1.修复的CVE ·CVE-2021-3472 描述：X.Org X Server是X.Org（X.org）基金会的一款X Window系统显示服务器。X.Org Server 存在数字错误漏洞，该漏洞允许本地用户升级系统上的特权。这是由于XChangeFeedbackControl()函数内的整数下溢。 2.受影响的软件包 ·中标麒麟高级服务器操作系统 V7 aarch64架构: xorg-x11-server-Xdmx、xorg-x11-server-Xephyr、xorg-x11-server-Xnest、xorg-x11-server-Xorg、xorg-x11-server-Xvfb、xorg-x11-server-Xwayland、xorg-x11-server-common、xorg-x11-server-devel、xorg-x11-server-source x86_64架构: xorg-x11-server-Xdmx、xorg-x11-server-Xephyr、xorg-x11-server-Xnest、xorg-x11-server-Xorg、xorg-x11-server-Xvfb、xorg-x11-server-Xwayland、xorg-x11-server-common、xorg-x11-server-devel、xorg-x11-server-source 3.软件包修复版本 ·中标麒麟高级服务器操作系统 V7 xorg-x11-server-Xdmx-1.20.4-16.el7_9 xorg-x11-server-Xephyr-1.20.4-16.el7_9 xorg-x11-server-Xnest-1.20.4-16.el7_9 xorg-x11-server-Xorg-1.20.4-16.el7_9 xorg-x11-server-Xvfb-1.20.4-16.el7_9 xorg-x11-server-Xwayland-1.20.4-16.el7_9 xorg-x11-server-common-1.20.4-16.el7_9 xorg-x11-server-devel-1.20.4-16.el7_9 xorg-x11-server-source-1.20.4-16.el7_9 4.修复方法 方法一：配置源进行升级安装 370.打开软件包源配置文件，根据仓库地址进行修改。 仓库源地址： 中标麒麟高级服务器操作系统 V7 aarch64:https://update.cs2c.com.cn/NS/V7/V7Update9/os/adv/lic/updates/aarch64/ x86_64:https://update.cs2c.com.cn/NS/V7/V7Update9/os/adv/lic/updates/x86_64/ 371.配置完成后执行更新命令进行升级，命令如下： yum update Packagename 方法二：下载安装包进行升级安装 通过软件包地址下载软件包，使用软件包升级命令根据受影响的软件包 列表进行升级安装,命令如下： yum install Packagename 372.升级完成后是否需要重启服务或操作系统： ·CVE-2021-3472：需要重启 xorg-x11-server 以使漏洞修复生效。 5.软件包下载地址 ·中标麒麟高级服务器操作系统 V7 xorg-x11-server（aarch64）软件包下载地址: https://update.cs2c.com.cn/NS/V7/V7Update9/os/adv/lic/updates/aarch64/Packages/xorg-x11-server-Xdmx-1.20.4-16.el7_9.aarch64.rpm https://update.cs2c.com.cn/NS/V7/V7Update9/os/adv/lic/updates/aarch64/Packages/xorg-x11-server-Xephyr-1.20.4-16.el7_9.aarch64.rpm https://update.cs2c.com.cn/NS/V7/V7Update9/os/adv/lic/updates/aarch64/Packages/xorg-x11-server-Xnest-1.20.4-16.el7_9.aarch64.rpm https://update.cs2c.com.cn/NS/V7/V7Update9/os/adv/lic/updates/aarch64/Packages/xorg-x11-server-Xorg-1.20.4-16.el7_9.aarch64.rpm https://update.cs2c.com.cn/NS/V7/V7Update9/os/adv/lic/updates/aarch64/Packages/xorg-x11-server-Xvfb-1.20.4-16.el7_9.aarch64.rpm https://update.cs2c.com.cn/NS/V7/V7Update9/os/adv/lic/updates/aarch64/Packages/xorg-x11-server-Xwayland-1.20.4-16.el7_9.aarch64.rpm https://update.cs2c.com.cn/NS/V7/V7Update9/os/adv/lic/updates/aarch64/Packages/xorg-x11-server-common-1.20.4-16.el7_9.aarch64.rpm https://update.cs2c.com.cn/NS/V7/V7Update9/os/adv/lic/updates/aarch64/Packages/xorg-x11-server-devel-1.20.4-16.el7_9.aarch64.rpm https://update.cs2c.com.cn/NS/V7/V7Update9/os/adv/lic/updates/aarch64/Packages/xorg-x11-server-source-1.20.4-16.el7_9.noarch.rpm xorg-x11-server（x86_64）软件包下载地址: https://update.cs2c.com.cn/NS/V7/V7Update9/os/adv/lic/updates/x86_64/Packages/xorg-x11-server-Xdmx-1.20.4-16.el7_9.x86_64.rpm https://update.cs2c.com.cn/NS/V7/V7Update9/os/adv/lic/updates/x86_64/Packages/xorg-x11-server-Xephyr-1.20.4-16.el7_9.x86_64.rpm https://update.cs2c.com.cn/NS/V7/V7Update9/os/adv/lic/updates/x86_64/Packages/xorg-x11-server-Xnest-1.20.4-16.el7_9.x86_64.rpm https://update.cs2c.com.cn/NS/V7/V7Update9/os/adv/lic/updates/x86_64/Packages/xorg-x11-server-Xorg-1.20.4-16.el7_9.x86_64.rpm https://update.cs2c.com.cn/NS/V7/V7Update9/os/adv/lic/updates/x86_64/Packages/xorg-x11-server-Xvfb-1.20.4-16.el7_9.x86_64.rpm https://update.cs2c.com.cn/NS/V7/V7Update9/os/adv/lic/updates/x86_64/Packages/xorg-x11-server-Xwayland-1.20.4-16.el7_9.x86_64.rpm https://update.cs2c.com.cn/NS/V7/V7Update9/os/adv/lic/updates/x86_64/Packages/xorg-x11-server-common-1.20.4-16.el7_9.x86_64.rpm https://update.cs2c.com.cn/NS/V7/V7Update9/os/adv/lic/updates/x86_64/Packages/xorg-x11-server-devel-1.20.4-16.el7_9.i686.rpm https://update.cs2c.com.cn/NS/V7/V7Update9/os/adv/lic/updates/x86_64/Packages/xorg-x11-server-devel-1.20.4-16.el7_9.x86_64.rpm https://update.cs2c.com.cn/NS/V7/V7Update9/os/adv/lic/updates/x86_64/Packages/xorg-x11-server-source-1.20.4-16.el7_9.noarch.rpm 注：其他相关依赖包请到相同目录下载 6.修复验证 使用软件包查询命令，查看相关软件包版本是否与修复版本一致，如果版本一致，则说明修复成功。 sudo rpm -qa | grep Packagename