Vulnerability Information
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Vulnerability Title
N/A
Vulnerability Description
PCI devices with RMRRs not deassigned correctly Certain PCI devices in a system might be assigned Reserved Memory Regions (specified via Reserved Memory Region Reporting, "RMRR"). These are typically used for platform tasks such as legacy USB emulation. If such a device is passed through to a guest, then on guest shutdown the device is not properly deassigned. The IOMMU configuration for these devices which are not properly deassigned ends up pointing to a freed data structure, including the IO Pagetables. Subsequent DMA or interrupts from the device will have unpredictable behaviour, ranging from IOMMU faults to memory corruption.
CVSS Information
N/A
Vulnerability Type
N/A
Vulnerability Title
Xen 资源管理错误漏洞
Vulnerability Description
Xen是英国剑桥（Cambridge）大学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 4.12之前版本存在资源管理错误漏洞，该漏洞源于未正确取消分配RMRR的PCI设备系统中的某些PCI设备可能已分配保留内存区域（通过保留内存区域报告“RMRR”指定）。
CVSS Information
N/A
Vulnerability Type
N/A