Vulnerability Information
Although we use advanced large model technology, its output may still contain inaccurate or outdated information.Shenlong tries to ensure data accuracy, but please verify and judge based on the actual situation.
Vulnerability Title
N/A
Vulnerability Description
The PV superpage functionality in arch/x86/mm.c in Xen 3.4.0, 3.4.1, and 4.1.x through 4.6.x allows local PV guests to obtain sensitive information, cause a denial of service, gain privileges, or have unspecified other impact via a crafted page identifier (MFN) to the (1) MMUEXT_MARK_SUPER or (2) MMUEXT_UNMARK_SUPER sub-op in the HYPERVISOR_mmuext_op hypercall or (3) unknown vectors related to page table updates.
CVSS Information
N/A
Vulnerability Type
N/A
Vulnerability Title
Xen‘PV superpage’函数安全漏洞
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的arch/x86/mm.c文件中的‘PV superpage’函数存在安全漏洞，该漏洞源于HYPERVISOR_mmuext_op超级调用中的MMUEXT_MARK_SUPER和MMUEXT_UNMARK_SUPER sub-op没有正确验证页面标识符（MFN）；程序执行页表更新时没有正确验证输入数据。本地PV虚拟机端攻击者可利用该漏洞获
CVSS Information
N/A
Vulnerability Type
N/A