CVE-2025-38010 addresses a Linux kernel vulnerability in the Tegra xUSB PHY driver related to UTMI pad power state tracking. The original implementation used a single reference count for managing the shared bias pad across all UTMI PHYs, which could become unbalanced during system suspend with connected USB devices, causing kernel warnings and potential instability. The fix replaces the reference count with a bitmask to track each UTMI pad's power state individually, ensuring correct power management and preventing race conditions.