Author: Gustavo A. R. Silva

Gustavo A. R. Silva works full-time as an Upstream Linux Kernel Engineer focused on hardening and proactive security. He has spent the past several years fixing all sorts of bugs and hardening the Linux kernel. His work is supported by The Linux Foundation and the Alpha-Omega project. He’s a member of the Linux Kernel Self-Protection Project, and a regular speaker at Kernel Recipes and Open Source Summit. He has also presented at Linux Security Summit, Lund LinuxCon, Linux Plumbers Conference, Everything Open, The University of Adelaide, and Symposium sur la Sécurité des Technologies de l’Information et des Communications (SSTIC) as an invited speaker.

Kernel Self-Protection Project/Linux Kernel Hardening/Mentoring/Open Source/Presentations

Speaking at Open Source Summit Korea 2026

Posted on August 10, 2026 by Gustavo A. R. Silva / 0 Comment

I presented at the Open Source Summit Korea in Seoul this morning. 🇰🇷🐧🛡⚔️ Upstream Kernel Hardening: Recent Progre...

Linux Kernel/Open Source Education/Open Source Life

10 years since I completed the LFD420 course by The Linux Foundation

Posted on May 9, 2026 by Gustavo A. R. Silva / 0 Comment

10 years ago today, I completed the LFD420 training by The Linux Foundation. About a year later, I became a professional Linux kernel developer. 🐧Ǵ...

Linux Kernel/Open Source Life

16 years since my first patch to the Linux kernel

Posted on April 19, 2026 by Gustavo A. R. Silva / 0 Comment

16 years ago today, after watching a presentation on YouTube titled “Write and Submit your first Linux Kernel Patch” by Greg Kroah-Hartman, I submit...

-Wflex-array-member-not-at-end/Kernel Self-Protection Project/Linux Kernel Bugs/Linux Kernel Hardening

-Wflex-array-member-not-at-end and a misalignment bug in the Linux kernel

Posted on April 18, 2026 by Gustavo A. R. Silva / 0 Comment

The warning During one of my presentations at Open Source Summit Japan 🇯🇵 the past year, I talked about a bug I found while addressing -Wflex-ar...

-Wflex-array-member-not-at-end/Kernel Self-Protection Project/Linux Kernel Bugs/Linux Kernel Hardening

100 -Wflex-array-member-not-at-end issues in linux-next

Posted on April 14, 2026 by Gustavo A. R. Silva / 0 Comment

Today I woke up to the great news that we now have “only” 100 -Wflex-array-member-not-at-end issues left to be addressed in linux-next. I started fi...

-Wflex-array-member-not-at-end/Kernel Self-Protection Project/Linux Kernel Bugs/Linux Kernel Hardening

Here to fix what I break: Fixing a 2-year-old bug in the Linux kernel

Posted on March 17, 2026 by Gustavo A. R. Silva / 0 Comment

While reviewing one of the patches sent to the linux-hardening list this afternoon, I spotted a bug I introduced in the same code two years ago (on March 5 2024...