Vulnerability Information
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Vulnerability Title
N/A
Vulnerability Description
An issue was discovered in the Linux kernel through 4.17.11, as used in Xen through 4.11.x. The xen_failsafe_callback entry point in arch/x86/entry/entry_64.S does not properly maintain RBX, which allows local users to cause a denial of service (uninitialized memory usage and system crash). Within Xen, 64-bit x86 PV Linux guest OS users can trigger a guest OS crash or possibly gain privileges.
CVSS Information
N/A
Vulnerability Type
N/A
Vulnerability Title
Xen Linux kernel 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。Linux kernel是其中的一个Linux系统所使用的内核。 Xen 4.11.x及之前版本中使用的Linux kernel 4.17.11及之前版本存在安全漏洞，该漏洞源于程序在没有首先调用error_entry的情况下就调用error_exit。本地攻击者可利用该漏洞造成拒绝服务（使用未初始化内存和系统崩溃）或获取权限。
CVSS Information
N/A
Vulnerability Type
N/A