An issue was discovered in Qt before 5.11.3. QBmpHandler has a buffer overflow via BMP data.
https://www.debian.org/security/2019/dsa-4374
https://usn.ubuntu.com/4003-1/
https://lists.debian.org/debian-lts-announce/2020/09/msg00023.html
https://lists.debian.org/debian-lts-announce/2019/05/msg00014.html
https://lists.debian.org/debian-lts-announce/2019/01/msg00004.html
https://codereview.qt-project.org/#/c/238749/
https://blog.qt.io/blog/2018/12/04/qt-5-11-3-released-important-security-updates/
https://access.redhat.com/errata/RHSA-2019:3390
https://access.redhat.com/errata/RHSA-2019:2135
http://lists.opensuse.org/opensuse-security-announce/2020-09/msg00090.html
http://lists.opensuse.org/opensuse-security-announce/2020-09/msg00073.html
http://lists.opensuse.org/opensuse-security-announce/2020-09/msg00071.html
http://lists.opensuse.org/opensuse-security-announce/2020-09/msg00057.html
http://lists.opensuse.org/opensuse-security-announce/2018-12/msg00066.html