Linternals: Exploring The mm Subsystem via mmap [0x02]
In this part we'll use our case study to explore how the Linux kernel maps private anonymous memory.…
Linternals: Exploring The mm Subsystem via mmap [0x01]
In this series we'll explore the Linux kernel's memory management subsystem, using a simple userspace program as our starting point.…
Exploring Linux's New Random Kmalloc Caches
Let's explore the modern kernel heap exploitation meta and how the new RANDOM_KMALLOC_CACHES tries to address it.…
Linternals: The Slab Allocator
This time we're going to build on that and introduce another memory allocator found within the Linux kernel, the slab allocator, and it's various flavours. So buckle up as we dive into the exciting world of SLABs, SLUBs and SLOBs.…
Linternals: Introducing Memory Allocators & The Page Allocator
I know you've all been waiting for it, that's right, we're going to be taking a dive into another exciting aspect of Linux internals: memory allocators!…
Linternals: The Kernel Virtual Address Space
In this part of our journey into virtual memory in Linux, we cover the mystical kernel memory map and all it entails.…
Linternals: The User Virtual Address Space
We continue our journey to understand virtual memory in Linux, as we take a closer look at the user virtual address space.…
Linternals: Introducing Virtual Memory
Alright, let's get stuck into some Linternals! As the title suggests, this post will be exploring the ins and outs of virtual memory with regards to modern Linux systems. I say Linux systems, but this topic, like many in this series, treads the line between examining the Linux kernel and…