oss-security - CVE-2017-5956 virglrenderer: Virglrenderer: OOB access while in vrend_draw

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Message-ID: <alpine.LFD.2.20.1702131021590.18948@wniryva>
Date: Mon, 13 Feb 2017 10:30:38 +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-2017-5956 virglrenderer: Virglrenderer: OOB access while in
 vrend_draw_vbo

   Hello,

Virgil 3d project, used by Quick Emulator(Qemu) to implement 3D GPU support 
for the virtio GPU, is vulnerable to an OOB array access issue. It could occur 
when in vrend_draw_vbo.

A guest user/process could use this flaw to crash the Qemu process instance 
resulting DoS.

Upstream patch:
---------------
   -> https://cgit.freedesktop.org/virglrenderer/commit/?id=a5ac49940c40ae415eac0cf912eac7070b4ba95d

Reference:
----------
   -> https://bugzilla.redhat.com/show_bug.cgi?id=1421073

This issue was reported by Li Qiang of 360.cn Inc.

'CVE-2017-5956' assigned via -> https://cveform.mitre.org/

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

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