CVE:CVE-2014-9585
CNNVD:CNNVD-201501-193
Linux kernel是美国Linux基金会发布的开源操作系统Linux所使用的内核。NFSv4 implementation是其中的一个分布式文件系统协议。
Linux kernel 3.18.2及之前版本的arch/x86/vdso/vma.c文件中的‘vdso_addr’函数存在安全漏洞，该漏洞源于程序没有正确为vDSO区域选择内存地址。本地攻击者可通过猜测PMD的结束位置利用该漏洞绕过ASLR保护机制。
solution:Upgrade linux linux_kernel to a higher version than 3.18.2,and avoid the version (,3.18.2]; Upgrade redhat enterprise_linux_aus to a higher version than 6.6,and avoid the version 6.6; Upgrade redhat enterprise_linux_desktop to a higher version than 6.0,7.0,and avoid the version 6.0,7.0; Upgrade redhat enterprise_linux_eus to a higher version than 6.6,and avoid the version 6.6; Upgrade redhat enterprise_linux_server to a higher version than 6.0,7.0,and avoid the version 6.0,7.0; Upgrade redhat enterprise_linux_server_aus to a higher version than 7.3,7.4,7.6,7.7,and avoid the version 7.3,7.4,7.6,7.7; Upgrade redhat enterprise_linux_server_eus to a higher version than 7.1,7.2,7.3,7.4,7.5,7.6,7.7,and avoid the version 7.1,7.2,7.3,7.4,7.5,7.6,7.7; Upgrade redhat enterprise_linux_server_tus to a higher version than 6.6,7.3,7.6,7.7,and avoid the version 6.6,7.3,7.6,7.7; Upgrade redhat enterprise_linux_workstation to a higher version than 6.0,7.0,and avoid the version 6.0,7.0; Upgrade opensuse evergreen to a higher version than 11.4,and avoid the version 11.4; Upgrade opensuse opensuse to a higher version than 13.1,and avoid the version 13.1; Upgrade suse linux_enterprise_desktop to a higher version than 12,and avoid the version 12; Upgrade suse linux_enterprise_real_time_extension to a higher version than 11:sp3,and avoid the version 11:sp3; Upgrade suse linux_enterprise_server to a higher version than 11:sp1,11:sp2,12,and avoid the version 11:sp1,11:sp2,12; Upgrade suse linux_enterprise_software_development_kit to a higher version than 12,and avoid the version 12; Upgrade suse linux_enterprise_workstation_extension to a higher version than 12,and avoid the version 12; Upgrade fedoraproject fedora to a higher version than 21,and avoid the version 21; Upgrade debian debian_linux to a higher version than 7.0,8.0,and avoid the version 7.0,8.0; Upgrade canonical ubuntu_linux to a higher version than 12.04,14.04,14.10,and avoid the version 12.04,14.04,14.10