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Linux Kernel

The Linux kernel is a free and open-source (FOSS), modular, and most importantly - Unix-like operating system kernel. Linux is developed for many types of devices, such as embedded devices, smartphones, desktops and servers.
Ksmbd Featured

Tickling ksmbd: fuzzing SMB in the Linux kernel

Following the adventure of manually discovering network-based vulnerabilities in the Linux kernel, I'm adding ksmbd-fuzzing functionality to the already extensive kernel-fuzzing tool that is Syzkaller.
Sep 16, 2023 7 min read
Real World Featured

Unleashing ksmbd: remote exploitation of the Linux kernel (ZDI-23-979, ZDI-23-980)

December 22nd 2022: it's Christmas Thursday, one of the last workdays before the Christmas vacation starts. Whilst everyone was looking forward to opening presents from friends and family, the Zero Day Initiative decided to give the IT community a present as well: immense stress in the form of ZDI-22-1690, an
Aug 4, 2023 10 min read
Binary Exploitation Featured

Knote (HackTheBox)

Heya infosec folks, in this write-up we will cover the Knote (kernel-note) kernel-pwn challenge on HackTheBox. We can trigger a local privilege escalation attack by exploiting a use-after-free bug. The description of the challenge is as follows: Secure your secrets in the kernel space! Summary * What are kernel modules? * How
Jan 16, 2023 16 min read
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