CVE:CVE-2021-3416
CNNVD:CNNVD-202102-1732
QEMU（Quick Emulator）是法国法布里斯-贝拉（Fabrice Bellard）个人开发者的一套模拟处理器软件。该软件具有速度快、跨平台等特点。
QEMU 5.2.0版本及之前版本存在安全漏洞。攻击者可利用该漏洞通过NIC环回模式触发致命错误，从而在主机系统上触发拒绝服务。
solution:Upgrade qemu qemu to a higher version than 5.2.0,and avoid the version (,5.2.0]; Upgrade fedoraproject fedora to a higher version than 33,and avoid the version 33; Upgrade redhat enterprise_linux to a higher version than 6.0,7.0,8.0,and avoid the version 6.0,7.0,8.0; Upgrade debian debian_linux to a higher version than 9.0,10.0,and avoid the version 9.0,10.0