simon

3 Articles

Self-taught Security Researcher from Germany. Previously did work on Static Code Analysis on web applications like WordPress and Magento2. Now into fuzzing

Modifying Syzkaller to fuzz FUSE

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simon November 3, 2020

22 Min Read

This blog post will describe the steps I took to modify Google’s Syzkaller in a way that allowed me to fuzz the entirety of FUSE, including its file system operations which was previously not easily possible with Syzkaller.* Before diving into any code changes, I…

Fuzzing, Linux

Depth vs width in syscall fuzzing: Syzkall grouping suggestion

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simon November 3, 2020

10 Min Read

The motivation for this blog post is to make a suggestion about how corpus management could possibly be improved in Syzkaller and to introduce an optional new feature, which would be called something like Syzkall grouping. Before I describe this feature for which I built…

Fuzzing

Fuzzing for eBPF JIT bugs in the Linux kernel

0 9521

simon November 1, 2020

19 Min Read

Inspired by Manfred Paul‘s amazing write-up of an eBPF JIT verifier bug, I wanted to find out if there have been any significant changes to the Linux eBPF verifier since the publication of Manfred’s bug and if there was an easy way to fuzz the…

BPF, Exploit, Fuzzing, Linux

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simon

Security Enthusiast

Self-taught Security Researcher from Germany. Previously did work on Static Code Analysis on web applications like WordPress and Magento2. Now into fuzzing

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