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
Status
| Package | Release | Status |
|---|---|---|
|
qemu Launchpad, Ubuntu, Debian |
artful |
Not vulnerable
(1:2.8+dfsg-3ubuntu2)
|
| bionic |
Not vulnerable
(1:2.8+dfsg-3ubuntu2)
|
|
| cosmic |
Not vulnerable
(1:2.8+dfsg-3ubuntu2)
|
|
| disco |
Not vulnerable
(1:2.8+dfsg-3ubuntu2)
|
|
| eoan |
Not vulnerable
(1:2.8+dfsg-3ubuntu2)
|
|
| focal |
Not vulnerable
(1:2.8+dfsg-3ubuntu2)
|
|
| groovy |
Not vulnerable
(1:2.8+dfsg-3ubuntu2)
|
|
| hirsute |
Not vulnerable
(1:2.8+dfsg-3ubuntu2)
|
|
| precise |
Does not exist
|
|
| trusty |
Released
(2.0.0+dfsg-2ubuntu1.33)
|
|
| upstream |
Needed
|
|
| xenial |
Released
(1:2.5+dfsg-5ubuntu10.11)
|
|
| yakkety |
Released
(1:2.6.1+dfsg-0ubuntu5.4)
|
|
| zesty |
Not vulnerable
(1:2.8+dfsg-3ubuntu2)
|
|
|
Patches: upstream: http://git.qemu-project.org/?p=qemu.git;a=commit;h=4299b90e9ba9ce5ca9024572804ba751aa1a7e70 |
||
|
qemu-kvm Launchpad, Ubuntu, Debian |
artful |
Does not exist
|
| bionic |
Does not exist
|
|
| cosmic |
Does not exist
|
|
| disco |
Does not exist
|
|
| eoan |
Does not exist
|
|
| focal |
Does not exist
|
|
| groovy |
Does not exist
|
|
| hirsute |
Does not exist
|
|
| precise |
Ignored
(reached end-of-life)
|
|
| trusty |
Does not exist
|
|
| upstream |
Needed
|
|
| xenial |
Does not exist
|
|
| yakkety |
Does not exist
|
|
| zesty |
Does not exist
|
|
Severity score breakdown
| Parameter | Value |
|---|---|
| Base score | 6.5 |
| Attack vector | Local |
| Attack complexity | Low |
| Privileges required | Low |
| User interaction | None |
| Scope | Changed |
| Confidentiality | None |
| Integrity impact | None |
| Availability impact | High |
| Vector | CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:N/I:N/A:H |