1. 修复的CVE CVE-2021-20254 Samba是Samba团队的一套可使UNIX系列的操作系统与微软Windows操作系统的SMB/CIFS网络协议做连结的自由软件。该软件支持共享打印机、互相传输资料文件等。Samba 存在缓冲区错误漏洞，该漏洞源于在将Windows组标识(sid)映射到unix组标识(gid)时存在边界条件，这导致在Samba服务器进程令牌中创建负面的idmap缓存项。 2. 受影响的操作系统及软件包 ·银河麒麟桌面操作系统V10 x86_64 架构： ctdb、libnss-winbind、libpam-winbind、libparse-pidl-perl、libsmbclient、libwbclient0、python-samba、registry-tools、samba-common-bin、samba-common、samba-dsdb-modules、samba-libs、samba-testsuite、samba-vfs-modules、samba、smbclient、winbind arm64 架构： ctdb、libnss-winbind、libpam-winbind、libparse-pidl-perl、libsmbclient、libwbclient0、python-samba、registry-tools、samba-common-bin、samba-common、samba-dsdb-modules、samba-libs、samba-testsuite、samba-vfs-modules、samba、smbclient、winbind mips64el 架构： ctdb、libnss-winbind、libpam-winbind、libparse-pidl-perl、libsmbclient、libwbclient0、python-samba、registry-tools、samba-common-bin、samba-common、samba-dsdb-modules、samba-libs、samba-testsuite、samba-vfs-modules、samba、smbclient、winbind 3. 软件包修复版本 ·银河麒麟桌面操作系统V10 2:4.3.11+dfsg-0kord0.16.04.34+esm1 4. 修复方法 方法一：升级安装 执行更新命令进行升级 $sudo apt update $sudo apt install samba 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 x86_64软件包下载地址 http://archive.kylinos.cn/kylin/KYLIN-ALL/pool/main/s/samba/ctdb_4.3.11%2Bdfsg-0kord0.16.04.34%2Besm1_amd64.deb http://archive.kylinos.cn/kylin/KYLIN-ALL/pool/main/s/samba/libnss-winbind_4.3.11%2Bdfsg-0kord0.16.04.34%2Besm1_amd64.deb http://archive.kylinos.cn/kylin/KYLIN-ALL/pool/main/s/samba/libpam-winbind_4.3.11%2Bdfsg-0kord0.16.04.34%2Besm1_amd64.deb http://archive.kylinos.cn/kylin/KYLIN-ALL/pool/main/s/samba/libparse-pidl-perl_4.3.11%2Bdfsg-0kord0.16.04.34%2Besm1_amd64.deb http://archive.kylinos.cn/kylin/KYLIN-ALL/pool/main/s/samba/libsmbclient_4.3.11%2Bdfsg-0kord0.16.04.34%2Besm1_amd64.deb http://archive.kylinos.cn/kylin/KYLIN-ALL/pool/main/s/samba/libwbclient0_4.3.11%2Bdfsg-0kord0.16.04.34%2Besm1_amd64.deb http://archive.kylinos.cn/kylin/KYLIN-ALL/pool/main/s/samba/python-samba_4.3.11%2Bdfsg-0kord0.16.04.34%2Besm1_amd64.deb http://archive.kylinos.cn/kylin/KYLIN-ALL/pool/main/s/samba/registry-tools_4.3.11%2Bdfsg-0kord0.16.04.34%2Besm1_amd64.deb http://archive.kylinos.cn/kylin/KYLIN-ALL/pool/main/s/samba/samba-common-bin_4.3.11%2Bdfsg-0kord0.16.04.34%2Besm1_amd64.deb http://archive.kylinos.cn/kylin/KYLIN-ALL/pool/main/s/samba/samba-common_4.3.11%2Bdfsg-0kord0.16.04.34%2Besm1_all.deb http://archive.kylinos.cn/kylin/KYLIN-ALL/pool/main/s/samba/samba-dsdb-modules_4.3.11%2Bdfsg-0kord0.16.04.34%2Besm1_amd64.deb