Linux Heap Exploitation Intro Series: The magicians cape – 1 Byte Overflow

This blog post demonstrates how single-byte and null-byte heap overflows can be abused in ptmalloc2 to alter chunk size and metadata, enabling overlapping allocations, forgotten chunks, information leaks, and arbitrary memory writes. It walks through detailed scenarios, provides proof-of-concept code and videos, and offers an online challenge to practice exploiting the described techniques.