All Linux distributions as well as OS X are vulnerable to this one. This one's huge, bigger than Heartbleed. Initial patches are to lessen the severity of the bug, but expect to see several updates over the course of the next few days. Bourne Again Shell (Bash) Remote Code Execution Vulnerability | US-CERT Fixes are being pushed for each Distro (Mint has updated 3 times already). Make sure you're getting the updates, and if not, you can update manually using "patch" here: bug-bash (thread) Of course, Apple is saying the majority of OS X users are safe. **cough cough** Which means there probably won't be an OS X patch for months. Idiots.