Bug 1929552 (CVE-2021-26932)

Summary:	CVE-2021-26932 xen: Linux: grant mapping error handling issues
Product:	[Other] Security Response	Reporter:	msiddiqu
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:		Story Points:	---
Clone Of:		Environment:
Last Closed:	2021-02-17 07:02:29 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:	1929553
Bug Blocks:	1924847

Description msiddiqu 2021-02-17 06:18:09 UTC

Grant mapping operations often occur in batch hypercalls, where a
number of operations are done in a single hypercall, the success or
failure of each one reported to the backend driver, and the backend
driver then loops over the results, performing follow-up actions based
on the success or failure of each operation.

External References:

https://xenbits.xen.org/xsa/advisory-361.html

Comment 1 msiddiqu 2021-02-17 06:18:29 UTC

Created xen tracking bugs for this issue:

Affects: fedora-all [bug 1929553]

Comment 2 Product Security DevOps Team 2021-02-17 07:02:29 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.