oss-security - CVE-2016-4454 Qemu: display: vmsvga: out-of-bounds read in vmsvga_fifo_read

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Message-ID: <alpine.LFD.2.20.1605301422320.26205@wniryva>
Date: Mon, 30 May 2016 14:24:39 +0530 (IST)
From: P J P <ppandit@...hat.com>
To: oss security list <oss-security@...ts.openwall.com>
cc: Li Qiang <liqiang6-s@....cn>
Subject: CVE-2016-4454 Qemu: display: vmsvga: out-of-bounds read in
 vmsvga_fifo_read_raw() routine

   Hello,

Quick Emulator(Qemu) built with the VMware-SVGA "chipset" emulation support is 
vulnerable to an information disclosure issue. It could occur while processing 
VGA commands via its FIFO buffer.

A privileged user inside guest could use this flaw to leak host memory bytes 
or crash the Qemu process resulting in DoS.

Upstream fix:
-------------
   -> https://lists.gnu.org/archive/html/qemu-devel/2016-05/msg05271.html

Reference:
----------
   -> https://bugzilla.redhat.com/show_bug.cgi?id=1336429

This issue was discovered and reported by Li Qiang of 360.cn Inc. 
CVE-2016-4454 was assigned by Red Hat 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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