The Network Block Device (NBD) server in Quick Emulator (QEMU) before 2.11 is vulnerable to a denial of service issue. It could occur if a client sent large option requests, making the server waste CPU time on reading up to 4GB per request. A client could use this flaw to keep the NBD server from serving other requests, resulting in DoS.
www.openwall.com/lists/oss-security/2017/11/28/9
www.securityfocus.com/bid/102011
access.redhat.com/errata/RHSA-2018:1104
access.redhat.com/errata/RHSA-2018:1113
bugzilla.redhat.com/show_bug.cgi?id=CVE-2017-15119
lists.gnu.org/archive/html/qemu-devel/2017-11/msg05044.html
usn.ubuntu.com/3575-1/
www.debian.org/security/2018/dsa-4213