Content Analysis: Serenity is open source on GitHub:

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OS hacking: Let's exploit an arbitrary kernel read in SerenityOS
OS haxx0ring: Let's exploit a profiling bug to read arbitrary kernel memory!
OS haxx0ring: Let's exploit a kernel paging bug to get root!
OS hacking: Let's exploit ELF symbolication to read kernel memory!
OS hacking: Let's fix some SMP bugs to improve multicore stability
OffensiveCon20 - Alexander Popov - Exploiting a Linux Kernel Vulnerability in the V4L2 Subsystem
OS hacking: A magical key combo for dumping kernel state
OS hacking: Removing the eternal heap
OS hacking: Let's start improving the SerenityOS kernel heap allocator
SerenityOS exploit analysis: HXP CTF 2020 #1 (and let's fix it too!)
OS hacking: Let's debug a GCC crash on SerenityOS
OS hacking: Profiling (and optimizing) the SerenityOS kernel with "qprofiler"