Vulnerability Information
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Vulnerability Title
N/A
Vulnerability Description
The grant-table feature in Xen through 4.8.x mishandles a GNTMAP_device_map and GNTMAP_host_map mapping, when followed by only a GNTMAP_host_map unmapping, which allows guest OS users to cause a denial of service (count mismanagement and memory corruption) or obtain privileged host OS access, aka XSA-224 bug 1.
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 4.8.x及之前的版本中的grant-table功能存在安全漏洞，该漏洞源于程序没有正确的处理GNTMAP_device_map和GNTMAP_host_map的映射。攻击者可利用该漏洞造成拒绝服务（内存损坏）或获取主机操作系统的访问权限。
CVSS Information
N/A
Vulnerability Type
N/A