1. 修復的CVE CVE-2021-20254 Samba是Samba團隊的一套可使UNIX系列的操作系統與微軟Windows操作系統的SMB/CIFS網絡協議做連結的自由軟件。該軟件支持共享打印機、互相傳輸資料文件等。Samba 存在緩沖區錯誤漏洞，該漏洞源于在將Windows組標識(sid)映射到unix組標識(gid)時存在邊界條件，這導致在Samba服務器進程令牌中創建負面的idmap緩存項。 2. 受影響的操作系統及軟件包 ·銀河麒麟桌面操作系統V10 x86_64 架構： 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 架構： 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 架構： 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. 軟件包修復版本 ·銀河麒麟桌面操作系統V10 2:4.3.11+dfsg-0kord0.16.04.34+esm1 4. 修復方法 方法一：升級安裝 執行更新命令進行升級 $sudo apt update $sudo apt install samba 方法二：下載軟件包進行升級安裝 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軟件包列表升級相關的組件包。 $sudo dpkg -i /Path1/Package1 /Path2/Package2 /Path3/Package3…… 注：Path 指軟件包下載到本地的路徑，Package指下載的軟件包名稱，多個軟件包則以空格分開。 5. 軟件包下載地址 銀河麒麟桌面操作系統V10 x86_64軟件包下載地址 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軟件包下載地址 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軟件包下載地址 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. 修復驗證 使用軟件包查詢命令，查看相關的軟件包版本大于或等于修復版本則成功修復。 $sudo dpkg -l |grep Package 注：Package為軟件包包名。