af7d60e9a6c17d6d41c4341f8020511887d372d"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/519ff31a6ddd87aa4905bd9bf3b92e8b88801614"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/8489a20ac481b08c0391608d81ed3796d373cfdf"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/e7028944e61014ae915e7fb74963d3835f2f761a"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/ebda3d6b004bb6127a66a616524a2de152302ca7"
    }
  ],
  "schema_version": "1.4.0",
  "severity": [
    {
      "score": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H",
      "type": "CVSS_V3"
    }
  ]
}


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