CVE-2016-9921

Published: 23 December 2016

Quick emulator (Qemu) built with the Cirrus CLGD 54xx VGA Emulator support is vulnerable to a divide by zero issue. It could occur while copying VGA data when cirrus graphics mode was set to be VGA. A privileged user inside guest could use this flaw to crash the Qemu process instance on the host, resulting in DoS.

Priority

Low

CVSS 3 base score: 6.5

Status

Package Release Status
qemu
Launchpad, Ubuntu, Debian
Upstream Needed

Ubuntu 21.04 (Hirsute Hippo) Not vulnerable
(1:2.8+dfsg-3ubuntu2)
Ubuntu 20.04 LTS (Focal Fossa) Not vulnerable
(1:2.8+dfsg-3ubuntu2)
Ubuntu 18.04 LTS (Bionic Beaver) Not vulnerable
(1:2.8+dfsg-3ubuntu2)
Ubuntu 16.04 ESM (Xenial Xerus)
Released (1:2.5+dfsg-5ubuntu10.11)
Ubuntu 14.04 ESM (Trusty Tahr)
Released (2.0.0+dfsg-2ubuntu1.33)
Patches:
Upstream: http://git.qemu-project.org/?p=qemu.git;a=commit;h=4299b90e9ba9ce5ca9024572804ba751aa1a7e70
qemu-kvm
Launchpad, Ubuntu, Debian
Upstream Needed

Ubuntu 21.04 (Hirsute Hippo) Does not exist

Ubuntu 20.04 LTS (Focal Fossa) Does not exist

Ubuntu 18.04 LTS (Bionic Beaver) Does not exist

Ubuntu 16.04 ESM (Xenial Xerus) Does not exist

Ubuntu 14.04 ESM (Trusty Tahr) Does not exist