CVE:CVE-2020-27670
CNNVD:CNNVD-202010-1265
Xen是英国剑桥大学的一款开源的虚拟机监视器产品。该产品能够使不同和不兼容的操作系统运行在同一台计算机上，并支持在运行时进行迁移，保证正常运行并且避免宕机。
Xen 4.14.x 系列版本及之前版本存在安全漏洞，该漏洞使x86 guest虚拟机OS用户可以拒绝服务，导致数据泄漏或可能获得特权。
solution:Upgrade xen xen to a higher version than 4.14.0,and avoid the version (,4.14.0]; Upgrade opensuse leap to a higher version than 15.1,15.2,and avoid the version 15.1,15.2; Upgrade fedoraproject fedora to a higher version than 31,and avoid the version 31; Upgrade debian debian_linux to a higher version than 10.0,and avoid the version 10.0