Bug 677850 (CVE-2011-0710)

Summary: CVE-2011-0710 kernel: s390 task_show_regs infoleak
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: low Docs Contact:
Priority: low    
Version: unspecifiedCC: arozansk, dhoward, jolsa, kernel-mgr, kmcmartin, lwang, plyons, rkhan, sgrubb, tcallawa, vgoyal, vkrizan, vmayatsk
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: 2015-07-29 13:50:30 UTC Type: ---
Regression: --- Mount Type: ---
Documentation: --- CRM:
Verified Versions: Category: ---
oVirt Team: --- RHEL 7.3 requirements from Atomic Host:
Cloudforms Team: ---
Bug Depends On: 677852, 677853, 677854, 677855    
Bug Blocks:    

Description Eugene Teo (Security Response) 2011-02-16 04:02:39 UTC
task_show_regs used to be a debugging aid in the early bringup days of Linux on s390. /proc/<pid>/status is a world readable file, it is not a good idea to show the registers of a process. The only correct fix is to remove task_show_regs.

Upstream commit:
http://git.kernel.org/linus/261cd298a8c363d7985e3482946edb4bfedacf98

Comment 3 Eugene Teo (Security Response) 2011-03-11 06:21:59 UTC
Statement:

This issue did not affect the version of Linux kernel as shipped with Red Hat Enterprise MRG as it does not have support for the S390 architecture. A future kernel update in Red Hat Enterprise Linux 6 may address this flaw. Red Hat Enterprise Linux 4 is now in Production 3 of the maintenance life-cycle,
https://access.redhat.com/support/policy/updates/errata/, therefore the fix for
this issue is not currently planned to be included in the future updates. This has been addressed in Red Hat Enterprise Linux 5 via https://rhn.redhat.com/errata/RHSA-2011-0429.html.

Comment 4 errata-xmlrpc 2011-04-08 02:57:44 UTC
This issue has been addressed in following products:

  Red Hat Enterprise Linux 6

Via RHSA-2011:0421 https://rhn.redhat.com/errata/RHSA-2011-0421.html

Comment 5 errata-xmlrpc 2011-04-12 18:20:12 UTC
This issue has been addressed in following products:

  Red Hat Enterprise Linux 5

Via RHSA-2011:0429 https://rhn.redhat.com/errata/RHSA-2011-0429.html