oss-security - CVE request Qemu: display: virtio-gpu-3d: OOB access while reading virgl capabilities

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Message-ID: <alpine.LFD.2.20.1612201815510.29699@wniryva>
Date: Tue, 20 Dec 2016 18:18:03 +0530 (IST)
From: P J P <ppandit@...hat.com>
To: oss security list <oss-security@...ts.openwall.com>
cc: Zhenhao Hong <zhenhaohong@...il.com>
Subject: CVE request Qemu: display: virtio-gpu-3d: OOB access while reading
 virgl capabilities

   Hello,

Quick Emulator(Qemu) built with the Virtio GPU Device emulator support is 
vulnerable to an out of bounds memory access issue. It could occur while 
processing 'VIRTIO_GPU_CMD_GET_CAPSET' command.

A guest user/process could use this flaw to crash the Qemu process instance on 
a host, resulting in DoS.

Upstream patch:
---------------
   -> https://lists.gnu.org/archive/html/qemu-devel/2016-12/msg01903.html

This issue was reported by Zhenhao Hong, Marvel Team of 360.cn 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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