CVE-2022-50131high

CVE-2022-50131: high-severity vulnerability in Linux

HID: mcp2221: prevent a buffer overflow in mcp_smbus_write()

Published · Updated

21Vexday Risk Score

No sign of exploitation. No public exploitation artifact known so far.

ssvc Trackcvss 7.8epss 0.2%
exploitation probability
0.2%top 88% of all CVEs
observed exploitation
nono source reports it
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().
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Affected products
Linux · Linux
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References
https://git.kernel.org/stable/c/3c0f8a59f2cc8841ee6653399a77f4f3e6e9a270https://git.kernel.org/stable/c/62ac2473553a00229e67bdf3cb023b62cf7f5a9ahttps://git.kernel.org/stable/c/6402116a7b5ec80fa40fd145a80c813019cd555fhttps://git.kernel.org/stable/c/66c8e816f2f2ca4a61b406503bd10bad1b35f72fhttps://git.kernel.org/stable/c/91443c669d280937968f0aa4edefa741cfe35314