Stack-based buffer overflow in hw/usb/redirect.c in QEMU (aka Quick Emulator) allows local guest OS users to cause a denial of service (QEMU process crash) via vectors related to logging debug messages.
https://lists.nongnu.org/archive/html/qemu-devel/2017-05/msg03087.html
https://lists.debian.org/debian-lts-announce/2018/09/msg00007.html
https://bugzilla.redhat.com/show_bug.cgi?id=1468496
http://www.securityfocus.com/bid/99475