Security update for qemu

Open Source Vulnerabilities SUSE-SU-2021:2591-1

This update for qemu fixes the following issues: Security issues fixed: - CVE-2021-3595: Fixed slirp: invalid pointer initialization may lead to information disclosure (tftp) (bsc#1187366) - CVE-2021-3592: Fix for slirp: invalid pointer initialization may lead to information disclosure (bootp) (bsc#1187364) - CVE-2021-3594: Fix for slirp: invalid pointer initialization may lead to information disclosure (udp) (bsc#1187367) - CVE-2021-3593: Fix for slirp: invalid pointer initialization may lead to information disclosure (udp6) (bsc#1187365) - CVE-2021-3582: Fix possible mremap overflow in the pvrdma (bsc#1187499) - CVE-2021-3607: Ensure correct input on ring init (bsc#1187539) - CVE-2021-3608: Fix the ring init error flow (bsc#1187538) - CVE-2021-3611: Fix intel-hda segmentation fault due to stack overflow (bsc#1187529) - CVE-2020-25085: Fix out-of-bounds access issue while doing multi block SDMA (bsc#1176681) Other issues fixed: - QEMU BIOS fails to read stage2 loader (on s390x)(bsc#1186290) - Fix qemu hang while cancelling migrating hugepage vm (bsc#1185591)