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: vulnerabilityAssignee: Red Hat Product Security <security-response-team>
Status: CLOSED ERRATA QA Contact:
Severity: medium Docs Contact:
Priority: medium    
Version: unspecifiedCC: 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
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Clone Of: Environment:
Last Closed: 2015-07-29 12:43:26 UTC Type: ---
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oVirt Team: --- RHEL 7.3 requirements from Atomic Host:
Cloudforms Team: --- Target Upstream Version:
Embargoed:
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