Whoops π Β Β Broke my own streak making fun of myself π€ͺ
Lightweight Linux daemon to mirror NVMe activity to chassis LED
Rust 3
Forked from radiantwinds/rededup-mv3
A web extension to hide duplicate posts on pre-redesign Reddit.
JavaScript
If you're testing the copy.fail/exp Python exploit (or similar modern Linux page cache poisoning exploits) and find that `echo 3 > /proc/sys/vm/drop_caches` does not remove the backdoor, here is the technical breakdown of what actually happened to your system and how to fix it.
TL;DR: The exploit bypasses the dirty flag, but the page can be flushed to disk if a kernel `sync` or background process touches that memory segment.Β Β If you wait too long to drop the caches like I did, the Linux kernel's background threads will permanently write the backdoor to your physical disk.Β Β I had to force-reinstall the package and clear my bash hash cache to fully cleanup this exploit.
Here is a deep dive into my findings (with Gemini's help):