1. 修复的CVE

CVE-2021-20240

gdk-pixbuf是一款图像加载库。GDK-PixBuf 存在数字错误漏洞，攻击者可利用该漏洞可以触发一个整数溢出，导致拒绝服务，并可能运行代码

2. 受影响的操作系统及软件包

·银河麒麟桌面操作系统V10 SP1

x86_64 架构：

gir1.2-gdkpixbuf-2.0、libgdk-pixbuf2.0-0、libgdk-pixbuf2.0-bin、libgdk-pixbuf2.0-common

arm64 架构：

gir1.2-gdkpixbuf-2.0、libgdk-pixbuf2.0-0、libgdk-pixbuf2.0-bin、libgdk-pixbuf2.0-common

mips64el 架构：

gir1.2-gdkpixbuf-2.0、libgdk-pixbuf2.0-0、libgdk-pixbuf2.0-bin、libgdk-pixbuf2.0-common

3. 软件包修复版本

·银河麒麟桌面操作系统V10 SP1

2.40.0+dfsg-3kylin0.2

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。

10.0 SP1:

http://archive.cyjm16888.com/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

$sudo apt install libgdk-pixbuf2.0-0

方法二：下载软件包进行升级安装

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升级相关的组件包。

$sudo dpkg -i /Path1/Package1 /Path2/Package2 /Path3/Package3……

注：Path 指软件包下载到本地的路径，Package指下载的软件包名称，多个软件包则以空格分开。

5. 软件包下载地址

银河麒麟桌面操作系统V10 SP1

x86_64软件包下载地址

http://archive.cyjm16888.com/kylin/KYLIN-ALL/pool/main/g/gdk-pixbuf/gir1.2-gdkpixbuf-2.0_2.40.0%2Bdfsg-3kylin0.2_amd64.deb

http://archive.cyjm16888.com/kylin/KYLIN-ALL/pool/main/g/gdk-pixbuf/libgdk-pixbuf2.0-0_2.40.0%2Bdfsg-3kylin0.2_amd64.deb

http://archive.cyjm16888.com/kylin/KYLIN-ALL/pool/main/g/gdk-pixbuf/libgdk-pixbuf2.0-bin_2.40.0%2Bdfsg-3kylin0.2_amd64.deb

http://archive.cyjm16888.com/kylin/KYLIN-ALL/pool/main/g/gdk-pixbuf/libgdk-pixbuf2.0-common_2.40.0%2Bdfsg-3kylin0.2_all.deb

arm64软件包下载地址

http://archive.cyjm16888.com/kylin/KYLIN-ALL/pool/main/g/gdk-pixbuf/gir1.2-gdkpixbuf-2.0_2.40.0%2Bdfsg-3kylin0.2_arm64.deb

http://archive.cyjm16888.com/kylin/KYLIN-ALL/pool/main/g/gdk-pixbuf/libgdk-pixbuf2.0-0_2.40.0%2Bdfsg-3kylin0.2_arm64.deb

http://archive.cyjm16888.com/kylin/KYLIN-ALL/pool/main/g/gdk-pixbuf/libgdk-pixbuf2.0-bin_2.40.0%2Bdfsg-3kylin0.2_arm64.deb

http://archive.cyjm16888.com/kylin/KYLIN-ALL/pool/main/g/gdk-pixbuf/libgdk-pixbuf2.0-common_2.40.0%2Bdfsg-3kylin0.2_all.deb

mips64el软件包下载地址

http://archive.cyjm16888.com/kylin/KYLIN-ALL/pool/main/g/gdk-pixbuf/gir1.2-gdkpixbuf-2.0_2.40.0%2Bdfsg-3kylin0.2_mips64el.deb

http://archive.cyjm16888.com/kylin/KYLIN-ALL/pool/main/g/gdk-pixbuf/libgdk-pixbuf2.0-0_2.40.0%2Bdfsg-3kylin0.2_mips64el.deb

http://archive.cyjm16888.com/kylin/KYLIN-ALL/pool/main/g/gdk-pixbuf/libgdk-pixbuf2.0-bin_2.40.0%2Bdfsg-3kylin0.2_mips64el.deb

http://archive.cyjm16888.com/kylin/KYLIN-ALL/pool/main/g/gdk-pixbuf/libgdk-pixbuf2.0-common_2.40.0%2Bdfsg-3kylin0.2_all.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与修复版本一致则成功修复。

$sudo dpkg -l |grep Package

注：Package为软件包包名。