CVE:CVE-2018-15864
CNNVD:CNNVD-201808-791
xkbcommon是一个键盘键映射编译器和支持库。
xkbcommon 0.8.2之前版本中的xkbcomp/parser.y文件的‘resolve_keysym’函数存在安全漏洞。本地攻击者可通过提交特制的keymap文件利用该漏洞造成xkbcommon解析器崩溃（空指针逆向引用）。
solution:Upgrade xkbcommon libxkbcommon to a higher version than 0.8.1,and avoid the version (,0.8.1]; Upgrade xkbcommon xkbcommon to a higher version than 0.8.1,and avoid the version (,0.8.1]; Upgrade canonical ubuntu_linux to a higher version than 14.04,16.04,18.04,and avoid the version 14.04,16.04,18.04