The get_cmd function in hw/scsi/esp.c in QEMU might allow local guest OS administrators to cause a denial of service (out-of-bounds write and QEMU process crash) via vectors related to reading from the information transfer buffer in non-DMA mode.
www.openwall.com/lists/oss-security/2016/06/02/2
www.openwall.com/lists/oss-security/2016/06/02/9
www.securityfocus.com/bid/90995
www.ubuntu.com/usn/USN-3047-1
www.ubuntu.com/usn/USN-3047-2
bugzilla.redhat.com/show_bug.cgi?id=1341931
lists.debian.org/debian-lts-announce/2018/11/msg00038.html
lists.gnu.org/archive/html/qemu-devel/2016-05/msg05691.html
lists.gnu.org/archive/html/qemu-devel/2016-06/msg00150.html
security.gentoo.org/glsa/201609-01