thermal subsystem

The thermal subsystem in the Linux kernel manages thermal zones, which represent temperature sensors and cooling devices, and exposes them to user space via sysfs and netlink. A recent fix for CVE-2024-50028 addresses a use-after-free vulnerability caused by a race condition in the thermal subsystem, where a thermal zone object could be accessed after being freed. The patch ensures that thermal_zone_get_by_id takes and returns a proper device reference to prevent this issue. This topic is relevant for users interested in Linux kernel security, thermal management, and system stability.