Worked on the zephyrproject-rtos/poky repository to enhance toolchain security by backporting a critical fix for a buffer overflow vulnerability in the binutils objdump tekhex parser (CVE-2024-53589). Addressed the issue by guarding modifications to the _bfd_std_section[] array, preventing out-of-bounds reads and reducing vulnerability exposure for downstream users. Applied C programming skills and expertise in security patching and vulnerability management to deliver a clean, low-risk patch that improved the stability of the Zephyr toolchain. Focused on maintaining build system integrity while ensuring the patch integrated smoothly with the December release schedule and existing codebase.