On-demand cut off the covert channel to mitigate meltdown  

作　　者：Yusong TAN Baozi CHEN Liehuang ZHU Qingbo WU Peng ZOU Yuanzhang LI 

机构地区：[1]College of Computer Science,National University of Defense Technology,Changsha 410073,China [2]School of Computer Science and Technology,Beijing Institute of Technology,Beijing 100081,China

出　　处：《Science China(Information Sciences)》2021年第9期240-242,共3页中国科学（信息科学）（英文版）

基　　金：This work was supported by National S&T Major Project of China(Grant No.2016ZX01040101);National Natural Science Foundation of China(Grant Nos.61602498,61872444)。

摘　　要：Dear editor,Recently, researchers have discovered a new kind of attack named Meltdown [1] that exploits the out-of-order execution behavior of modern processors and side-channels. The adversary can use this method to overcome the memory isolation that is protected by a processor and read the entire kernel memory of a machine it executes on. Mitigating this new attack is thought to be expensive at the moment because current solutions are based on common optimization techniques for modern processors.

关 键 词：OVERCOME KERNEL protected 

分 类 号：TN918[电子电信—通信与信息系统]