The eepro100 emulator in QEMU qemu-kvm blank allows local guest users to cause a denial of service (application crash and infinite loop) via vectors involving the command block list.
https://lists.gnu.org/archive/html/qemu-devel/2015-10/msg03911.html
https://security.gentoo.org/glsa/201602-01
http://www.debian.org/security/2016/dsa-3469
http://www.debian.org/security/2016/dsa-3470