Jan Sondhauss

**Name of the Vulnerable Software and Affected Versions** Linux kernel (affected versions not specified) **Description** A issue in the Linux kernel has been identified, where the `cpsw ethtool begin` function may return inconsistent values, leading to incorrect calls to `pm runtime put`. This inconsistency can cause the `cpsw` device to be left in a suspended state, resulting in access violations later on. The problem arises from the `pm runtime get sync` function returning 1 when the device is already active, which is the common case for `cpsw ethtool begin`. **Recommendations** To resolve this issue, consider using the `pm runtime resume and get` function, which is designed to handle this situation more effectively. This function should be used in place of `pm runtime get sync` to ensure consistent runtime management and prevent the `cpsw` device from being suspended incorrectly.