Bug 701240 (CVE-2011-1763)

Summary:	CVE-2011-1763 kernel: xen: improper upper boundary check in get_free_port() function
Product:	[Other] Security Response	Reporter:	Petr Matousek <pmatouse>
Component:	vulnerability	Assignee:	Red Hat Product Security <security-response-team>
Status:	CLOSED ERRATA	QA Contact:
Severity:	medium	Docs Contact:
Priority:	medium
Version:	unspecified	CC:	ddutile, dhoward, imammedo, jlieskov, jmunilla, jzheng, leiwang, lersek, lwang, moshiro, mrezanin, pbonzini, pmatouse, qwan, rkhan, security-response-team, sforsber, xen-maint, yuzhang
Target Milestone:	---	Keywords:	Regression, Security
Target Release:	---
Hardware:	All
OS:	Linux
Whiteboard:
Fixed In Version:		Doc Type:	Bug Fix
Doc Text:		Story Points:	---
Clone Of:		Environment:
Last Closed:	2015-07-29 12:43:26 UTC	Type:	---
Regression:	---	Mount Type:	---
Documentation:	---	CRM:
Verified Versions:		Category:	---
oVirt Team:	---	RHEL 7.3 requirements from Atomic Host:
Cloudforms Team:	---	Target Upstream Version:
Bug Depends On:	701242, 701243
Bug Blocks:

Description Petr Matousek 2011-05-02 09:09:27 UTC

Description:
A flaw was found in the way Xen hypervisor checked for upper boundary when
getting a new event channel port. A privileged DomU user could use this
flaws to cause denial of service or, possibly, increase his privileges.

Comment 15 Petr Matousek 2011-05-03 11:48:58 UTC

This issue does not affect upstream.

Comment 16 Petr Matousek 2011-05-03 11:56:07 UTC

Statement:

This issue only affects Red Hat Enterprise Linux 5 as we did not backport upstream Xen unstable commit 2dcdd2fcb945. The versions of the Linux kernel as shipped with Red Hat Enterprise Linux 4, 6, and Red Hat Enterprise MRG are not affected.

Comment 19 errata-xmlrpc 2011-05-31 14:06:16 UTC

This issue has been addressed in following products:

  Red Hat Enterprise Linux 5

Via RHSA-2011:0833 https://rhn.redhat.com/errata/RHSA-2011-0833.html