Loop with Unreachable Exit Condition ('Infinite Loop') Affecting qemu package, versions <1:2.11+dfsg-1ubuntu7.20
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Test your applications- Snyk ID SNYK-UBUNTU1804-QEMU-459336
- published 9 Aug 2019
- disclosed 24 Sep 2019
Introduced: 9 Aug 2019
CVE-2019-12068 Open this link in a new tabHow to fix?
Upgrade Ubuntu:18.04 qemu to version 1:2.11+dfsg-1ubuntu7.20 or higher.
NVD Description
Note: Versions mentioned in the description apply only to the upstream qemu package and not the qemu package as distributed by Ubuntu.
See How to fix? for Ubuntu:18.04 relevant fixed versions and status.
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
- http://people.ubuntu.com/~ubuntu-security/cve/CVE-2019-12068
- https://www.debian.org/security/2020/dsa-4665
- https://lists.debian.org/debian-lts-announce/2019/09/msg00021.html
- https://security-tracker.debian.org/tracker/CVE-2019-12068
- https://git.qemu.org/?p=qemu.git;a=commit;h=de594e47659029316bbf9391efb79da0a1a08e08
- https://lists.gnu.org/archive/html/qemu-devel/2019-08/msg01518.html
- https://lists.debian.org/debian-lts-announce/2020/07/msg00020.html
- http://lists.opensuse.org/opensuse-security-announce/2019-11/msg00034.html
- http://lists.opensuse.org/opensuse-security-announce/2019-11/msg00038.html
- https://usn.ubuntu.com/4191-1/
- https://usn.ubuntu.com/4191-2/
- https://git.qemu.org/?p=qemu.git%3Ba=commit%3Bh=de594e47659029316bbf9391efb79da0a1a08e08