address_space_map in exec.c in QEMU 4.2.0 can trigger a NULL pointer dereference related to BounceBuffer.
lists.opensuse.org/opensuse-security-announce/2020-07/msg00086.html
www.openwall.com/lists/oss-security/2020/06/01/3
lists.debian.org/debian-lts-announce/2020/07/msg00020.html
lists.gnu.org/archive/html/qemu-devel/2020-05/msg07313.html
security.gentoo.org/glsa/202011-09
security.netapp.com/advisory/ntap-20200608-0007/
usn.ubuntu.com/4467-1/
www.debian.org/security/2020/dsa-4728