Bizarre security vulnerability found in every x86-64 Intel processor

[JMH]

Given how long 64-bit processors have been on the market, it's a bit surprising to see a vulnerability that takes advantage of AMD's x86-64 instruction set on Intel processors surface this late in the game. The vulnerability was originally thought to be Linux-specific, but was only recently found to be exploitable in Windows, BSD, and potentially OS X.

http://www.theverge.com/2012/6/18/3092949/security-vulnerability-x86-64-intel-processor