Bug 1903746

Summary:	xen: allowing x86 HVM guest OS users to cause a denial of service
Product:	[Other] Security Response	Reporter:	Dhananjay Arunesh <darunesh>
Component:	vulnerability	Assignee:	Red Hat Product Security <security-response-team>
Status:	CLOSED DUPLICATE	QA Contact:
Severity:	medium	Docs Contact:
Priority:	medium
Version:	unspecified	CC:	acaringi, ailan, bhu, bmasney, brdeoliv, dhoward, drjones, dvlasenk, fhrbata, hkrzesin, imammedo, jforbes, jshortt, jstancek, knoel, m.a.young, mcascell, mrezanin, nmurray, pbonzini, ptalbert, robinlee.sysu, rvrbovsk, vkuznets, walters, xen-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:	2020-12-03 08:41:30 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:	1902769, 1903748
Bug Blocks:

Description Dhananjay Arunesh 2020-12-02 17:58:40 UTC

An issue was discovered in Xen through 4.14.x allowing x86 HVM guest OS users to cause a denial of service (stack corruption), cause a data leak, or possibly gain privileges because of an off-by-one error. NOTE: this issue is caused by an incorrect fix for CVE-2020-27671.

References:
https://xenbits.xen.org/xsa/advisory-355.html

Comment 1 Dhananjay Arunesh 2020-12-02 17:59:24 UTC

Created xen tracking bugs for this issue:

Affects: fedora-all [bug 1903748]

Comment 2 Mauro Matteo Cascella 2020-12-03 08:41:30 UTC


*** This bug has been marked as a duplicate of bug 1902766 ***