Fix Underflows in hwmon Kernelmodule

CVE-2024-46759

What is CVE-2024-46759?

A vulnerability exists within the Linux kernel's hwmon subsystem, specifically impacting the adc128d818 driver. This flaw arises from improper handling of user input when writing limit attributes, where a significantly large negative number can lead to integer underflows. The issue has been addressed through a reordering of the clamp_val and DIV_ROUND_CLOSEST operations, effectively mitigating the risk of underflows and enhancing the stability of the driver.

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