oss-security - CVE-2017-6386 Virglrenderer: memory leakage while in vrend_create_vertex_elements

Follow @Openwall on Twitter for new release announcements and other news

[<prev] [next>] [day] [month] [year] [list]

Date: Wed, 1 Mar 2017 12:08:16 +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-2017-6386 Virglrenderer: memory leakage while in
 vrend_create_vertex_elements_state

   Hello,

Virgil 3d project, used by Quick Emulator(Qemu) to implement 3D GPU support 
for the virtio GPU, is vulnerable to memory leakage issue. It could occur when 
a guest tries to create vertex elements via 'VIRGL_OBJECT_VERTEX_ELEMENTS' 
command.

A guest user/process could use this flaw to leak host memory resulting in DoS.

Upstream patch:
---------------
   -> https://cgit.freedesktop.org/virglrenderer/commit/?id=737c3350850ca4dbc5633b3bdb4118176ce59920

Reference:
----------
   -> https://bugzilla.redhat.com/show_bug.cgi?id=1427472

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

'CVE-2017-6386' assigned via -> http://cveform.mitre.org/

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

Please check out the Open Source Software Security Wiki, which is counterpart to this mailing list.

Confused about mailing lists and their use? Read about mailing lists on Wikipedia and check out these guidelines on proper formatting of your messages.