Bug 1422438 (CVE-2017-5993)

Summary:	CVE-2017-5993 Virglrenderer: host memory leakage when initialising blitter context
Product:	[Other] Security Response	Reporter:	Prasad Pandit <ppandit>
Component:	vulnerability	Assignee:	Red Hat Product Security <security-response-team>
Status:	CLOSED UPSTREAM	QA Contact:
Severity:	low	Docs Contact:
Priority:	low
Version:	unspecified	CC:	airlied, marcandre.lureau
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 03:07:41 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:	1422439
Bug Blocks:	1409505

Description Prasad Pandit 2017-02-15 10:52:31 UTC

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 initialise blitter context via 'VIRGL_CCMD_BLIT' 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=6eb13f7a2dcf391ec9e19b4c2a79e68305f63c22

Reference:
----------
  -> http://www.openwall.com/lists/oss-security/2017/02/15/7

Comment 1 Prasad Pandit 2017-02-15 10:52:43 UTC

Acknowledgments:

Name: Li Qiang (360.cn Inc.)

Comment 2 Prasad Pandit 2017-02-15 10:53:26 UTC

Created virglrenderer tracking bugs for this issue:

Affects: fedora-all [bug 1422439]

Comment 3 Product Security DevOps Team 2019-06-08 03:07:41 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.