CVE:CVE-1999-1214
CNNVD:CNNVD-199709-012
4.4BSD内核的asynchronous I/O设备设置I/O通知接受者时不检查用户证书，本地用户可以利用该漏洞通过使用某些ioctl和fcntl请求将信号发送至任意进程的ID。
solution:Upgrade sgi irix to a higher version than *; Upgrade bsd bsd to a higher version than *,4.4,and avoid the version 4.4; Upgrade freebsd freebsd to a higher version than 6.2:stable,and avoid the version 6.2:stable; Upgrade netbsd netbsd to a higher version than 2.0.4,and avoid the version 2.0.4; Upgrade openbsd openbsd to a higher version than 2.1,and avoid the version 2.1