Debian has issued an advisory on January 28: https://www.debian.org/security/2019/dsa-4374 We fixed the other two issues in Bug 24081.
Upstream advisory: http://blog.qt.io/blog/2018/12/04/qt-5-11-3-released-important-security-updates/ Fedora reference: https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/thread/LYVHBTI6QIIQFFV3CJI3LLKUV5XFE3AF/
SUSE has issued an advisory on April 10: http://lists.suse.com/pipermail/sle-security-updates/2019-April/005321.html It includes a fix for CVE-2018-19872, also from 5.11.3.
Summary: qtbase5 new security issue CVE-2018-19870 => qtbase5 new security issue CVE-2018-19870 and CVE-2018-19872
openSUSE has issued an advisory for this on April 18: https://lists.opensuse.org/opensuse-updates/2019-04/msg00152.html
Mageia 6 is EOL.
Status: NEW => RESOLVEDResolution: (none) => OLD