The rc4030_write function in hw/dma/rc4030.c in QEMU (aka Quick Emulator) allows local guest OS administrators to cause a denial of service (divide-by-zero error and QEMU process crash) via a large interval timer reload value.
https://lists.gnu.org/archive/html/qemu-devel/2016-10/msg02577.html
https://lists.debian.org/debian-lts-announce/2018/09/msg00007.html
http://www.securityfocus.com/bid/93567
http://www.openwall.com/lists/oss-security/2016/10/15/4
http://www.openwall.com/lists/oss-security/2016/10/14/6
http://lists.opensuse.org/opensuse-updates/2016-12/msg00140.html