tcp_emu in slirp/tcp_subr.c (aka slirp/src/tcp_subr.c) in QEMU 3.0.0 uses uninitialized data in an snprintf call, leading to Information disclosure.
https://lists.gnu.org/archive/html/qemu-devel/2019-03/msg00400.html
https://access.redhat.com/errata/RHSA-2019:3345
https://access.redhat.com/errata/RHSA-2019:2553
https://access.redhat.com/errata/RHSA-2019:2425