389DS LDAP Server Support and Consulting

Bozeman Pass engineers were heavily involved with the development of what was once known as Netscape Directory Server, aka iPlanet Directory, aka SunDS, aka Fedora DS, and officially known today as 389 Directory Server. To save some typing and confusion we’ll...

Cloudflare: The Story of a Processor Bug

One of those “war stories to tell your grandkids”. David Wragg details his investigation into seemingly random segmentation faults on the Cloudflare Blog. These amazingly enough turned out to be due to a microcode bug in a specific Intel CPU design....

utroz: Programmers Guide to Meltdown

Raphael S. Carvalho, a.k.a. utroz has written a nice article showing step by step with ‘C’ source code how an exploit for the Meltdown speculative execution vulnerability would work. has also written a Meltdown vulnerability checker works by attempting to...

Linux Heap, Contention in free()

Note: this is a very old article about an issue in the Linux/glibc heap implementation that almost certainly doesn’t exist any more. However we noticed that people out on the Internet are still trying to access this article after we moved to a new web site...