Detections
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CVE-2019-12068
low
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.
References
https://www.debian.org/security/2020/dsa-4665
https://usn.ubuntu.com/4191-2/
https://usn.ubuntu.com/4191-1/
https://security-tracker.debian.org/tracker/CVE-2019-12068
https://lists.gnu.org/archive/html/qemu-devel/2019-08/msg01518.html
https://lists.debian.org/debian-lts-announce/2020/07/msg00020.html
https://lists.debian.org/debian-lts-announce/2019/09/msg00021.html
https://git.qemu.org/?p=qemu.git%3Ba=commit%3Bh=de594e47659029316bbf9391efb79da0a1a08e08
http://lists.opensuse.org/opensuse-security-announce/2019-11/msg00038.html
http://lists.opensuse.org/opensuse-security-announce/2019-11/msg00034.html