CVE:CVE-2009-4410
CNNVD:CNNVD-200912-343
Linux kernel是最受欢迎的自由电脑操作系统内核。Linux kernel 2.6.29-rc1到2.6.30.y中的fs/fuse/file.c中的ioctl管理者中的fuse_ioctl_copy_user函数在kunmap函数的一个字符中使用错误变量，本地用户可以借助未明向量造成一个拒绝服务。
solution:Upgrade linux linux_kernel to a higher version than 2.6.29,2.6.29:git1,2.6.29:rc1,2.6.29:rc2,2.6.29:rc2_git7,2.6.29:rc8-kk,2.6.29.1,2.6.29.2,2.6.29.3,2.6.29.4,2.6.29.5,2.6.29.6,2.6.29.rc1,2.6.29.rc2,2.6.29.rc2-git1,2.6.30,2.6.30:rc1,2.6.30:rc2,2.6.30:rc3,2.6.30:rc4,2.6.30:rc5,2.6.30:rc6,2.6.30:rc7-git6,2.6.30.1,2.6.30.2,2.6.30.3,2.6.30.4,2.6.30.5,2.6.30.6,2.6.30.7,2.6.30.8,2.6.30.9,2.6.30.y,and avoid the version 2.6.29,2.6.29:git1,2.6.29:rc1,2.6.29:rc2,2.6.29:rc2_git7,2.6.29:rc8-kk,2.6.29.1,2.6.29.2,2.6.29.3,2.6.29.4,2.6.29.5,2.6.29.6,2.6.29.rc1,2.6.29.rc2,2.6.29.rc2-git1,2.6.30,2.6.30:rc1,2.6.30:rc2,2.6.30:rc3,2.6.30:rc4,2.6.30:rc5,2.6.30:rc6,2.6.30:rc7-git6,2.6.30.1,2.6.30.2,2.6.30.3,2.6.30.4,2.6.30.5,2.6.30.6,2.6.30.7,2.6.30.8,2.6.30.9,2.6.30.y