Bug 1421073 (CVE-2017-5956)

Summary:	CVE-2017-5956 Virglrenderer: OOB access while in vrend_draw_vbo
Product:	[Other] Security Response	Reporter:	Prasad Pandit <ppandit>
Component:	vulnerability	Assignee:	Red Hat Product Security <security-response-team>
Status:	CLOSED UPSTREAM	QA Contact:
Severity:	medium	Docs Contact:
Priority:	medium
Version:	unspecified	CC:	security-response-team
Target Milestone:	---	Keywords:	Security
Target Release:	---
Hardware:	All
OS:	Linux
Whiteboard:
Fixed In Version:		Doc Type:	If docs needed, set a value
Doc Text:		Story Points:	---
Clone Of:		Environment:
Last Closed:	2019-06-08 03:07:25 UTC	Type:	---
Regression:	---	Mount Type:	---
Documentation:	---	CRM:
Verified Versions:		Category:	---
oVirt Team:	---	RHEL 7.3 requirements from Atomic Host:
Cloudforms Team:	---	Target Upstream Version:
Embargoed:
Bug Depends On:	1421074
Bug Blocks:	1409508

Description Prasad Pandit 2017-02-10 09:51:01 UTC

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:
----------
  -> http://www.openwall.com/lists/oss-security/2017/02/13/2

Comment 1 Prasad Pandit 2017-02-10 09:51:06 UTC

Acknowledgments:

Name: Li Qiang (360.cn Inc.)

Comment 2 Prasad Pandit 2017-02-10 09:53:33 UTC

Created virglrenderer tracking bugs for this issue:

Affects: fedora-all [bug 1421074]

Comment 3 Product Security DevOps Team 2019-06-08 03:07:25 UTC

This CVE Bugzilla entry is for community support informational purposes only as it does not affect a package in a commercially supported Red Hat product. Refer to the dependent bugs for status of those individual community products.