http://archive.kylinos.cn/kylin/KYLIN-ALL/pool/main/s/samba/samba-libs_4.3.11%2Bdfsg-0kord0.16.04.34%2Besm1_amd64.deb http://archive.kylinos.cn/kylin/KYLIN-ALL/pool/main/s/samba/samba-testsuite_4.3.11%2Bdfsg-0kord0.16.04.34%2Besm1_amd64.deb http://archive.kylinos.cn/kylin/KYLIN-ALL/pool/main/s/samba/samba-vfs-modules_4.3.11%2Bdfsg-0kord0.16.04.34%2Besm1_amd64.deb http://archive.kylinos.cn/kylin/KYLIN-ALL/pool/main/s/samba/samba_4.3.11%2Bdfsg-0kord0.16.04.34%2Besm1_amd64.deb http://archive.kylinos.cn/kylin/KYLIN-ALL/pool/main/s/samba/smbclient_4.3.11%2Bdfsg-0kord0.16.04.34%2Besm1_amd64.deb http://archive.kylinos.cn/kylin/KYLIN-ALL/pool/main/s/samba/winbind_4.3.11%2Bdfsg-0kord0.16.04.34%2Besm1_amd64.deb arm64软件包下载地址 http://archive.kylinos.cn/kylin/KYLIN-ALL/pool/main/s/samba/ctdb_4.3.11%2Bdfsg-0kord0.16.04.34%2Besm1_arm64.deb http://archive.kylinos.cn/kylin/KYLIN-ALL/pool/main/s/samba/libnss-winbind_4.3.11%2Bdfsg-0kord0.16.04.34%2Besm1_arm64.deb http://archive.kylinos.cn/kylin/KYLIN-ALL/pool/main/s/samba/libpam-winbind_4.3.11%2Bdfsg-0kord0.16.04.34%2Besm1_arm64.deb http://archive.kylinos.cn/kylin/KYLIN-ALL/pool/main/s/samba/libparse-pidl-perl_4.3.11%2Bdfsg-0kord0.16.04.34%2Besm1_arm64.deb http://archive.kylinos.cn/kylin/KYLIN-ALL/pool/main/s/samba/libsmbclient_4.3.11%2Bdfsg-0kord0.16.04.34%2Besm1_arm64.deb http://archive.kylinos.cn/kylin/KYLIN-ALL/pool/main/s/samba/libwbclient0_4.3.11%2Bdfsg-0kord0.16.04.34%2Besm1_arm64.deb http://archive.kylinos.cn/kylin/KYLIN-ALL/pool/main/s/samba/python-samba_4.3.11%2Bdfsg-0kord0.16.04.34%2Besm1_arm64.deb http://archive.kylinos.cn/kylin/KYLIN-ALL/pool/main/s/samba/registry-tools_4.3.11%2Bdfsg-0kord0.16.04.34%2Besm1_arm64.deb http://archive.kylinos.cn/kylin/KYLIN-ALL/pool/main/s/samba/samba-common-bin_4.3.11%2Bdfsg-0kord0.16.04.34%2Besm1_arm64.deb http://archive.kylinos.cn/kylin/KYLIN-ALL/pool/main/s/samba/samba-common_4.3.11%2Bdfsg-0kord0.16.04.34%2Besm1_all.deb http://archive.kylinos.cn/kylin/KYLIN-ALL/pool/main/s/samba/samba-dsdb-modules_4.3.11%2Bdfsg-0kord0.16.04.34%2Besm1_arm64.deb http://archive.kylinos.cn/kylin/KYLIN-ALL/pool/main/s/samba/samba-libs_4.3.11%2Bdfsg-0kord0.16.04.34%2Besm1_arm64.deb http://archive.kylinos.cn/kylin/KYLIN-ALL/pool/main/s/samba/samba-testsuite_4.3.11%2Bdfsg-0kord0.16.04.34%2Besm1_arm64.deb http://archive.kylinos.cn/kylin/KYLIN-ALL/pool/main/s/samba/samba-vfs-modules_4.3.11%2Bdfsg-0kord0.16.04.34%2Besm1_arm64.deb