CVE:CVE-2018-15594
CNNVD:CNNVD-201808-628
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。
Linux kernel 4.18.1之前版本中存在安全漏洞，该漏洞源于arch/x86/kernel/paravirt.c文件没有正确地处理非直接的调用。攻击者可利用该漏洞将内存内容泄露到CPU缓存中并读取主机内核内存。
solution:Upgrade debian debian_linux to a higher version than 8.0,9.0,and avoid the version 8.0,9.0; Upgrade canonical ubuntu_linux to a higher version than 12.04,14.04,16.04,18.04,and avoid the version 12.04,14.04,16.04,18.04; Upgrade linux linux_kernel to a higher version than 4.18.1,and avoid the version (,4.18.1)