Say process 1 has allocated some space with VirtualAlloc in a function and the function already returned at that time. Is it possible that a second process frees the space with VirtualFreeEx if it knows the right address(es)?
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Say process 1 has allocated some space with VirtualAlloc in a function and the function already returned at that time. Is it possible that a second process frees the space with VirtualFreeEx if it knows the right address(es)?
The answer to this question is yes.
Memory is owned by the process in which it resides. It is not owned by the process which allocated it.
In many ways, this is similar to calling
mallocfrom one thread and thenfreefrom another. That’s perfectly fine. And it’s perfectly fine to do the equivalent withVirtualAllocExandVirtualFreeEx.