CVE:CVE-2021-3409
CNNVD:CNNVD-202103-684
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 存在缓冲区错误漏洞，攻击者可利用该漏洞触发内存损坏，从而触发拒绝服务，并可能在主机系统上运行代码。
solution:Upgrade qemu qemu to a higher version than 5.2.0,and avoid the version (,5.2.0]; Upgrade redhat enterprise_linux to a higher version than 7.0,and avoid the version 7.0; Upgrade fedoraproject fedora to a higher version than 33,and avoid the version 33; Upgrade debian debian_linux to a higher version than 9.0,and avoid the version 9.0