fkie_cve-2022-50131
Vulnerability from fkie_nvd
Published
2025-06-18 11:15
Modified
2025-06-18 13:47
Severity ?
Summary
In the Linux kernel, the following vulnerability has been resolved: HID: mcp2221: prevent a buffer overflow in mcp_smbus_write() Smatch Warning: drivers/hid/hid-mcp2221.c:388 mcp_smbus_write() error: __memcpy() '&mcp->txbuf[5]' too small (59 vs 255) drivers/hid/hid-mcp2221.c:388 mcp_smbus_write() error: __memcpy() 'buf' too small (34 vs 255) The 'len' variable can take a value between 0-255 as it can come from data->block[0] and it is user data. So add an bound check to prevent a buffer overflow in memcpy().
References
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/3c0f8a59f2cc8841ee6653399a77f4f3e6e9a270
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/62ac2473553a00229e67bdf3cb023b62cf7f5a9a
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/6402116a7b5ec80fa40fd145a80c813019cd555f
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/66c8e816f2f2ca4a61b406503bd10bad1b35f72f
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/91443c669d280937968f0aa4edefa741cfe35314
Impacted products
Vendor Product Version


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{
  "cveTags": [],
  "descriptions": [
    {
      "lang": "en",
      "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nHID: mcp2221: prevent a buffer overflow in mcp_smbus_write()\n\nSmatch Warning:\ndrivers/hid/hid-mcp2221.c:388 mcp_smbus_write() error: __memcpy()\n\u0027\u0026mcp-\u003etxbuf[5]\u0027 too small (59 vs 255)\ndrivers/hid/hid-mcp2221.c:388 mcp_smbus_write() error: __memcpy() \u0027buf\u0027\ntoo small (34 vs 255)\n\nThe \u0027len\u0027 variable can take a value between 0-255 as it can come from\ndata-\u003eblock[0] and it is user data. So add an bound check to prevent a\nbuffer overflow in memcpy()."
    },
    {
      "lang": "es",
      "value": "En el kernel de Linux, se ha resuelto la siguiente vulnerabilidad: HID: mcp2221: evitar un desbordamiento de b\u00fafer en mcp_smbus_write() Advertencia de Smatch: drivers/hid/hid-mcp2221.c:388 Error de mcp_smbus_write(): __memcpy() \u0027\u0026amp;mcp-\u0026gt;txbuf[5]\u0027 demasiado peque\u00f1o (59 frente a 255) drivers/hid/hid-mcp2221.c:388 Error de mcp_smbus_write(): __memcpy() \u0027buf\u0027 demasiado peque\u00f1o (34 frente a 255) La variable \u0027len\u0027 puede tomar un valor entre 0 y 255, ya que puede provenir de data-\u0026gt;block[0] y son datos de usuario. Por lo tanto, agregue una comprobaci\u00f3n de l\u00edmite para evitar un desbordamiento de b\u00fafer en memcpy()."
    }
  ],
  "id": "CVE-2022-50131",
  "lastModified": "2025-06-18T13:47:40.833",
  "metrics": {},
  "published": "2025-06-18T11:15:42.920",
  "references": [
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "url": "https://git.kernel.org/stable/c/3c0f8a59f2cc8841ee6653399a77f4f3e6e9a270"
    },
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "url": "https://git.kernel.org/stable/c/62ac2473553a00229e67bdf3cb023b62cf7f5a9a"
    },
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "url": "https://git.kernel.org/stable/c/6402116a7b5ec80fa40fd145a80c813019cd555f"
    },
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "url": "https://git.kernel.org/stable/c/66c8e816f2f2ca4a61b406503bd10bad1b35f72f"
    },
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "url": "https://git.kernel.org/stable/c/91443c669d280937968f0aa4edefa741cfe35314"
    }
  ],
  "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
  "vulnStatus": "Awaiting Analysis"
}


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