oss-security - CVE-2020-27616 QEMU: ati-vga: potential crash via invalid x y parameter values

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Message-ID: <4so0n6n6-14p0-3r18-2p12-ors0683rono7@erqung.pbz>
Date: Tue, 3 Nov 2020 17:27:46 +0530 (IST)
From: P J P <ppandit@...hat.com>
To: oss security list <oss-security@...ts.openwall.com>
cc: Gaoning Pan <pgn@....edu.cn>
Subject: CVE-2020-27616 QEMU: ati-vga: potential crash via invalid x y
 parameter values

   Hello,

An out-of-bounds access issue was found in the ati-vga emulator of the QEMU. 
It could occur when the source and destination x,y display parameters in 
ati_2d_blt() have invalid values. A guest user/process may use this flaw to 
crash the QEMU process resulting in DoS scenario.

Upstream patch:
---------------
   -> https://lists.nongnu.org/archive/html/qemu-devel/2020-10/msg06080.html

This issue is reported by Gaoning Pan of Zhejiang University.

'CVE-2020-27616' assigned via -> https://cveform.mitre.org/

Thank you.
--
Prasad J Pandit / Red Hat Product Security Team
8685 545E B54C 486B C6EB 271E E285 8B5A F050 DE8D

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