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Bug 684267 - kernel: missing CONFIG_STRICT_DEVMEM=y in S390x [rhel-6.0.z]
kernel: missing CONFIG_STRICT_DEVMEM=y in S390x [rhel-6.0.z]
Status: CLOSED ERRATA
Product: Red Hat Enterprise Linux 6
Classification: Red Hat
Component: kernel (Show other bugs)
6.1
s390x Linux
urgent Severity high
: rc
: ---
Assigned To: Frantisek Hrbata
Red Hat Kernel QE team
: ZStream
Depends On: 647365
Blocks:
  Show dependency tree / graph
 
Reported: 2011-03-11 11:19 EST by RHEL Product and Program Management
Modified: 2011-04-12 08:49 EDT (History)
11 users (show)

See Also:
Fixed In Version: kernel-2.6.32-71.21.1.el6
Doc Type: Bug Fix
Doc Text:
On IBM System z systems, user space programs could access the /dev/mem file (which contains an image of main memory), where an accidental memory (write) access could potentially be harmful. To restrict access to memory from user space through the /dev/mem file, the CONFIG_STRICT_DEVMEM configuration option has been enabled for the default kernel. The kdump and debug kernels have this option switched off by default.
Story Points: ---
Clone Of:
Environment:
Last Closed: 2011-04-07 22:59:16 EDT
Type: ---
Regression: ---
Mount Type: ---
Documentation: ---
CRM:
Verified Versions:
Category: ---
oVirt Team: ---
RHEL 7.3 requirements from Atomic Host:
Cloudforms Team: ---

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External Trackers
Tracker ID Priority Status Summary Last Updated
Red Hat Product Errata RHSA-2011:0421 normal SHIPPED_LIVE Important: kernel security and bug fix update 2011-04-07 22:56:45 EDT

  None (edit)
Description RHEL Product and Program Management 2011-03-11 11:19:14 EST 
This bug has been copied from bug #647365 and has been proposed
to be backported to 6.0 z-stream (EUS).
Comment 5 errata-xmlrpc 2011-04-07 22:59:16 EDT 
An advisory has been issued which should help the problem
described in this bug report. This report is therefore being
closed with a resolution of ERRATA. For more information
on therefore solution and/or where to find the updated files,
please follow the link below. You may reopen this bug report
if the solution does not work for you.

http://rhn.redhat.com/errata/RHSA-2011-0421.html
Comment 6 Martin Prpič 2011-04-12 08:49:05 EDT 
    Technical note added. If any revisions are required, please edit the "Technical Notes" field
    accordingly. All revisions will be proofread by the Engineering Content Services team.
    
    New Contents:
On IBM System z systems, user space programs could access the /dev/mem file (which contains an image of main memory), where an accidental memory (write) access could potentially be harmful. To restrict access to memory from user space through the /dev/mem file, the CONFIG_STRICT_DEVMEM configuration option has been enabled for the default kernel. The kdump and debug kernels have this option switched off by default.
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