“apt update”后,Ubuntu 景观升级不可用

“apt update”后,Ubuntu 景观升级不可用

今天早上我收到了来自 Ubuntu Landscape 的以下电子邮件:

The following security upgrades are available:

Package                        Version              USN
-------------------------------------------------------------------
libapache2-mod-php7.2          7.2.24-0ubuntu0.18.0 USN-4239-1
php7.2-cli                     7.2.24-0ubuntu0.18.0 USN-4239-1
php7.2-common                  7.2.24-0ubuntu0.18.0 USN-4239-1
php7.2-dev                     7.2.24-0ubuntu0.18.0 USN-4239-1
php7.2-gd                      7.2.24-0ubuntu0.18.0 USN-4239-1
php7.2-json                    7.2.24-0ubuntu0.18.0 USN-4239-1
php7.2-mbstring                7.2.24-0ubuntu0.18.0 USN-4239-1
php7.2-mysql                   7.2.24-0ubuntu0.18.0 USN-4239-1
php7.2-opcache                 7.2.24-0ubuntu0.18.0 USN-4239-1
php7.2-readline                7.2.24-0ubuntu0.18.0 USN-4239-1
php7.2-xml                     7.2.24-0ubuntu0.18.0 USN-4239-1

但在 VPS 上(使用 Ubuntu 18.04.3 LTS)其中安装了 Ubuntu Landscape,执行完后apt update,我收到了消息All packages are up to date

完整的输出是:

# apt update
Hit:1 http://security.ubuntu.com/ubuntu bionic-security InRelease
Hit:2 http://it.archive.ubuntu.com/ubuntu bionic InRelease
Hit:3 http://it.archive.ubuntu.com/ubuntu bionic-updates InRelease
Hit:4 http://it.archive.ubuntu.com/ubuntu bionic-backports InRelease
Reading package lists... Done                     
Building dependency tree       
Reading state information... Done
All packages are up to date.

apt-cache show php7.2-cli报告称,安装的版本是7.2.3-1ubuntu1,确认此软件包没有更新至7.2.24

您认为有什么解释吗?谢谢

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