CVE-2022-50131

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

Description

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().

N/A

CVSS

Severity:

EPSS 0.02%

Affected: Linux Linux

References

Link	Tags
https://git.kernel.org/stable/c/66c8e816f2f2ca4a61b406503bd10bad1b35f72f
https://git.kernel.org/stable/c/91443c669d280937968f0aa4edefa741cfe35314
https://git.kernel.org/stable/c/6402116a7b5ec80fa40fd145a80c813019cd555f
https://git.kernel.org/stable/c/3c0f8a59f2cc8841ee6653399a77f4f3e6e9a270
https://git.kernel.org/stable/c/62ac2473553a00229e67bdf3cb023b62cf7f5a9a

Frequently Asked Questions

What is the severity of CVE-2022-50131?: CVE-2022-50131 has not yet been assigned a CVSS score.
How to fix CVE-2022-50131?: To fix CVE-2022-50131, make sure you are using an up-to-date version of the affected component(s) by checking the vendor release notes. As for now, there are no other specific guidelines available.
Is CVE-2022-50131 being actively exploited in the wild?: As for now, there are no information to confirm that CVE-2022-50131 is being actively exploited. According to its EPSS score, there is a ~0% probability that this vulnerability will be exploited by malicious actors in the next 30 days.
What software or system is affected by CVE-2022-50131?: CVE-2022-50131 affects Linux Linux, Linux Linux.

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