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When NULL isn't null: mapping memory at 0x0 on Linux
| | blog.lenot.re
An overview of virtual memory management on Maestro
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| | And how to retain consistency when memory allocation failures occur?
| | www.lukas-barth.net
Allocating Huge Pages on Linux
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| | If you build an application that uses large, contiguous amounts of memory, it can increase your performance if you allocate this memory in so-called huge pages. Linux offers you two ways of doing that - a legacy way and a modern way. This article describes the modern way of using huge pages, so called transparent huge pages (THP) and applies the techniques from a previous article to verify that we actually got huge pages. The article starts by giving a super-short recap on how paging works and why huge p...
| | cpu.land
The Translator in Your Computer | Putting the "You" in CPU
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| | Curious exactly what happens when you run a program on your computer? Learn how multiprocessing works, what system calls really are, how computers manage memory with hardware interrupts, and how Linux loads executables.
| | comsecuris.com
Comsecuris Security Research & Consulting Blog
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| [AI summary] This blog post discusses a detailed exploit chain targeting a mobile phone's application processor OS through a compromised modem. The author outlines the process of identifying vulnerabilities in the baseband firmware, reverse engineering the MT6795's cellular stack layers, and attempting to fuzz the MM layer for potential memory corruption issues. The post also touches on the challenges of creating a persistent rootkit via the modem and the importance of hardware isolation in securing mobile platforms.