Memory leak in hw/audio/es1370.c in QEMU (aka Quick Emulator) allows local guest OS privileged users to cause a denial of service (host memory consumption and QEMU process crash) via a large number of device unplug operations.
https://lists.debian.org/debian-lts-announce/2018/09/msg00007.html
http://www.securityfocus.com/bid/95669
http://www.openwall.com/lists/oss-security/2017/01/18/8
http://www.openwall.com/lists/oss-security/2017/01/18/1
http://git.qemu-project.org/?p=qemu.git%3Ba=commit%3Bh=069eb7b2b8fc47c7cb52e5a4af23ea98d939e3da