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pwning kernels & blogging on os internals ๐ŸŒฑ
Bloghttps://sam4k.com
Twitterhttps://twitter.com/sam4k1

with offensivecon around the corner, i figured id write another post on linux kernel exploitation techniques - this time i cover the world of page table exploitation! enjoy ๐Ÿค“

https://sam4k.com/page-table-kernel-exploitation/

Kernel Exploitation Techniques: Turning The (Page) Tables

This post explores attacking page tables as a Linux kernel exploitation technique for gaining powerful read/write primitives.

sam4k

it's been a while, but here's a new post in my linternals series where i attempt to introduce the linux kernel's memory management subsystem ๐Ÿง

https://sam4k.com/linternals-exploring-the-mm-subsystem-part-1/

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.

sam4k

ZDI-24-821: A Remote UAF in The Kernel's net/tipc

An article by @sam4k describing a slab use-after-free in the TIPC networking stack that can be triggered by both local and remote attackers.

https://sam4k.com/zdi-24-821-a-remote-use-after-free-in-the-kernels-net-tipc/

ZDI-24-821: A Remote UAF in The Kernel's net/tipc

In this post I discuss a vulnerability which allows a local, or remote attacker, to trigger a use-after-free in the TIPC networking stack on affected installations of the Linux kernel.

sam4k

here's the write-up for the net/tipc vuln i found while working on my talk ๐Ÿ™Œ

https://sam4k.com/zdi-24-821-a-remote-use-after-free-in-the-kernels-net-tipc/

ZDI-24-821: A Remote UAF in The Kernel's net/tipc

In this post I discuss a vulnerability which allows a local, or remote attacker, to trigger a use-after-free in the TIPC networking stack on affected installations of the Linux kernel.

sam4k

i keep forgetting to post here, but here are my slides from a recent talk i did on how to find bugs in the linux kernel ๐Ÿค“

https://github.com/sam4k/talk-slides/blob/main/so_you_wanna_find_bugs_in_the_linux_kernel.pdf

talk-slides/so_you_wanna_find_bugs_in_the_linux_kernel.pdf at main ยท sam4k/talk-slides

Contribute to sam4k/talk-slides development by creating an account on GitHub.

GitHub
Apparently, there's a new Linux privilege escalation exploit, StackRot, triggered by a use-after-free-by-RCU maple tree bug.
https://seclists.org/oss-sec/2023/q3/4 #linux #infosec
Guillaume Teissier and Quentin Minster | OffensiveCon

Super excited to have the opportunity to speak at #TyphoonCon23 this year, thanks for having me! ๐Ÿง
Now have a dedicated place to find all my blog posts past and present: http://chompie.rip! If you come across a dead link for a blog post of mine, you can find it there
chompie at the bits

chompie at the bits

chompie at the bits

here's a post exploring security fixes in the linux kernel with the help of a small tool i wrote ๐Ÿง

https://sam4k.com/analysing-linux-kernel-commits/

Analysing Linux Kernel Commits

Tag along as I talk about a half finished project, looking at analysing Linux kernel commits for interesting security fixes.

sam4k