Vulnerability Information
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Vulnerability Title
N/A
Vulnerability Description
Certain MMU virtualization operations in Xen 4.2.x through 4.4.x, when using shadow pagetables, are not preemptible, which allows local HVM guest to cause a denial of service (vcpu consumption) by invoking these operations, which process every page assigned to a guest, a different vulnerability than CVE-2014-5146.
CVSS Information
N/A
Vulnerability Type
N/A
Vulnerability Title
Xen 安全漏洞
Vulnerability Description
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 4.2.x至4.4.x版本的MMU虚拟化操作中存在安全漏洞，该漏洞源于程序使用shadow pagetables时，存在错误。本地攻击者可通过调用这些操作利用该漏洞造成拒绝服务（vcpu损耗）。
CVSS Information
N/A
Vulnerability Type
N/A