CVE-2016-9921

Advisory lineage Upstream: 0 Downstream: 21
Modified
Published: 23 Dec 2016, 22:00
Last modified:06 Aug 2024, 03:07

Vulnerability Summary

Overall Risk (default)
medium
26/100
CVSS Score
6.5 MEDIUM
v3.1 (nvd)
EPSS Score
0.1% LOW
0% probability 0.00%
KEV
Not listed
Ransomware
No reports
Public exploits
None found
Dark Web
Not detected

Timeline

23 Dec 2016, 22:00
Published
Vulnerability first disclosed
06 Aug 2024, 03:07
Last Modified
Vulnerability information updated

Description

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.

CVSS Metrics

  • v3.1•MEDIUM•Score: 6.5CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:N/I:N/A:H
  • v2.0•LOW•Score: 2.1AV:L/AC:L/Au:N/C:N/I:N/A:P

EPSS Trends

Current EPSS score: 0.10%• Percentile: 28%

Techniques & Countermeasures

  • CWE-369•Divide By Zero

    The product divides a value by zero.

Affected Systems

  • debian•debian_linux

    8.0

  • qemu•qemu

    ≤ 2.7.1 | 2.8.0:rc0 | 2.8.0:rc1 | 2.8.0:rc2

  • redhat•openstack

    6.0 | 7.0 | 8 | 9 | 10 | 11

  • redhat•virtualization

    4.0

References (6)