1.修復(fù)的CVE ·CVE-2022-2526 描述：該漏洞源于resolved-dns-stream.c 中的 on_stream_io() 函數(shù)和 dns_stream_complete() 函數(shù)未增加 DnsStream 對(duì)象的引用計(jì)數(shù)，調(diào)用的其他函數(shù)和回調(diào)可以取消對(duì)DNSStream對(duì)象的引用，從而導(dǎo)致在以后仍然使用引用時(shí)會(huì)出現(xiàn)釋放后重用問(wèn)題。 2.受影響的軟件包 ·中標(biāo)麒麟高級(jí)服務(wù)器操作系統(tǒng) V7 ·aarch64架構(gòu): libgudev1、libgudev1-devel、systemd、systemd-devel、systemd-journal-gateway、systemd-libs、systemd-networkd、systemd-python、systemd-resolved、systemd-sysv ·x86_64架構(gòu): libgudev1、libgudev1-devel、systemd、systemd-devel、systemd-journal-gateway、systemd-libs、systemd-networkd、systemd-python、systemd-resolved、systemd-sysv 3.軟件包修復(fù)版本 ·中標(biāo)麒麟高級(jí)服務(wù)器操作系統(tǒng) V7 (aarch64、x86_64) libgudev1-219-78.el7_9.7或以上版本 libgudev1-devel-219-78.el7_9.7或以上版本 systemd-219-78.el7_9.7或以上版本 systemd-devel-219-78.el7_9.7或以上版本 systemd-journal-gateway-219-78.el7_9.7或以上版本 systemd-libs-219-78.el7_9.7或以上版本 systemd-networkd-219-78.el7_9.7或以上版本 systemd-python-219-78.el7_9.7或以上版本 systemd-resolved-219-78.el7_9.7或以上版本 systemd-sysv-219-78.el7_9.7或以上版本 4.修復(fù)方法 方法一：配置源進(jìn)行升級(jí)安裝 1.打開(kāi)軟件包源配置文件，根據(jù)倉(cāng)庫(kù)地址進(jìn)行修改。 倉(cāng)庫(kù)源地址： 中標(biāo)麒麟高級(jí)服務(wù)器操作系統(tǒng) V7 aarch64:https://update.cs2c.com.cn/NS/V7/V7Update9/os/adv/lic/updates/aarch64/ x86_64:https://update.cs2c.com.cn/NS/V7/V7Update9/os/adv/lic/updates/x86_64/ 2.配置完成后執(zhí)行更新命令進(jìn)行升級(jí)，命令如下： yum update Packagename 方法二：下載安裝包進(jìn)行升級(jí)安裝 通過(guò)軟件包地址下載軟件包，使用軟件包升級(jí)命令根據(jù)受影響的軟件包 列表進(jìn)行升級(jí)安裝, 命令如下： yum install Packagename 3.升級(jí)完成后是否需要重啟服務(wù)或操作系統(tǒng)： CVE-2022-2526:無(wú)需重啟操作系統(tǒng)與服務(wù)即可使漏洞修復(fù)生效。 5.軟件包下載地址 ·中標(biāo)麒麟高級(jí)服務(wù)器操作系統(tǒng) V7 systemd(aarch64)軟件包下載地址: https://update.cs2c.com.cn/NS/V7/V7Update9/os/adv/lic/updates/aarch64/Packages/libgudev1-219-78.el7_9.7.aarch64.rpm https://update.cs2c.com.cn/NS/V7/V7Update9/os/adv/lic/updates/aarch64/Packages/libgudev1-devel-219-78.el7_9.7.aarch64.rpm https://update.cs2c.com.cn/NS/V7/V7Update9/os/adv/lic/updates/aarch64/Packages/systemd-219-78.el7_9.7.aarch64.rpm https://update.cs2c.com.cn/NS/V7/V7Update9/os/adv/lic/updates/aarch64/Packages/systemd-devel-219-78.el7_9.7.aarch64.rpm https://update.cs2c.com.cn/NS/V7/V7Update9/os/adv/lic/updates/aarch64/Packages/systemd-journal-gateway-219-78.el7_9.7.aarch64.rpm https://update.cs2c.com.cn/NS/V7/V7Update9/os/adv/lic/updates/aarch64/Packages/systemd-libs-219-78.el7_9.7.aarch64.rpm