The net_checksum_calculate function in net/checksum.c in QEMU allows local guest OS users to cause a denial of service (out-of-bounds heap read and crash) via the payload length in a crafted packet.
https://lists.debian.org/debian-lts-announce/2018/11/msg00038.html
http://www.ubuntu.com/usn/USN-2974-1
http://www.securityfocus.com/bid/84130
http://www.openwall.com/lists/oss-security/2016/03/07/3
http://www.openwall.com/lists/oss-security/2016/03/03/9
http://rhn.redhat.com/errata/RHSA-2017-0350.html
http://rhn.redhat.com/errata/RHSA-2017-0344.html
http://rhn.redhat.com/errata/RHSA-2017-0334.html
http://rhn.redhat.com/errata/RHSA-2017-0309.html
http://rhn.redhat.com/errata/RHSA-2017-0083.html
http://rhn.redhat.com/errata/RHSA-2016-2706.html
http://rhn.redhat.com/errata/RHSA-2016-2705.html
http://rhn.redhat.com/errata/RHSA-2016-2704.html
http://rhn.redhat.com/errata/RHSA-2016-2671.html
http://rhn.redhat.com/errata/RHSA-2016-2670.html
http://git.qemu.org/?p=qemu.git%3Ba=commitdiff%3Bh=362786f14a753d8a5256ef97d7c10ed576d6572b