Hardware Monitor Vulnerability Fix

CVE-2024-46757

What is CVE-2024-46757?

A vulnerability exists in the Linux kernel specifically within the nct6775-core driver, where an underflow can occur when an excessively large negative number, such as -9223372036854775808, is supplied by the user when writing limit attributes. This situation arises due to the sequence of operations that involve DIV_ROUND_CLOSEST() and kstrtol(). The vulnerability has been identified and resolved by modifying the order of the clamp_val() function and DIV_ROUND_CLOSEST() operations to prevent this underflow condition from occurring, thus enhancing the reliability and security of the kernel.

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References