ptmalloc
Glibc dynamic memory allocator
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Glibc dynamic memory allocator
Last updated
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ptmalloc2 is the dynamic memory allocator used by glibc since version 2.3.x. It is a fork of the original malloc with improved multi-threading support. It is also very fast (6 times faster) compared to the original malloc. Specifically, we are interested in the implementation of malloc.c. The very first step of getting into heap exploitation is reading malloc.c and understanding its algorithms.
Download and extract the latest glibc (the current version is 2.35):
The malloc.c file can be found at /usr/src/glibc/glibc-2.35/malloc.
