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Date: Fri, 24 Apr 2020 16:43:45 +0200
From: Mauro Matteo Cascella <>
Cc: ziming zhang <>
Subject: CVE-2020-11869 qemu: integer overflow in ati_2d_blt()
 in hw/display/ati-2d.c could lead to DoS

Hello all,

An integer overflow flaw was found in QEMU in the way it implemented the
emulation. This flaw occurs in the ati_2d_blt() routine while handling MMIO
operations through ati_mm_write() callback. A malicious guest could abuse
flaw to crash the QEMU process, resulting in a denial of service.

Upstream patch:

This issue was reported by Ziming Zhang.
CVE-2020-11869 requested via ->

Thank you,


Mauro Matteo Cascella

Product Security Engineer

Red Hat <>

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