Worked on the python/cpython repository to address a core stability issue in memory error handling. Focused on improving the robustness of the _interpreters.capture_exception function by implementing a null check before freeing exception data and ensuring PyErr_NoMemory is called when memory allocation fails. This fix prevents potential crashes caused by out-of-memory conditions, enhancing the reliability of Python applications under memory pressure. Utilized C for systems programming, with particular attention to error handling and memory management best practices. Documented the changes in the release notes to maintain transparency and support downstream teams, ensuring clear traceability for future maintenance and audits.