CVE:CVE-1999-0703
CNNVD:CNNVD-199908-005
OpenBSD， BSDI，和其它 Unix操作系统存在漏洞。用户可以借助此漏洞在字段和块设备上设置ch标志和 fch标志。
solution:Upgrade bsdi bsd_os to a higher version than 3.2,and avoid the version 3.2; Upgrade freebsd freebsd to a higher version than 3.2,and avoid the version 3.2; Upgrade openbsd openbsd to a higher version than 2.5,and avoid the version 2.5