Loop with Unreachable Exit Condition ('Infinite Loop') Affecting qemu package, versions <1:3.1+dfsg-8+deb10u5
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Test your applications- Snyk ID SNYK-DEBIAN10-QEMU-458889
- 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 Debian:10
qemu
to version 1:3.1+dfsg-8+deb10u5 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 Debian
.
See How to fix?
for Debian:10
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
- https://security-tracker.debian.org/tracker/CVE-2019-12068
- https://www.debian.org/security/2020/dsa-4665
- https://lists.debian.org/debian-lts-announce/2019/09/msg00021.html
- 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
- http://people.ubuntu.com/~ubuntu-security/cve/CVE-2019-12068
- https://usn.ubuntu.com/4191-1/
- https://usn.ubuntu.com/4191-2/
- https://git.qemu.org/?p=qemu.git%3Ba=commit%3Bh=de594e47659029316bbf9391efb79da0a1a08e08