Vulnerability Information
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Vulnerability Title
N/A
Vulnerability Description
Xen 4.2.x and 4.3.x, when using Intel VT-d and a PCI device has been assigned, does not clear the flag that suppresses IOMMU TLB flushes when unspecified errors occur, which causes the TLB entries to not be flushed and allows local guest administrators to cause a denial of service (host crash) or gain privileges via unspecified vectors.
CVSS Information
N/A
Vulnerability Type
N/A
Vulnerability Title
Xen 权限许可和访问控制漏洞
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.x和4.3.x版本中存在权限许可和访问控制漏洞。该漏洞源于当使用Intel VT-d和PCI设备进行分配时，程序没有清除在某些错误路径上暂时抑制IOMMU TLB刷新的内部标志，造成TLB不再被刷新。本地攻击者可利用该漏洞造成拒绝服务（主机崩溃）或获取权限。
CVSS Information
N/A
Vulnerability Type
N/A