CVE ID:	CVE-2019-12068
Description:	In QEMU 1:4.1-1, 1:2.1+dfsg-12+deb8u6, 1:2.8+dfsg-6+deb9u8, 1:3.1+dfsg-8~deb10u1, 1:3.1+dfsg-8+deb10u2, and 1:2.1+dfsg-12+deb8u12 (fixed), when executing script in lsi_execute_script(), the LSI scsi adapter emulator advances 's->dsp' index to read next opcode. This can lead to an infinite loop if the next opcode is empty. Move the existing loop exit after 10k iterations so that it covers no-op opcodes as well.
Test IDs:	1.3.6.1.4.1.25623.1.0.891927   1.3.6.1.4.1.25623.1.0.892288
Cross References:	Common Vulnerability Exposure (CVE) ID: CVE-2019-12068 Debian Security Information: DSA-4665 (Google Search) https://www.debian.org/security/2020/dsa-4665 https://git.qemu.org/?p=qemu.git;a=commit;h=de594e47659029316bbf9391efb79da0a1a08e08 https://lists.gnu.org/archive/html/qemu-devel/2019-08/msg01518.html https://security-tracker.debian.org/tracker/CVE-2019-12068 https://lists.debian.org/debian-lts-announce/2019/09/msg00021.html https://lists.debian.org/debian-lts-announce/2020/07/msg00020.html SuSE Security Announcement: openSUSE-SU-2019:2505 (Google Search) http://lists.opensuse.org/opensuse-security-announce/2019-11/msg00038.html SuSE Security Announcement: openSUSE-SU-2019:2510 (Google Search) http://lists.opensuse.org/opensuse-security-announce/2019-11/msg00034.html https://usn.ubuntu.com/4191-1/ https://usn.ubuntu.com/4191-2/