Quanyang Wang contributed to security and reliability improvements in Linux kernel and bootloader codebases, focusing on device drivers and embedded systems. In the analogdevicesinc/linux repository, he mitigated a buffer overflow in the Xilinx display driver by replacing strscpy with fourcc_code, ensuring robust handling of DRM_FORMAT_XXX values in C. Later, in torvalds/linux and flipperdevices/u-boot, he implemented secure CoreSight access restrictions for ARM64/ZynqMP platforms, disabling debug components by default under secure boot to reduce attack surface. His work demonstrated careful kernel development, precise device tree integration, and a disciplined approach to code review, addressing both functional and security requirements.