Bug 1765577 (CVE-2019-18389)

Summary:	CVE-2019-18389 virglrenderer: heap buffer overflow in the vrend_renderer_transfer_write_iov function
Product:	[Other] Security Response	Reporter:	Marian Rehak <mrehak>
Component:	vulnerability	Assignee:	Red Hat Product Security <security-response-team>
Status:	CLOSED ERRATA	QA Contact:
Severity:	high	Docs Contact:
Priority:	high
Version:	unspecified	CC:	airlied, marcandre.lureau, security-response-team, virt-maint
Target Milestone:	---	Keywords:	Security
Target Release:	---
Hardware:	All
OS:	Linux
Whiteboard:
Fixed In Version:		Doc Type:	If docs needed, set a value
Doc Text:	A heap-based buffer overflow flaw was found in virglrenderer. The vrend_renderer_transfer_write_iov function allows guest OS users to cause a denial of service or a QEMU guest-to-host escape with code execution. The highest threat from this vulnerability is to data confidentiality and integrity as well as to system availability.	Story Points:	---
Clone Of:		Environment:
Last Closed:	2021-10-25 09:54:25 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:	1784502, 1784503
Bug Blocks:	1765598

Description Marian Rehak 2019-10-25 13:17:56 UTC

A heap-based buffer overflow in the vrend_renderer_transfer_write_iov function in vrend_renderer.c in virglrenderer through 0.8.0 allows guest OS users to cause a denial of service, or QEMU guest-to-host escape and code execution, via VIRGL_CCMD_RESOURCE_INLINE_WRITE commands.

Upstream Issue:

https://gitlab.freedesktop.org/virgl/virglrenderer/merge_requests/314/diffs?commit_id=9c280a28651507e6ef87b17b90d47b6af3a4ab7d

Comment 1 Marian Rehak 2019-10-25 13:20:18 UTC

Upstream patch:

https://gitlab.freedesktop.org/virgl/virglrenderer/commit/cbc8d8b75be360236cada63784046688aeb6d921

Comment 2 Prasad Pandit 2019-12-17 15:38:20 UTC

Created virglrenderer tracking bugs for this issue:

Affects: fedora-all [bug 1784502]