m_cat in slirp/mbuf.c in Qemu has a heap-based buffer overflow via incoming fragmented datagrams.
www.openwall.com/lists/oss-security/2018/06/07/1
www.securityfocus.com/bid/104400
access.redhat.com/errata/RHSA-2018:2462
access.redhat.com/errata/RHSA-2018:2762
access.redhat.com/errata/RHSA-2018:2822
access.redhat.com/errata/RHSA-2018:2887
access.redhat.com/errata/RHSA-2019:2892
bugzilla.redhat.com/show_bug.cgi?id=1586245
lists.debian.org/debian-lts-announce/2019/05/msg00010.html
lists.gnu.org/archive/html/qemu-devel/2018-06/msg01012.html
seclists.org/bugtraq/2019/May/76
usn.ubuntu.com/3826-1/
www.debian.org/security/2019/dsa-4454
www.zerodayinitiative.com/advisories/ZDI-18-567/