CVE-2022-50131
HID: mcp2221: prevent a buffer overflow in mcp_smbus_write()
CVSS Score
0.0
EPSS Score
0.0%
EPSS Percentile
0th
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().
| Vendor | linux |
| Product | linux |
| Ecosystems | |
| Industries | Technology |
| Published | Jun 18, 2025 |
| Last Updated | May 11, 2026 |
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Affected Versions
Linux / Linux
67a95c21463d066060b0f66d65a75d45bb386ffb < 66c8e816f2f2ca4a61b406503bd10bad1b35f72f 67a95c21463d066060b0f66d65a75d45bb386ffb < 91443c669d280937968f0aa4edefa741cfe35314 67a95c21463d066060b0f66d65a75d45bb386ffb < 6402116a7b5ec80fa40fd145a80c813019cd555f 67a95c21463d066060b0f66d65a75d45bb386ffb < 3c0f8a59f2cc8841ee6653399a77f4f3e6e9a270 67a95c21463d066060b0f66d65a75d45bb386ffb < 62ac2473553a00229e67bdf3cb023b62cf7f5a9a
Linux / Linux
5.7
References
git.kernel.org: https://git.kernel.org/stable/c/66c8e816f2f2ca4a61b406503bd10bad1b35f72f git.kernel.org: https://git.kernel.org/stable/c/91443c669d280937968f0aa4edefa741cfe35314 git.kernel.org: https://git.kernel.org/stable/c/6402116a7b5ec80fa40fd145a80c813019cd555f git.kernel.org: https://git.kernel.org/stable/c/3c0f8a59f2cc8841ee6653399a77f4f3e6e9a270 git.kernel.org: https://git.kernel.org/stable/c/62ac2473553a00229e67bdf3cb023b62cf7f5a9a