You may not use it as your main OS but there is a chance your TV, PlayStation and quite possibly a lot of your networking gear runs on a version of FreeBSD.  While the repercussions are likely to be limited to a kernel crash which is annoying but not overly concerning researchers do suggest it is possible a talented attacker could get hold of at least some of the contents of the kernel's memory.  You probably shouldn't panic like your kernel could but following the link from The Register and patching is probably a good idea.

"Got FreeBSD? Get busy on the patch, because a problem with its TCP ordering has emerged, with both denial-of-service and data leakage as possible effects."

Here is some more Tech News from around the web:

Tech Talk