Bug 1930763 (CVE-2021-27379)

Summary:	CVE-2021-27379 xen: Missed flush in XSA-321 backport (XSA-366)
Product:	[Other] Security Response	Reporter:	Pedro Sampaio <psampaio>
Component:	vulnerability	Assignee:	Red Hat Product Security <security-response-team>
Status:	CLOSED UPSTREAM	QA Contact:
Severity:	medium	Docs Contact:
Priority:	medium
Version:	unspecified	CC:	jforbes, m.a.young, robinlee.sysu
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 flaw was found in xen. An oversight was made when backporting XSA-320, leading to entries in the IOMMU not being properly updated under certain circumstances.	Story Points:	---
Clone Of:		Environment:
Last Closed:	2021-02-22 13:02:13 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:	1930764
Bug Blocks:	1930765

Description Pedro Sampaio 2021-02-19 14:30:03 UTC

A flaw was found in xem. An oversight was made when backporting XSA-320, leading entries in the IOMMU not being properly updated under certain circumstances.

References:

https://xenbits.xen.org/xsa/advisory-366.html

Comment 1 Pedro Sampaio 2021-02-19 14:31:06 UTC

Created xen tracking bugs for this issue:

Affects: fedora-all [bug 1930764]

Comment 2 Eric Christensen 2021-02-19 18:54:24 UTC

External References:

https://xenbits.xen.org/xsa/advisory-366.html

Comment 3 Product Security DevOps Team 2021-02-22 13:02:13 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.