CVE:CVE-2003-1234
CNNVD:CNNVD-200312-477
FreeBSD 4.2至5.0版本之前的f_count计数器存在整数溢出漏洞。本地用户可以借助多个对（1）fpathconf和（2）lseek的调用导致服务拒绝（崩溃）并可能执行任意代码，该漏洞在调用fdrop时f_count不能自动减一。
solution:Upgrade freebsd freebsd to a higher version than 1.1.5.1,2.1.0,2.1.5,2.1.6,2.1.6.1,2.1.7,2.1.7.1,2.2,2.2:current,2.2.1,2.2.2,2.2.3,2.2.4,2.2.5,2.2.6,2.2.7,2.2.8,3.1,3.2,3.3,3.4,3.5,3.5.1:release,4.2,4.3,4.3:release,4.4,4.5,4.5:release,4.6,4.6:release,4.7,4.7:release,4.9:releng,4.10,4.10:release,4.10:release_p8,4.10:releng,4.11,4.11:release_p3,4.11:releng,4.11:stable,5.0,and avoid the version 1.1.5.1,2.1.0,2.1.5,2.1.6,2.1.6.1,2.1.7,2.1.7.1,2.2,2.2:current,2.2.1,2.2.2,2.2.3,2.2.4,2.2.5,2.2.6,2.2.7,2.2.8,3.1,3.2,3.3,3.4,3.5,3.5.1:release,4.2,4.3,4.3:release,4.4,4.5,4.5:release,4.6,4.6:release,4.7,4.7:release,4.9:releng,4.10,4.10:release,4.10:release_p8,4.10:releng,4.11,4.11:release_p3,4.11:releng,4.11:stable,5.0