Vulnerability Information
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Vulnerability Title
N/A
Vulnerability Description
The __switch_to function in arch/x86/kernel/process_64.c in the Linux kernel does not properly context-switch IOPL on 64-bit PV Xen guests, which allows local guest OS users to gain privileges, cause a denial of service (guest OS crash), or obtain sensitive information by leveraging I/O port access.
CVSS Information
N/A
Vulnerability Type
N/A
Vulnerability Title
Linux kernel 安全漏洞
Vulnerability Description
Linux kernel是美国Linux基金会发布的开源操作系统Linux所使用的内核。NFSv4 implementation是其中的一个分布式文件系统协议。 Linux kernel的arch/x86/kernel/process_64.c文件中的‘__switch_to’函数存在安全漏洞，该漏洞源于程序没有正确上下文切换64-bit PV Xen虚拟机上的IOPL。虚拟机端攻击者可借助I/O端口访问权限利用该漏洞获取权限，造成拒绝服务（虚拟机OS崩溃），或获取敏感信息。
CVSS Information
N/A
Vulnerability Type
N/A