QEMU VGA hw/display/cirrus_vga.c cirrus_do_copy divide by zero

CVSS Meta Temp Score
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CTI Interest Score
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A vulnerability was found in QEMU (Virtualization Software) (version unknown) and classified as problematic. This issue affects the function cirrus_do_copy of the file hw/display/cirrus_vga.c of the component VGA. The manipulation with an unknown input leads to a divide by zero vulnerability. Using CWE to declare the problem leads to CWE-369. The product divides a value by zero. Impacted is availability.

The bug was discovered 03/27/2017. The weakness was disclosed 03/27/2017 by Qinghao Tang with Qihoo 360 (oss-sec). It is possible to read the advisory at openwall.com. The identification of this vulnerability is CVE-2016-9922 since 12/08/2016. The exploitation is known to be easy. Attacking locally is a requirement. No form of authentication is needed for a successful exploitation. Technical details of the vulnerability are known, but there is no available exploit.

The vulnerability scanner Nessus provides a plugin with the ID 900039 , which helps to determine the existence of the flaw in a target environment. The commercial vulnerability scanner Qualys is able to test this issue with plugin 169489 (SUSE Enterprise Linux Security Update for qemu (SUSE-SU-2017:0127-1)).

Applying a patch is able to eliminate this problem. The bugfix is ready for download at git.qemu-project.org.

The vulnerability is also documented in the vulnerability database at Tenable (900039). The entries 94671, 94672, 94673 and 94674 are pretty similar.





CPE 2.3info

CPE 2.2info


VulDB Meta Base Score: 4.4
VulDB Meta Temp Score: 4.3

VulDB Base Score: 3.3
VulDB Temp Score: 3.2
VulDB Vector: 🔍
VulDB Reliability: 🔍

NVD Base Score: 5.5
NVD Vector: 🔍



VulDB Base Score: 🔍
VulDB Temp Score: 🔍
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NVD Base Score: 🔍


Class: Divide by zero
CWE: CWE-369 / CWE-404
ATT&CK: Unknown

Local: Yes
Remote: No

Availability: 🔍
Status: Not defined

EPSS Score: 🔍
EPSS Percentile: 🔍

Price Prediction: 🔍
Current Price Estimation: 🔍


Nessus ID: 900039
Nessus File: 🔍

OpenVAS ID: 865785
OpenVAS Name: Fedora Update for xen FEDORA-2016-1b868c23a9
OpenVAS File: 🔍
OpenVAS Family: 🔍

Qualys ID: 🔍
Qualys Name: 🔍

Threat Intelligenceinfo

Interest: 🔍
Active Actors: 🔍
Active APT Groups: 🔍


Recommended: Patch
Status: 🔍

0-Day Time: 🔍

Patch: 4299b90e9ba9ce5ca9024572804ba751aa1a7e70


12/08/2016 🔍
12/08/2016 +0 days 🔍
03/27/2017 +109 days 🔍
03/27/2017 +0 days 🔍
03/27/2017 +0 days 🔍
03/28/2017 +1 days 🔍
11/22/2022 +2065 days 🔍


Product: qemu.org

Advisory: RHSA-2017:2392
Researcher: Qinghao Tang
Organization: Qihoo 360
Status: Not defined
Confirmation: 🔍

CVE: CVE-2016-9922 (🔍)
SecurityFocus: 94803 - QEMU Divide By Zero Multiple Denial of Service Vulnerabilities
OSVDB: - CVE-2016-9922 - QEMU - Denial of Service Issue

See also: 🔍


Created: 03/28/2017 10:18 PM
Updated: 11/22/2022 05:58 PM
Changes: 03/28/2017 10:18 PM (76), 11/22/2022 05:58 PM (5)
Complete: 🔍


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