Vulnerability Information
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Vulnerability Title
N/A
Vulnerability Description
The compat_iret function in Xen 3.1 through 4.5 iterates the wrong way through a loop, which allows local 32-bit PV guest administrators to cause a denial of service (large loop and system hang) via a hypercall_iret call with EFLAGS.VM set.
CVSS Information
N/A
Vulnerability Type
N/A
Vulnerability Title
Xen‘compat_iret’函数资源管理错误漏洞
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 3.1版本至4.5版本的‘compat_iret’函数中存在安全漏洞，该漏洞源于程序中的循环使用错误的方式迭代。本地虚拟机端攻击者可借助带有EFLAGS.VM集的hypercall_iret调用利用该漏洞造成拒绝服务（系统挂起）。
CVSS Information
N/A
Vulnerability Type
N/A