CVE:CVE-2015-8551
CNNVD:CNNVD-201512-519
Xen是英国剑桥大学开发的一款开源的虚拟机监视器产品。该产品能够使不同和不兼容的操作系统运行在同一台计算机上，并支持在运行时进行迁移，保证正常运行并且避免宕机。
Xen的PCI后端驱动程序中存在安全漏洞。当程序运行在x86系统上并使用Linux 3.1.x版本至4.3.x版本作为驱动域时，本地攻击者可借助拥有passed-through MSI或MSI-X capable physical PCI设备访问权限和特制的XEN_PCI_OP_*操作序列的系统，利用该漏洞触发BUG条件，造成拒绝服务（空指针逆向引用和主机OS崩溃）。
solution:Upgrade linux linux_kernel to a higher version than 3.1.10,4.3.6,and avoid the version [3.1,3.1.10],[4.3.0,4.3.6]; Upgrade debian debian_linux to a higher version than 7.0,8.0,and avoid the version 7.0,8.0; Upgrade opensuse opensuse to a higher version than 13.1,and avoid the version 13.1; Upgrade suse linux_enterprise_desktop to a higher version than 11:sp4,12:sp1,and avoid the version 11:sp4,12:sp1; Upgrade suse linux_enterprise_real_time_extension to a higher version than 11:sp4,12:sp1,and avoid the version 11:sp4,12:sp1; Upgrade suse linux_enterprise_server to a higher version than 11,11:sp4,12:sp1,and avoid the version 11,11:sp4,12:sp1; Upgrade suse linux_enterprise_software_development_kit to a higher version than 11:sp4,12:sp1,and avoid the version 11:sp4,12:sp1; Upgrade suse linux_enterprise_workstation_extension to a higher version than 12:sp1,and avoid the version 12:sp1