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Flipping Pages: An analysis of a new Linux vulnerability in nf_tables and hardened exploitation techniques

A tale about exploiting KernelCTF Mitigation, Debian, and Ubuntu instances with a double-free in nf_tables in the Linux kernel, using novel techniques like Dirty Pagedirectory. All without even having to recompile the exploit for different kernel targets once.

Mar 26, 2024 77 min read

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

Unleashing ksmbd: crafting remote exploits of the Linux kernel

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

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