Worked on the geerlingguy/linux repository to enhance the reliability and compatibility of the Linux USB driver stack, focusing exclusively on bug fixes rather than new features. Addressed issues in device drivers by validating endpoint presence in the Sierra_net driver, ensuring correct packet handling in cdc-ncm based on device filtering capabilities, and resolving a race condition during initialization in cdc-acm. All changes were implemented in C, leveraging expertise in kernel development, embedded systems, and USB networking. The work improved device startup reliability and maintainability, reducing errors across diverse USB hardware and ensuring robust operation within the Linux kernel environment.