Vulnerability Information
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Vulnerability Title
N/A
Vulnerability Description
The kqueue mechanism in FreeBSD 4.3 through 4.6 STABLE allows local users to cause a denial of service (kernel panic) via a pipe call in which one end is terminated and an EVFILT_WRITE filter is registered for the other end.
CVSS Information
N/A
Vulnerability Type
N/A
Vulnerability Title
FreeBSD kqueue机制本地拒绝服务漏洞
Vulnerability Description
FreeBSD 提供了一个kqueue机制使进程可以对感兴趣的与特定文件描述符有关的特定事件进行注册，并在与所选描述符有关的这些事件发生时接收异步通知。 FreeBSD 4.6以及以前的系统中kqueue实现中存在一个安全漏洞，可能允许本地攻击者使系统崩溃。 如果pipe(2)系统调用创建了一个管道，且该管道一端被封闭，那么在管道另一端注册EVFILT_WRITE过滤器就会导致kernel崩溃。常出现这一问题的情况是进程使用一个管道与子进程进行通信时使用kqueue监视该管道，而子进程在fork(2)调用
CVSS Information
N/A
Vulnerability Type
N/A