http://kerneltrap.org/node/5103
This flaw permits local information disclosure, including allowing an unprivileged user to steal an RSA private key being used on the same machine. Administrators of multi-user systems are strongly advised to take action to disable Hyper-Threading immediately
HT功能恐怕會讓一個unprivilege user偷取RSA key
影響範圍是所有有用到HT功能的OS
建議立刻關掉CPU的HT功能