1. 修复的CVE CVE-2021-31535 X.Org libX11是X.Org（X.org）基金会的一个X11（X Window系统）客户端库。libX11 存在安全漏洞，该漏洞源于XLookupColor和其他X库函数缺乏对其字符串参数长度的适当验证。 2. 受影响的操作系统及软件包 ·银河麒麟桌面操作系统V4 libx11-6 libx11-data libx11-dev libx11-doc libx11-xcb-dev libx11-xcb1 ·银河麒麟桌面操作系统V10 libx11-6 libx11-data libx11-dev libx11-doc libx11-xcb-dev libx11-xcb1 ·银河麒麟桌面操作系统V10 SP1 libx11-6 libx11-data libx11-dev libx11-doc libx11-xcb-dev libx11-xcb1 3. 软件包修复版本 软件包：libx11 1.6.3-1kord2.2+esm1（V4、V10） 2:1.6.9-2kylin1.2(V10 SP1) 4. 修复方法 方法一：配置源进行升级安装 打开软件包源配置文件，根据仓库地址进行修改。 4.0.2-sp1: http://archive.kylinos.cn/kylin/KYLIN-ALL 4.0.2sp1-desktop main restricted universe multiverse 4.0.2-sp2: http://archive.kylinos.cn/kylin/KYLIN-ALL 4.0.2sp2-desktop main restricted universe multiverse 4.0.2-sp3: http://archive.kylinos.cn/kylin/KYLIN-ALL 4.0.2sp3-desktop main restricted universe multiverse 4.0.2-sp4: http://archive.kylinos.cn/kylin/KYLIN-ALL 4.0.2sp4-desktop main restricted universe multiverse 10.0: http://archive.kylinos.cn/kylin/KYLIN-ALL 10.0 main restricted universe multiverse 10.0 SP1: http://archive.kylinos.cn/kylin/KYLIN-ALL 10.1 main restricted universe multiverse 配置完成后执行更新命令进行升级 $sudo apt update 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组件包列表 升级相关的组件包。 #dpkg -i Packagelists 5. 软件包下载地址 麒麟操作系统V10桌面版、V4 X86_64软件包下载地址： http://archive.kylinos.cn/kylin/KYLIN-ALL/pool/main/libx/libx11/libx11-6-dbg_1.6.3-1kord2.2+esm1_amd64.deb http://archive.kylinos.cn/kylin/KYLIN-ALL/pool/main/libx/libx11/libx11-6_1.6.3-1kord2.2+esm1_amd64.deb http://archive.kylinos.cn/kylin/KYLIN-ALL/pool/main/libx/libx11/libx11-data_1.6.3-1kord2.2+esm1_all.deb http://archive.kylinos.cn/kylin/KYLIN-ALL/pool/main/libx/libx11/libx11-dev_1.6.3-1kord2.2+esm1_amd64.deb http://archive.kylinos.cn/kylin/KYLIN-ALL/pool/main/libx/libx11/libx11-doc_1.6.3-1kord2.2+esm1_all.deb http://archive.kylinos.cn/kylin/KYLIN-ALL/pool/main/libx/libx11/libx11-xcb-dev_1.6.3-1kord2.2+esm1_amd64.deb http://archive.kylinos.cn/kylin/KYLIN-ALL/pool/main/libx/libx11/libx11-xcb1-dbg_1.6.3-1kord2.2+esm1_amd64.deb http://archive.kylinos.cn/kylin/KYLIN-ALL/pool/main/libx/libx11/libx11-xcb1_1.6.3-1kord2.2+esm1_amd64.deb arm64软件包下载地址 http://archive.kylinos.cn/kylin/KYLIN-ALL/pool/main/libx/libx11/libx11-6-dbg_1.6.3-1kord2.2+esm1_arm64.deb http://archive.kylinos.cn/kylin/KYLIN-ALL/pool/main/libx/libx11/libx11-6_1.6.3-1kord2.2+esm1_arm64.deb http://archive.kylinos.cn/kylin/KYLIN-ALL/pool/main/libx/libx11/libx11-data_1.6.3-1kord2.2+esm1_all.deb