https://update.cs2c.com.cn/NS/V7/V7Update9/os/adv/lic/updates/aarch64/Packages/systemd-networkd-219-78.el7_9.7.aarch64.rpm https://update.cs2c.com.cn/NS/V7/V7Update9/os/adv/lic/updates/aarch64/Packages/systemd-python-219-78.el7_9.7.aarch64.rpm https://update.cs2c.com.cn/NS/V7/V7Update9/os/adv/lic/updates/aarch64/Packages/systemd-resolved-219-78.el7_9.7.aarch64.rpm https://update.cs2c.com.cn/NS/V7/V7Update9/os/adv/lic/updates/aarch64/Packages/systemd-sysv-219-78.el7_9.7.aarch64.rpm systemd(x86_64)軟件包下載地址: https://update.cs2c.com.cn/NS/V7/V7Update9/os/adv/lic/updates/x86_64/Packages/libgudev1-219-78.el7_9.7.i686.rpm https://update.cs2c.com.cn/NS/V7/V7Update9/os/adv/lic/updates/x86_64/Packages/libgudev1-219-78.el7_9.7.x86_64.rpm https://update.cs2c.com.cn/NS/V7/V7Update9/os/adv/lic/updates/x86_64/Packages/libgudev1-devel-219-78.el7_9.7.i686.rpm https://update.cs2c.com.cn/NS/V7/V7Update9/os/adv/lic/updates/x86_64/Packages/libgudev1-devel-219-78.el7_9.7.x86_64.rpm https://update.cs2c.com.cn/NS/V7/V7Update9/os/adv/lic/updates/x86_64/Packages/systemd-219-78.el7_9.7.x86_64.rpm https://update.cs2c.com.cn/NS/V7/V7Update9/os/adv/lic/updates/x86_64/Packages/systemd-devel-219-78.el7_9.7.i686.rpm https://update.cs2c.com.cn/NS/V7/V7Update9/os/adv/lic/updates/x86_64/Packages/systemd-devel-219-78.el7_9.7.x86_64.rpm https://update.cs2c.com.cn/NS/V7/V7Update9/os/adv/lic/updates/x86_64/Packages/systemd-journal-gateway-219-78.el7_9.7.x86_64.rpm https://update.cs2c.com.cn/NS/V7/V7Update9/os/adv/lic/updates/x86_64/Packages/systemd-libs-219-78.el7_9.7.i686.rpm https://update.cs2c.com.cn/NS/V7/V7Update9/os/adv/lic/updates/x86_64/Packages/systemd-libs-219-78.el7_9.7.x86_64.rpm https://update.cs2c.com.cn/NS/V7/V7Update9/os/adv/lic/updates/x86_64/Packages/systemd-networkd-219-78.el7_9.7.x86_64.rpm https://update.cs2c.com.cn/NS/V7/V7Update9/os/adv/lic/updates/x86_64/Packages/systemd-python-219-78.el7_9.7.x86_64.rpm https://update.cs2c.com.cn/NS/V7/V7Update9/os/adv/lic/updates/x86_64/Packages/systemd-resolved-219-78.el7_9.7.i686.rpm https://update.cs2c.com.cn/NS/V7/V7Update9/os/adv/lic/updates/x86_64/Packages/systemd-resolved-219-78.el7_9.7.x86_64.rpm https://update.cs2c.com.cn/NS/V7/V7Update9/os/adv/lic/updates/x86_64/Packages/systemd-sysv-219-78.el7_9.7.x86_64.rpm 注：其他相關(guān)依賴包請(qǐng)到相同目錄下載 6.修復(fù)驗(yàn)證 使用軟件包查詢命令，查看相關(guān)軟件包版本是否與修復(fù)版本一致，如果版本一致，則說(shuō)明修復(fù)成功。 sudo rpm -qa | grep Packagename