CVE:CVE-2020-13800
CNNVD:CNNVD-202006-455
QEMU（Quick Emulator）是法国法布里斯-贝拉（Fabrice Bellard）软件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 4.2.0版本中的 hw/display/ati.c文件的ati-vga存在安全漏洞。攻击者可借助特制mm_index值利用该漏洞导致无限递归。
solution:Upgrade qemu qemu to a higher version than 4.2.0,and avoid the version 4.2.0; Upgrade canonical ubuntu_linux to a higher version than 16.04,18.04,20.04,and avoid the version 16.04,18.04,20.04; Upgrade opensuse leap to a higher version than 15.2,and avoid the version 15.2