Fedora 27: FEDORA-2017-1682a6a2a0 Moderate DNS Crash Fix

Qt is a software toolkit for developing applications.

This package contains base tools, like string, xml, and network

handling.

Security fix for QDnsLookup crash on unix when DNS response is over 512 bytes,

see also https://qt-project.atlassian.net//browse/QTBUG-64742

[ 1 ] Bug #1518958 - qt5-qtbase: qt: Out of bounds read in QDnsLookup in src/network/kernel/qdnslookup_unix.cpp [fedora-all]

https://bugzilla.redhat.com/show_bug.cgi?id=1518958

su -c 'dnf upgrade qt5-qtbase' at the command line.

For more information, refer to the dnf documentation available at

https://dnf.readthedocs.io/en/latest/command_ref.html

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