CVE-2018-1000030 : on s390x python2.7-2.7.15~rc1-1ubuntu0.1

When checked python2.7-2.7.15~rc1-1ubuntu0.1 on `ubuntu:latest` image on s390x platform, python version is still showing as `2.7.15-4ubuntu4~18.04` for few libraries. Looks like it does not contain the Security fix ` CVE-2018-1000030` on the whole.
For e.g.

docker run --rm --entrypoint /bin/sh s390x/ubuntu:latest -c "apt-get update; apt-get dist-upgrade; dpkg-reconfigure unattended-upgrades ;apt install python python-pip -y; dpkg -l | grep -i python"

....
Running hooks in /etc/ca-certificates/update.d...
done.
ii libpython-all-dev:s390x 2.7.15~rc1-1 s390x package depending on all supported Python development packages
ii libpython-dev:s390x 2.7.15~rc1-1 s390x header files and a static library for Python (default)
ii libpython-stdlib:s390x 2.7.15~rc1-1 s390x interactive high-level object-oriented language (default python version)
ii libpython2.7:s390x 2.7.15-4ubuntu4~18.04 s390x Shared Python runtime library (version 2.7)
ii libpython2.7-dev:s390x 2.7.15-4ubuntu4~18.04 s390x Header files and a static library for Python (v2.7)
ii libpython2.7-minimal:s390x 2.7.15-4ubuntu4~18.04 s390x Minimal subset of the Python language (version 2.7)
ii libpython2.7-stdlib:s390x 2.7.15-4ubuntu4~18.04 s390x Interactive high-level object-oriented language (standard library, version 2.7)
ii python 2.7.15~rc1-1 s390x interactive high-level object-oriented language (default version)
ii python-all 2.7.15~rc1-1 s390x package depending on all supported Python runtime versions
ii python-all-dev 2.7.15~rc1-1 s390x package depending on all supported Python development packages
ii python-asn1crypto 0.24.0-1 all Fast ASN.1 parser and serializer (Python 2)
ii python-cffi-backend 1.11.5-1 s390x Foreign Function Interface for Python calling C code - backend
ii python-crypto 2.6.1-8ubuntu2 s390x cryptographic algorithms and protocols for Python
ii python-cryptography 2.1.4-1ubuntu1.3 s390x Python library exposing cryptographic recipes and primitives (Python 2)
ii python-dbus 1.2.6-1 s390x simple interprocess messaging system (Python interface)
ii python-dev 2.7.15~rc1-1 s390x header files and a static library for Python (default)
ii python-enum34 1.1.6-2 all backport of Python 3.4's enum package
ii python-gi 3.26.1-2ubuntu1 s390x Python 2.x bindings for gobject-introspection libraries
ii python-idna 2.6-1 all Python IDNA2008 (RFC 5891) handling (Python 2)
ii python-ipaddress 1.0.17-1 all Backport of Python 3 ipaddress module (Python 2)
ii python-keyring 10.6.0-1 all store and access your passwords safely
ii python-keyrings.alt 3.0-1 all alternate backend implementations for python-keyring
ii python-minimal 2.7.15~rc1-1 s390x minimal subset of the Python language (default version)
ii python-pip 9.0.1-2.3~ubuntu1.18.04.1 all Python package installer
ii python-pip-whl 9.0.1-2.3~ubuntu1.18.04.1 all Python package installer
ii python-pkg-resources 39.0.1-2 all Package Discovery and Resource Access using pkg_resources
ii python-secretstorage 2.3.1-2 all Python module for storing secrets - Python 2.x version
ii python-setuptools 39.0.1-2 all Python Distutils Enhancements
ii python-six 1.11.0-2 all Python 2 and 3 compatibility library (Python 2 interface)
ii python-wheel 0.30.0-0.2 all built-package format for Python
ii python-xdg 0.25-4ubuntu1 all Python 2 library to access freedesktop.org standards
ii python2.7 2.7.15-4ubuntu4~18.04 s390x Interactive high-level object-oriented language (version 2.7)
ii python2.7-dev 2.7.15-4ubuntu4~18.04 s390x Header files and a static library for Python (v2.7)
ii python2.7-minimal 2.7.15-4ubuntu4~18.04 s390x Minimal subset of the Python language (version 2.7)

Could anyone please let us know if we are missing steps? Do we need to add few more repos and all?