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Date: Thu, 8 Dec 2016 13:02:04 +0530 (IST)
From: P J P <>
To: oss security list <>
Subject: CVE request Qemu: display: cirrus_vga: a divide by zero in


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.

Upstream patch


This issue was independently reported by Qinghao Tang, Li Qiang of Qihoo Inc. and PSIRTeam of Huawei Inc.

Thank you.
Prasad J Pandit / Red Hat Product Security Team
47AF CE69 3A90 54AA 9045 1053 DD13 3D32 FE5B 041F

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