Security fix for DB_CONFIG parsing when db_home is not set.
Please be aware that this update is expected to cause DB_VERSION_MISMATCH errors during installation if you are still running an older release of libdb. These errors are a result of packages calling rpm commands during installation and have so far been found harmless.
You can also run into issues with dnf plugins that do the same. As these plugins are run after the rpm transaction has already gone through successfully they should also be harmless. However, in this case a rebuild of rpmdb's environment will be needed. Detailed information on how to achieve this can be found in the links below.
For more information please take a look at:
sudo dnf upgrade --advisory=FEDORA-2017-2b68e14594
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