[PDF] Linux Heap Internalskey - GitHub PDF Linux%20Heap%20Internals.pdf

INTRODUCTION PREV_SIZE SIZE FD BK USER DATA PREV_SIZE SIZE Chunk Next Chunk Mem GLIBC Heap Structure Logical description In memory

The heap is a global data structure that provides dynamically allocated memory storage that provides an 'exists until free' scope It provides a compliment to the stack in that it allows an application to allocate space for variables at run time that can exist outside the scope of the currently executing function

[PDF] Heap Overflows Illustrated 10

“M” flags, overflowing the heap chunk into the next allocated chunk This attack uses hundreds of fake heap structures to force unlink to copy the contents of bk

[PDF] Heap Exploitation - Lao-Yuans Blog

This structure represents a particular chunk of memory The various fields have different meaning for allocated and unallocated chunks struct malloc_chunk {

[PDF] Comprehensively and Efficiently Protecting the Heap ∗

Heap chunk structure used in GNU C [11] 1 Actually, since heap chunks are 8- byte aligned, the last three bits in the size numeric field are used to store the PIU

[PDF] Understanding the Low Fragmentation Heap - Illmaticscom

A chunk is a contiguous piece of memory that can be measured in either, blocks or bytes HeapBase is a pseudonym for a pointer to a _HEAP structure as defined