1.修復的CVE

    CVE-2021-3939

    Canonical Ubuntu是英國科能（Canonical）公司的一套以桌面應用為主的GNU/Linux操作系統。Canonical Ubuntu 存在安全漏洞，該漏洞源于 Ubuntu 對accountsservice 的特定修改導致在user_change_language_authorized_cb 函數中指向靜態存儲的fallback_locale 變量被釋放。

2.影響的操作系統

    銀河麒麟桌面操作系統V10 SP1

3.修復版本

    軟件包：accountsservice

    0.6.55-0kylin12~20.04.5k1(V10 SP1)

4.受影響的軟件包

    ·銀河麒麟桌面操作系統V10 SP1

    accountsservice

    gir1.2-accountsservice-1.0

    libaccountsservice-dev

    libaccountsservice-doc

    libaccountsservice0

5.修復方法

方法一：配置源進行升級安裝

    打開軟件包源配置文件，根據倉庫地址進行修改。

    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

    配置完成后執行更新命令進行升級

    $sudo apt update

方法二：下載安裝包進行升級安裝

    通過軟件包地址下載軟件包，使用軟件包升級命令根據受影響的組件包列表 升級相關的組件包。

    $dpkg -i Packagelists

6.軟件包下載地址

銀河麒麟操作系統桌面版V10 SP1

X86_64軟件包下載地址

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軟件包下載地址

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軟件包下載地址

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