Vulnerability Information
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Vulnerability Title
N/A
Vulnerability Description
The do_mmu_update function in arch/x86/mm.c in Xen 3.2.x through 4.4.x does not properly manage page references, which allows remote domains to cause a denial of service by leveraging control over an HVM guest and a crafted MMU_MACHPHYS_UPDATE.
CVSS Information
N/A
Vulnerability Type
N/A
Vulnerability Title
Xen 输入验证漏洞
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 3.2.x版本至4.4.x版本的arch/x86/mm.c文件中‘do_mmu_update’函数存在安全漏洞，该漏洞源于程序没有正确处理MMU_MACHPHYS_UPDATE。远程攻击者可利用该漏洞以虚拟机操作系统访问权限造成拒绝服务（主机操作系统崩溃）。
CVSS Information
N/A
Vulnerability Type
N/A