如 RHSA-2017:0817: kernel security, bug fix, and enhancement update (Moderate)

修復方案：

1. yum update kernel
2. yum update kernel-devel
3. yum update kernel-firmware
4. yum update kernel-headers

依次在控制臺輸出即可，會提示下載，到最後有一個 Y/N，選擇Y即可。

最後顯示Complete! 完成了。

另阿裏雲的46個漏洞所有修復命令

yum update kernel

yum update kernel-devel

yum update kernel-firmware

yum update kernel-headers

yum update openssh

yum update openssh-clients

yum update openssh-server

yum update ntp

yum update ntpdate

yum update libxml2

yum update libxml2-devel

yum update libxml2-python

yum update ntp

yum update ntpdate

yum update openssh

yum update openssh-clients

yum update openssh-server

yum update grep

yum update libreport

yum update libreport-cli

yum update libreport-compat

yum update libreport-plugin-kerneloops

yum update libreport-plugin-logger

yum update libreport-plugin-mailx

yum update libreport-plugin-reportuploader

yum update libreport-plugin-rhtsupport

yum update libreport-python

CentOS bug修復指令集（阿裏雲適用）