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Date: Wed, 30 Aug 2017 15:34:51 +0530 (IST)
From: P J P <>
To: oss security list <>
cc: David Buchanan <>
Subject: CVE-2017-13673 Qemu: vga: reachable assert failure during during
 display update


Quick emulator(Qemu) built with the VGA display emulator support is vulnerable 
to an assert failure issue. It could occur while updating graphics display, 
due to miscalculating region for dirty bitmap snapshot in split screen mode.

A privileged user/process inside guest could use this flaw to crash the Qemu 
process on the host resulting in DoS.

Upstream patch:


This issue was reported by David Buchanan.

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

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