Bug 1765584 (CVE-2019-18390)

Summary:	CVE-2019-18390 virglrenderer: out-of-bounds read in the vrend_blit_need_swizzle may lead to DoS
Product:	[Other] Security Response	Reporter:	Marian Rehak <mrehak>
Component:	vulnerability	Assignee:	Red Hat Product Security <security-response-team>
Status:	CLOSED ERRATA	QA Contact:
Severity:	low	Docs Contact:
Priority:	low
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:		Story Points:	---
Clone Of:		Environment:
Last Closed:	2021-10-25 09:54:43 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:	1784704, 1784705
Bug Blocks:	1765598

Description Marian Rehak 2019-10-25 13:51:30 UTC

An out-of-bounds read in the vrend_blit_need_swizzle function in vrend_renderer.c in virglrenderer through 0.8.0 allows guest OS users to cause a denial of service via VIRGL_CCMD_BLIT commands.

Upstream Issue:

https://gitlab.freedesktop.org/virgl/virglrenderer/merge_requests/314/diffs?commit_id=d2cdbcf6a8f2317f250fd54f08aa35dde2fa3e30#3cd772559e0d73afa136d6818023cfd0c4c8ecc0_0_151

Comment 1 Marian Rehak 2019-10-25 13:52:33 UTC

Upstream Patch:

https://gitlab.freedesktop.org/virgl/virglrenderer/commit/24f67de7a9088a873844a39be03cee6882260ac9

Comment 3 Prasad Pandit 2019-12-18 06:36:29 UTC

Created virglrenderer tracking bugs for this issue:

Affects: fedora-all [bug 1784704]