Use-after-free: a CPython case study
Summary
A technical security write-up analyzing a use-after-free vulnerability in CPython, illustrated with C and Python examples, and referencing CVE-2022-48560. It discusses how borrowed object references and callbacks can lead to memory safety issues, and it covers mitigations such as AddressSanitizer and CFI considerations. The piece highlights implications for Python extensions, memory-managed environments, and defensive coding practices.