libslirp 4.0.0, as used in QEMU 4.1.0, has a use-after-free in ip_reass in ip_input.c.
lists.opensuse.org/opensuse-security-announce/2019-11/msg00034.html
www.openwall.com/lists/oss-security/2019/09/06/3
access.redhat.com/errata/RHSA-2020:0775
gitlab.freedesktop.org/slirp/libslirp/commit/c5927943
lists.debian.org/debian-lts-announce/2019/09/msg00021.html
seclists.org/bugtraq/2020/Feb/0
usn.ubuntu.com/4191-1/
usn.ubuntu.com/4191-2/
www.debian.org/security/2020/dsa-4616