http://archive.kylinos.cn/kylin/KYLIN-ALL/pool/main/s/samba/samba_4.3.11%2Bdfsg-0kord0.16.04.34%2Besm1_arm64.deb http://archive.kylinos.cn/kylin/KYLIN-ALL/pool/main/s/samba/smbclient_4.3.11%2Bdfsg-0kord0.16.04.34%2Besm1_arm64.deb http://archive.kylinos.cn/kylin/KYLIN-ALL/pool/main/s/samba/winbind_4.3.11%2Bdfsg-0kord0.16.04.34%2Besm1_arm64.deb mips64el软件包下载地址 http://archive.kylinos.cn/kylin/KYLIN-ALL/pool/main/s/samba/ctdb_4.3.11%2Bdfsg-0kord0.16.04.34%2Besm1_mips64el.deb http://archive.kylinos.cn/kylin/KYLIN-ALL/pool/main/s/samba/libnss-winbind_4.3.11%2Bdfsg-0kord0.16.04.34%2Besm1_mips64el.deb http://archive.kylinos.cn/kylin/KYLIN-ALL/pool/main/s/samba/libpam-winbind_4.3.11%2Bdfsg-0kord0.16.04.34%2Besm1_mips64el.deb http://archive.kylinos.cn/kylin/KYLIN-ALL/pool/main/s/samba/libparse-pidl-perl_4.3.11%2Bdfsg-0kord0.16.04.34%2Besm1_mips64el.deb http://archive.kylinos.cn/kylin/KYLIN-ALL/pool/main/s/samba/libsmbclient_4.3.11%2Bdfsg-0kord0.16.04.34%2Besm1_mips64el.deb http://archive.kylinos.cn/kylin/KYLIN-ALL/pool/main/s/samba/libwbclient0_4.3.11%2Bdfsg-0kord0.16.04.34%2Besm1_mips64el.deb http://archive.kylinos.cn/kylin/KYLIN-ALL/pool/main/s/samba/python-samba_4.3.11%2Bdfsg-0kord0.16.04.34%2Besm1_mips64el.deb http://archive.kylinos.cn/kylin/KYLIN-ALL/pool/main/s/samba/registry-tools_4.3.11%2Bdfsg-0kord0.16.04.34%2Besm1_mips64el.deb http://archive.kylinos.cn/kylin/KYLIN-ALL/pool/main/s/samba/samba-common-bin_4.3.11%2Bdfsg-0kord0.16.04.34%2Besm1_mips64el.deb http://archive.kylinos.cn/kylin/KYLIN-ALL/pool/main/s/samba/samba-common_4.3.11%2Bdfsg-0kord0.16.04.34%2Besm1_all.deb http://archive.kylinos.cn/kylin/KYLIN-ALL/pool/main/s/samba/samba-dsdb-modules_4.3.11%2Bdfsg-0kord0.16.04.34%2Besm1_mips64el.deb http://archive.kylinos.cn/kylin/KYLIN-ALL/pool/main/s/samba/samba-libs_4.3.11%2Bdfsg-0kord0.16.04.34%2Besm1_mips64el.deb http://archive.kylinos.cn/kylin/KYLIN-ALL/pool/main/s/samba/samba-testsuite_4.3.11%2Bdfsg-0kord0.16.04.34%2Besm1_mips64el.deb http://archive.kylinos.cn/kylin/KYLIN-ALL/pool/main/s/samba/samba-vfs-modules_4.3.11%2Bdfsg-0kord0.16.04.34%2Besm1_mips64el.deb http://archive.kylinos.cn/kylin/KYLIN-ALL/pool/main/s/samba/samba_4.3.11%2Bdfsg-0kord0.16.04.34%2Besm1_mips64el.deb http://archive.kylinos.cn/kylin/KYLIN-ALL/pool/main/s/samba/smbclient_4.3.11%2Bdfsg-0kord0.16.04.34%2Besm1_mips64el.deb http://archive.kylinos.cn/kylin/KYLIN-ALL/pool/main/s/samba/winbind_4.3.11%2Bdfsg-0kord0.16.04.34%2Besm1_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。