In QEMU 5.0.0 and earlier, megasas_lookup_frame in hw/scsi/megasas.c has an out-of-bounds read via a crafted reply_queue_head field from a guest OS user.
https://www.debian.org/security/2020/dsa-4728
https://usn.ubuntu.com/4467-1/
https://security.netapp.com/advisory/ntap-20200608-0003/
https://security.gentoo.org/glsa/202011-09
https://security-tracker.debian.org/tracker/CVE-2020-13362
https://lists.gnu.org/archive/html/qemu-devel/2020-05/msg06250.html
https://lists.gnu.org/archive/html/qemu-devel/2020-05/msg03131.html
https://lists.debian.org/debian-lts-announce/2020/07/msg00020.html
https://lists.debian.org/debian-lts-announce/2020/06/msg00032.html
http://www.openwall.com/lists/oss-security/2020/05/28/2
http://lists.opensuse.org/opensuse-security-announce/2020-07/msg00086.html