qemu is vulnerable to denial of service. Mishandling of the seccomp policy for threads other than the main thread allows local OS guest users to crash the application.
www.openwall.com/lists/oss-security/2018/08/28/6
access.redhat.com/errata/RHSA-2019:2425
access.redhat.com/security/updates/classification/#important
bugzilla.redhat.com/show_bug.cgi?id=1728358
bugzilla.redhat.com/show_bug.cgi?id=1728359
bugzilla.redhat.com/show_bug.cgi?id=1728360
lists.gnu.org/archive/html/qemu-devel/2018-08/msg04892.html