CVE-2026-43380

A flaw was found in the Linux kernel's hwmon subsystem, specifically within the pmbus/q54sj108a2 driver. This vulnerability, a stack buffer overflow, occurs in the q54sj108a2_debugfs_read function due to incorrect arguments passed to the bin2hex() function. This flaw allows data to be written past the end of a buffer onto the stack, potentially leading to a denial of service or arbitrary code execution.