Divide by Zero Vulnerability in Qemu's Cirrus CLGD 54xx VGA Emulator Support

Divide by Zero Vulnerability in Qemu's Cirrus CLGD 54xx VGA Emulator Support

CVE-2016-9921 · MEDIUM Severity

CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:N/I:N/A:H

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.

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