Memory leak in QEMU (aka Quick Emulator), when built with USB EHCI Emulation support, allows local guest OS privileged users to cause a denial of service (memory consumption) by repeatedly hot-unplugging the device.
git.qemu.org/?p=qemu.git%3Ba=commit%3Bh=d710e1e7bd3d5bfc26b631f02ae87901ebe646b0
www.debian.org/security/2017/dsa-3920
www.openwall.com/lists/oss-security/2017/06/06/3
www.securityfocus.com/bid/98905
access.redhat.com/errata/RHSA-2017:2392
access.redhat.com/errata/RHSA-2017:2408
bugzilla.redhat.com/show_bug.cgi?id=1459132
lists.debian.org/debian-lts-announce/2018/09/msg00007.html