Memory leak in hw/net/eepro100.c in QEMU (aka Quick Emulator) allows local guest OS administrators to cause a denial of service (memory consumption and QEMU process crash) by repeatedly unplugging an i8255x (PRO100) NIC device.
https://security.gentoo.org/glsa/201701-49
https://lists.gnu.org/archive/html/qemu-devel/2016-10/msg03024.html
https://lists.debian.org/debian-lts-announce/2018/11/msg00038.html
http://www.securityfocus.com/bid/93957
http://www.openwall.com/lists/oss-security/2016/10/30/5
http://www.openwall.com/lists/oss-security/2016/10/27/14
http://lists.opensuse.org/opensuse-updates/2016-12/msg00140.html