1.修复的CVE

    CVE-2021-3939

    Canonical Ubuntu是英国科能（Canonical）公司的一套以桌面应用为主的GNU/Linux操作系统。Canonical Ubuntu 存在安全漏洞，该漏洞源于 Ubuntu 对accountsservice 的特定修改导致在user_change_language_authorized_cb 函数中指向静态存储的fallback_locale 变量被释放。

2.影响的操作系统

    银河麒麟桌面操作系统V10 SP1

3.修复版本

    软件包：accountsservice

    0.6.55-0kylin12~20.04.5k1(V10 SP1)

4.受影响的软件包

    ·银河麒麟桌面操作系统V10 SP1

    accountsservice

    gir1.2-accountsservice-1.0

    libaccountsservice-dev

    libaccountsservice-doc

    libaccountsservice0

5.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桌面版本:

    http://archive.kylinos.cn/kylin/KYLIN-ALL 4.0.2-desktop main restricted universe multiverse

    4.0.2-sp1桌面版本:

    http://archive.kylinos.cn/kylin/KYLIN-ALL 4.0.2sp1-desktop main restricted universe multiverse

    4.0.2-sp2桌面版本:

    http://archive.kylinos.cn/kylin/KYLIN-ALL 4.0.2sp2-desktop main restricted universe multiverse

    4.0.2-sp3桌面版本:

    http://archive.kylinos.cn/kylin/KYLIN-ALL 4.0.2sp3-desktop main restricted universe multiverse

    4.0.2-sp4桌面版本:

    http://archive.kylinos.cn/kylin/KYLIN-ALL 4.0.2sp4-desktop main restricted universe multiverse

    10.0版本:

    http://archive.kylinos.cn/kylin/KYLIN-ALL 10.0 main restricted universe multiverse

    10SP1版本:

    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

6.软件包下载地址

银河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/a/accountsservice/accountsservice_0.6.55-0kylin12~20.04.5k1_amd64.deb

http://archive.kylinos.cn/kylin/KYLIN-ALL/pool/main/a/accountsservice/gir1.2-accountsservice-1.0_0.6.55-0kylin12~20.04.5k1_amd64.deb

http://archive.kylinos.cn/kylin/KYLIN-ALL/pool/main/a/accountsservice/libaccountsservice-dev_0.6.55-0kylin12~20.04.5k1_amd64.deb

http://archive.kylinos.cn/kylin/KYLIN-ALL/pool/main/a/accountsservice/libaccountsservice-doc_0.6.55-0kylin12~20.04.5k1_all.deb

http://archive.kylinos.cn/kylin/KYLIN-ALL/pool/main/a/accountsservice/libaccountsservice0_0.6.55-0kylin12~20.04.5k1_amd64.deb

arm64软件包下载地址

http://archive.kylinos.cn/kylin/KYLIN-ALL/pool/main/a/accountsservice/accountsservice_0.6.55-0kylin12~20.04.5k1_arm64.deb

http://archive.kylinos.cn/kylin/KYLIN-ALL/pool/main/a/accountsservice/gir1.2-accountsservice-1.0_0.6.55-0kylin12~20.04.5k1_arm64.deb

http://archive.kylinos.cn/kylin/KYLIN-ALL/pool/main/a/accountsservice/libaccountsservice-dev_0.6.55-0kylin12~20.04.5k1_arm64.deb

http://archive.kylinos.cn/kylin/KYLIN-ALL/pool/main/a/accountsservice/libaccountsservice-doc_0.6.55-0kylin12~20.04.5k1_all.deb

http://archive.kylinos.cn/kylin/KYLIN-ALL/pool/main/a/accountsservice/libaccountsservice0_0.6.55-0kylin12~20.04.5k1_arm64.deb

mips64el软件包下载地址

http://archive.kylinos.cn/kylin/KYLIN-ALL/pool/main/a/accountsservice/accountsservice_0.6.55-0kylin12~20.04.5k1_mips64el.deb

http://archive.kylinos.cn/kylin/KYLIN-ALL/pool/main/a/accountsservice/gir1.2-accountsservice-1.0_0.6.55-0kylin12~20.04.5k1_mips64el.deb

http://archive.kylinos.cn/kylin/KYLIN-ALL/pool/main/a/accountsservice/libaccountsservice-dev_0.6.55-0kylin12~20.04.5k1_mips64el.deb

http://archive.kylinos.cn/kylin/KYLIN-ALL/pool/main/a/accountsservice/libaccountsservice-doc_0.6.55-0kylin12~20.04.5k1_all.deb

http://archive.kylinos.cn/kylin/KYLIN-ALL/pool/main/a/accountsservice/libaccountsservice0_0.6.55-0kylin12~20.04.5k1_mips64el.deb