CVE:CVE-2016-4037
CNNVD:CNNVD-201604-372
QEMU（又名Quick Emulator）是法国程序员法布里斯-贝拉（Fabrice Bellard）所研发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的hw/usb/hcd-ehci.c文件中的‘ehci_advance_state’函数存在安全漏洞。本地攻击者可借助循环的拆分同步名称描述符（iTD）列表利用该漏洞造成拒绝服务（无限循环和CPU消耗）。
solution:Upgrade fedoraproject fedora to a higher version than 22,23,24,and avoid the version 22,23,24; Upgrade canonical ubuntu_linux to a higher version than 12.04,14.04,15.10,16.04,and avoid the version 12.04,14.04,15.10,16.04; Upgrade qemu qemu to a higher version than 2.5.1,2.6.0:rc0,2.6.0:rc1,2.6.0:rc2,and avoid the version (,2.5.1],2.6.0:rc0,2.6.0:rc1,2.6.0:rc2; Upgrade debian debian_linux to a higher version than 8.0,and avoid the version 8.0