CVE:CVE-2021-26933
CNNVD:CNNVD-202102-1225
Xen 4.9 through 4.14.x 存在安全漏洞，该漏洞允许客户端控制内存访问绕过缓存。
solution:Upgrade xen xen to a higher version than 4.14.1,and avoid the version [4.9.0,4.14.1]; Upgrade fedoraproject fedora to a higher version than 32,33,and avoid the version 32,33; Upgrade debian debian_linux to a higher version than 10.0,and avoid the version 10.0