http://archive.kylinos.cn/kylin/KYLIN-ALL/pool/main/libx/libx11/libx11-dev_1.6.3-1kord2.2+esm1_arm64.deb http://archive.kylinos.cn/kylin/KYLIN-ALL/pool/main/libx/libx11/libx11-doc_1.6.3-1kord2.2+esm1_all.deb http://archive.kylinos.cn/kylin/KYLIN-ALL/pool/main/libx/libx11/libx11-xcb-dev_1.6.3-1kord2.2+esm1_arm64.deb http://archive.kylinos.cn/kylin/KYLIN-ALL/pool/main/libx/libx11/libx11-xcb1-dbg_1.6.3-1kord2.2+esm1_arm64.deb http://archive.kylinos.cn/kylin/KYLIN-ALL/pool/main/libx/libx11/libx11-xcb1_1.6.3-1kord2.2+esm1_arm64.deb 麒麟操作系统桌面版V10 SP1 X86_64软件包下载地址： http://archive.kylinos.cn/kylin/KYLIN-ALL/pool/main/libx/libx11/libx11-6_1.6.9-2kylin1.2_amd64.deb http://archive.kylinos.cn/kylin/KYLIN-ALL/pool/main/libx/libx11/libx11-data_1.6.9-2kylin1.2_all.deb http://archive.kylinos.cn/kylin/KYLIN-ALL/pool/main/libx/libx11/libx11-xcb-dev_1.6.9-2kylin1.2_amd64.deb http://archive.kylinos.cn/kylin/KYLIN-ALL/pool/main/libx/libx11/libx11-xcb1_1.6.9-2kylin1.2_amd64.deb http://archive.kylinos.cn/kylin/KYLIN-ALL/pool/main/libx/libx11/libx11-doc_1.6.9-2kylin1.2_all.deb http://archive.kylinos.cn/kylin/KYLIN-ALL/pool/main/libx/libx11/libx11-dev_1.6.9-2kylin1.2_amd64.deb arm64软件包下载地址 http://archive.kylinos.cn/kylin/KYLIN-ALL/pool/main/libx/libx11/libx11-6_1.6.9-2kylin1.2_arm64.deb http://archive.kylinos.cn/kylin/KYLIN-ALL/pool/main/libx/libx11/libx11-data_1.6.9-2kylin1.2_all.deb http://archive.kylinos.cn/kylin/KYLIN-ALL/pool/main/libx/libx11/libx11-xcb-dev_1.6.9-2kylin1.2_arm64.deb http://archive.kylinos.cn/kylin/KYLIN-ALL/pool/main/libx/libx11/libx11-xcb1_1.6.9-2kylin1.2_arm64.deb http://archive.kylinos.cn/kylin/KYLIN-ALL/pool/main/libx/libx11/libx11-doc_1.6.9-2kylin1.2_all.deb http://archive.kylinos.cn/kylin/KYLIN-ALL/pool/main/libx/libx11/libx11-dev_1.6.9-2kylin1.2_arm64.deb mips64el软件包下载地址 http://archive.kylinos.cn/kylin/KYLIN-ALL/pool/main/libx/libx11/libx11-6_1.6.9-2kylin1.2_mips64el.deb http://archive.kylinos.cn/kylin/KYLIN-ALL/pool/main/libx/libx11/libx11-data_1.6.9-2kylin1.2_all.deb http://archive.kylinos.cn/kylin/KYLIN-ALL/pool/main/libx/libx11/libx11-xcb-dev_1.6.9-2kylin1.2_mips64el.deb http://archive.kylinos.cn/kylin/KYLIN-ALL/pool/main/libx/libx11/libx11-xcb1_1.6.9-2kylin1.2_mips64el.deb http://archive.kylinos.cn/kylin/KYLIN-ALL/pool/main/libx/libx11/libx11-doc_1.6.9-2kylin1.2_all.deb http://archive.kylinos.cn/kylin/KYLIN-ALL/pool/main/libx/libx11/libx11-dev_1.6.9-2kylin1.2_mips64el.deb 6. 修复验证 使用软件包查询命令，查看相关的软件包版本大于或等于修复版本则成功修复。 $sudo dpkg -l |grep Package 注：Package为软件包包名。