Vulnerability Information
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Vulnerability Title
N/A
Vulnerability Description
The XEN_DOMCTL_memory_mapping hypercall in Xen 3.2.x through 4.5.x, when using a PCI passthrough device, is not preemptible, which allows local x86 HVM domain users to cause a denial of service (host CPU consumption) via a crafted request to the device model (qemu-dm).
CVSS Information
N/A
Vulnerability Type
N/A
Vulnerability Title
Xen‘XEN_DOMCTL_memory_mapping’超极调用输入验证漏洞
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4.5.x版本的‘XEN_DOMCTL_memory_mapping’超极调用中存在安全漏洞，该漏洞源于程序使用PCI透传设备时，MMIO映射操作是不可抢占的。远程攻击者可通过向qemu-dm发送请求利用该漏洞造成拒绝服务（主机CPU消耗）。
CVSS Information
N/A
Vulnerability Type
N/A