CVE-2022-50131 (GCVE-0-2022-50131)

Vulnerability from cvelistv5 – Published: 2025-06-18 11:02 – Updated: 2026-08-05 08:57
VLAI
Title
HID: mcp2221: prevent a buffer overflow in mcp_smbus_write()
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().
Severity
7.8 (High)
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Assigner
References
Impacted products
Vendor Product Version CPE status
Linux Linux Affected: 67a95c21463d066060b0f66d65a75d45bb386ffb , < 66c8e816f2f2ca4a61b406503bd10bad1b35f72f (git)
Affected: 67a95c21463d066060b0f66d65a75d45bb386ffb , < 91443c669d280937968f0aa4edefa741cfe35314 (git)
Affected: 67a95c21463d066060b0f66d65a75d45bb386ffb , < 6402116a7b5ec80fa40fd145a80c813019cd555f (git)
Affected: 67a95c21463d066060b0f66d65a75d45bb386ffb , < 3c0f8a59f2cc8841ee6653399a77f4f3e6e9a270 (git)
Affected: 67a95c21463d066060b0f66d65a75d45bb386ffb , < 62ac2473553a00229e67bdf3cb023b62cf7f5a9a (git)
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Linux Linux Affected: 5.7
Unaffected: 0 , < 5.7 (semver)
Unaffected: 5.10.137 , ≤ 5.10.* (semver)
Unaffected: 5.15.61 , ≤ 5.15.* (semver)
Unaffected: 5.18.18 , ≤ 5.18.* (semver)
Unaffected: 5.19.2 , ≤ 5.19.* (semver)
Unaffected: 6.0 , ≤ * (original_commit_for_fix)
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          },
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            "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()."
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      "cve": "CVE-2022-50131",
      "id": "CVE-2022-50131",
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      "source": "Red Hat CSAF VEX",
      "status": "final",
      "title": "kernel: HID: mcp2221: prevent a buffer overflow in mcp_smbus_write()",
      "url": "https://security.access.redhat.com/data/csaf/v2/vex/2022/cve-2022-50131.json",
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      "cve": "CVE-2022-50131",
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      "product_status:recommended": "253",
      "source": "SUSE CSAF VEX",
      "status": "interim",
      "title": "SUSE CVE CVE-2022-50131",
      "url": "https://ftp.suse.com/pub/projects/security/csaf-vex/cve-2022-50131.json",
      "version": "43"
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}



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  • Seen: The vulnerability was mentioned, discussed, or observed by the user.
  • Confirmed: The vulnerability has been validated from an analyst's perspective.
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  • Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.



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