Vulnerability Information
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Vulnerability Title
N/A
Vulnerability Description
FreeBSD 5.x to 5.4 on AMD64 does not properly initialize the IO permission bitmap used to allow user access to certain hardware, which allows local users to bypass intended access restrictions to cause a denial of service, obtain sensitive information, and possibly gain privileges.
CVSS Information
N/A
Vulnerability Type
N/A
Vulnerability Title
FreeBSD Kernel AMD64非特权硬件访问漏洞
Vulnerability Description
FreeBSD就是一种运行在Intel平台上，可以自由使用的Unix系统。 AMD64架构有两种允许进程访问硬件的机制：Kernel代码由于其提升的权限级别可以直接访问硬件，而用户代码可以访问由位图确定的硬件子集。由于确定非特权进程可以访问哪些硬件的位图没有正确的初始化，amd64系统上的非特权用户可以直接访问某些硬件，导致拒绝服务，泄漏敏感信息，或权限提升。
CVSS Information
N/A
Vulnerability Type
N/A