Bug 718882 (CVE-2011-2519)

Summary: CVE-2011-2519 kernel: xen: x86_emulate: fix SAHF emulation
Product: [Other] Security Response Reporter: Eugene Teo (Security Response) <eteo>
Component: vulnerabilityAssignee: Red Hat Product Security <security-response-team>
Status: CLOSED ERRATA QA Contact:
Severity: medium Docs Contact:
Priority: medium    
Version: unspecifiedCC: anton, dhoward, drjones, imammedo, lersek, lwang, pbonzini, plougher, pmatouse, security-response-team, sforsber, xen-maint
Target Milestone: ---Keywords: Security
Target Release: ---   
Hardware: All   
OS: Linux   
Whiteboard:
Fixed In Version: Doc Type: Bug Fix
Doc Text:
Story Points: ---
Clone Of: Environment:
Last Closed: 2012-05-10 08:08:45 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: 718883, 718884, 753008, 798935    
Bug Blocks: 718879    

Description Eugene Teo (Security Response) 2011-07-05 01:22:26 UTC
Backport http://xenbits.xen.org/hg/xen-3.1-testing.hg/rev/15644

The patched code would cause a hypervisor crash due to dereferencing a bogus address (in the first 4 MBs of address space, as EFLAGS bits above bit 21 are always 0, but more likely in the first page).

Comment 4 Eugene Teo (Security Response) 2011-07-05 01:49:13 UTC
Statement:

This issue only affects Red Hat Enterprise Linux 5. The versions of the Linux
kernel-xen as shipped with Red Hat Enterprise Linux 4, 6, and Red Hat Enterprise MRG are not affected. This has been addressed in Red Hat Enterprise Linux 5 via https://rhn.redhat.com/errata/RHSA-2011-1212.html.

Comment 9 errata-xmlrpc 2011-09-13 15:44:15 UTC
This issue has been addressed in following products:

  Red Hat Enterprise Linux 5

Via RHSA-2011:1212 https://rhn.redhat.com/errata/RHSA-2011-1212.html

Comment 11 errata-xmlrpc 2011-12-13 21:29:17 UTC
This issue has been addressed in following products:

  Red Hat Enterprise Linux 5.6.Z - Server Only

Via RHSA-2011:1813 https://rhn.redhat.com/errata/RHSA-2011-1813.html

Comment 12 Petr Matousek 2012-03-01 10:30:37 UTC
Created xen tracking bugs for this issue

Affects: fedora-all [bug 798935]