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Is it possible to execute code in heap space?
If the heap is executable, you can branch to that code. But some unix variants make the heap space non-executable, so as to make exploits of some security vulnerabilities such as buffer overflows more difficult (then even if you can inject code into a program, you might not be able to branch to it).
What are the anonymous regions in Linux used for?
Anonymous regions are created by mmap, but are not attached to any file, they are used for miscellaneous things like shared memory, buffers not on the heap, and the pthread library uses anonymous mapped regions as stacks for new threads. There’s no 100% guarantee that contiguous virtual memory means contiguous physical memory.
How is the process address space described in Linux?
The process address space is described by the mm_structstruct meaning that only one exists for each process and is shared between userspace threads. In fact, threads are identified in the task list by finding all task_structs which have pointers to the same mm_struct.
How is shared memory segment attached to process address space?
If the region been unmapped is in the middle of an existing region, the existing region is split into two separate regions shmat() This attaches a shared memory segment to a process address space shmdt() Removes a shared memory segment from an address space execve()
What does segment heap mean in Windows 10?
Introduced in Windows 10, Segment Heap is the native heap implementation used in Windows apps (formerly called Modern/Metro apps) and certain system processes. This new heap implementation is an addition to the well-researched and widely documented NT Heap that is still used in traditional applications and in certain types of
Which is the native heap in Windows 10?
It is currently the native heap implementation used in Windows apps (formerly called Modern/Metro apps) and in certain system processes, while the older native heap implementation (NT Heap) is still the default for traditional applications.