Vulnerability Information
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Vulnerability Title
N/A
Vulnerability Description
The guest_physmap_mark_populate_on_demand function in Xen 4.2 and earlier does not properly unlock the subject GFNs when checking if they are in use, which allows local guest HVM administrators to cause a denial of service (hang) via unspecified vectors.
CVSS Information
N/A
Vulnerability Type
N/A
Vulnerability Title
Xen ‘guest_physmap_mark_populate_on_demand()’函数本地拒绝服务漏洞
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和较早版本中的‘guest_physmap_mark_populate_on_demand’函数中存在漏洞，该漏洞源于程序检查主体GFNs是否正在被使用的情况下，没有对其进行正确的解锁。通过未明向量，具有访客HVM管理员权限的本地攻击者可利用该漏洞导致拒绝服务（挂起）。
CVSS Information
N/A
Vulnerability Type
N/A