Bug 684267 - kernel: missing CONFIG_STRICT_DEVMEM=y in S390x [rhel-6.0.z]
Summary: kernel: missing CONFIG_STRICT_DEVMEM=y in S390x [rhel-6.0.z]
Keywords:
Status: CLOSED ERRATA
Alias: None
Product: Red Hat Enterprise Linux 6
Classification: Red Hat
Component: kernel
Version: 6.1
Hardware: s390x
OS: Linux
urgent
high
Target Milestone: rc
: ---
Assignee: Frantisek Hrbata
QA Contact: Red Hat Kernel QE team
URL:
Whiteboard:
Depends On: 647365
Blocks:
TreeView+ depends on / blocked
 
Reported: 2011-03-11 16:19 UTC by RHEL Program Management
Modified: 2011-04-12 12:49 UTC (History)
11 users (show)

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.
Clone Of:
Environment:
Last Closed: 2011-04-08 02:59:16 UTC
Target Upstream Version:

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Links
System ID Private Priority Status Summary Last Updated
Red Hat Product Errata RHSA-2011:0421 0 normal SHIPPED_LIVE Important: kernel security and bug fix update 2011-04-08 02:56:45 UTC

Description RHEL Program Management 2011-03-11 16:19:14 UTC 
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 2011-04-08 02:59:16 UTC 
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 12:49:05 UTC 
    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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