CVE:CVE-2004-0814
CNNVD:CNNVD-200412-092
Linux 2.6.9以前的2.4.x，和2.6.x版本的终端层存在多个竞态条件漏洞。（1）本地用户通过调用TIOCSETD ioctl到正在访问另一个线程的终端接口获得核心数据部分，或者（2）远程攻击者通过从控制台切换到PPP线路规则导致服务拒绝，然后迅速发送交换机接收到的数据。
solution:Upgrade linux linux_kernel to a higher version than 2.2.0,2.2.1,2.2.2,2.2.3,2.2.7,2.2.8,2.2.9,2.2.10,2.2.11,2.2.12,2.2.13,2.2.14,2.2.15,2.2.15:pre16,2.2.15_pre20,2.2.16,2.2.16:pre6,2.2.17,2.2.18,2.2.19,2.2.20,2.2.21,2.2.22,2.2.23,2.2.24,2.2.25,2.4.0,2.4.0:test1,2.4.0:test10,2.4.0:test11,2.4.0:test12,2.4.0:test2,2.4.0:test3,2.4.0:test4,2.4.0:test5,2.4.0:test6,2.4.0:test7,2.4.0:test8,2.4.0:test9,2.4.1,2.4.2,2.4.3,2.4.4,2.4.5,2.4.6,2.4.7,2.4.8,2.4.9,2.4.10,2.4.11,2.4.12,2.4.13,2.4.14,2.4.15,2.4.16,2.4.17,2.4.18,2.4.18:pre1,2.4.18:pre2,2.4.18:pre3,2.4.18:pre4,2.4.18:pre5,2.4.18:pre6,2.4.18:pre7,2.4.18:pre8,2.4.19,2.4.19:pre1,2.4.19:pre2,2.4.19:pre3,2.4.19:pre4,2.4.19:pre5,2.4.19:pre6,2.4.20,2.4.21,2.4.21:pre1,2.4.21:pre4,2.4.21:pre7,2.4.22,2.4.23,2.4.23:pre9,2.4.23_ow2,2.4.24,2.4.24_ow1,2.4.25,2.4.26,2.4.27:pre1,2.4.27:pre2,2.4.27:pre3,2.4.27:pre4,2.4.27:pre5,2.6.0,2.6.0:test1,2.6.0:test10,2.6.0:test11,2.6.0:test2,2.6.0:test3,2.6.0:test4,2.6.0:test5,2.6.0:test6,2.6.0:test7,2.6.0:test8,2.6.0:test9,2.6.1,2.6.1:rc1,2.6.1:rc2,2.6.2,2.6.3,2.6.4,2.6.5,2.6.6,2.6.6:rc1,2.6.7,2.6.7:rc1,2.6.8:rc1,2.6.8:rc2,2.6.8:rc3,2.6_test9_cvs,and avoid the version 2.2.0,2.2.1,2.2.2,2.2.3,2.2.7,2.2.8,2.2.9,2.2.10,2.2.11,2.2.12,2.2.13,2.2.14,2.2.15,2.2.15:pre16,2.2.15_pre20,2.2.16,2.2.16:pre6,2.2.17,2.2.18,2.2.19,2.2.20,2.2.21,2.2.22,2.2.23,2.2.24,2.2.25,2.4.0,2.4.0:test1,2.4.0:test10,2.4.0:test11,2.4.0:test12,2.4.0:test2,2.4.0:test3,2.4.0:test4,2.4.0:test5,2.4.0:test6,2.4.0:test7,2.4.0:test8,2.4.0:test9,2.4.1,2.4.2,2.4.3,2.4.4,2.4.5,2.4.6,2.4.7,2.4.8,2.4.9,2.4.10,2.4.11,2.4.12,2.4.13,2.4.14,2.4.15,2.4.16,2.4.17,2.4.18,2.4.18:pre1,2.4.18:pre2,2.4.18:pre3,2.4.18:pre4,2.4.18:pre5,2.4.18:pre6,2.4.18:pre7,2.4.18:pre8,2.4.19,2.4.19:pre1,2.4.19:pre2,2.4.19:pre3,2.4.19:pre4,2.4.19:pre5,2.4.19:pre6,2.4.20,2.4.21,2.4.21:pre1,2.4.21:pre4,2.4.21:pre7,2.4.22,2.4.23,2.4.23:pre9,2.4.23_ow2,2.4.24,2.4.24_ow1,2.4.25,2.4.26,2.4.27:pre1,2.4.27:pre2,2.4.27:pre3,2.4.27:pre4,2.4.27:pre5,2.6.0,2.6.0:test1,2.6.0:test10,2.6.0:test11,2.6.0:test2,2.6.0:test3,2.6.0:test4,2.6.0:test5,2.6.0:test6,2.6.0:test7,2.6.0:test8,2.6.0:test9,2.6.1,2.6.1:rc1,2.6.1:rc2,2.6.2,2.6.3,2.6.4,2.6.5,2.6.6,2.6.6:rc1,2.6.7,2.6.7:rc1,2.6.8:rc1,2.6.8:rc2,2.6.8:rc3,2.6_test9_cvs; Upgrade ubuntu ubuntu_linux to a higher version than 4.1,and avoid the version 4.1