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

Vulnerability from cvelistv5 – Published: 2025-06-18 11:02 – Updated: 2026-05-11 19:13
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 ?
No CVSS data available.
Assigner
References
Impacted products
Vendor Product Version
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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Forecast uses a logistic model when the trend is rising, or an exponential decay model when the trend is falling. Fitted via linearized least squares.

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Nomenclature

  • Seen: The vulnerability was mentioned, discussed, or observed by the user.
  • Confirmed: The vulnerability has been validated from an analyst's perspective.
  • Published Proof of Concept: A public proof of concept is available for this vulnerability.
  • Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
  • Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
  • Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
  • Not confirmed: The user expressed doubt about the validity of the vulnerability.
  • Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.



Detection rules are retrieved from Rulezet.