A transfer that frees a ledger and then copies the dangling pointer into the destination, turned into tcache poisoning, a forged wallet struct and a GOT overwrite
Overflowing a bot browser cookie jar to evict an HttpOnly role cookie that JavaScript could not overwrite, then writing the privileged value in its place
Reversing a custom key exchange and stream cipher to get on the wire, then a refcounted free that leaves a live pointer, ending in House of Apple on _IO_2_1_stdout_