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Bug 665169 - kexec: limit root to call kexec_load()
Summary: kexec: limit root to call kexec_load()
Keywords:
Status: CLOSED ERRATA
Alias: None
Product: Red Hat Enterprise Linux 6
Classification: Red Hat
Component: kernel
Version: 6.1
Hardware: Unspecified
OS: Unspecified
low
medium
Target Milestone: rc
: ---
Assignee: Eric Paris
QA Contact: Han Pingtian
URL:
Whiteboard:
Depends On:
Blocks: 655920
TreeView+ depends on / blocked
 
Reported: 2010-12-23 00:15 UTC by Eric Paris
Modified: 2011-05-23 20:32 UTC (History)
7 users (show)

Fixed In Version: kernel-2.6.32-117.el6
Doc Type: Bug Fix
Doc Text:
Clone Of:
Environment:
Last Closed: 2011-05-23 20:32:44 UTC
Target Upstream Version:
Embargoed:

Attachments (Terms of Use)


Links
System ID Private Priority Status Summary Last Updated
Red Hat Product Errata RHSA-2011:0542 0 normal SHIPPED_LIVE Important: Red Hat Enterprise Linux 6.1 kernel security, bug fix and enhancement update 2011-05-19 11:58:07 UTC

Description Eric Paris 2010-12-23 00:15:23 UTC 
sys_kexec_load currently checks CAP_SYS_BOOT.  CAP_SYS_BOOT is also used
to protect sys_boot.  But these operations are not exactly the same.
sys_boot is going to go back through the boot loader.  kexec_load actually
allows you to run any code you want in ring0.  This is more like
CAP_SYS_MODULE.  This patch requires having both to use sys_kexec_load()
Comment 4 Neil Horman 2011-01-03 15:28:57 UTC 
Triage assignment.  If you feel this bug doesn't belong to you, or that it cannot be handled in a timely fashion, please contact me for re-assignment
Comment 11 Aristeu Rozanski 2011-02-18 22:15:55 UTC 
Patch(es) available on kernel-2.6.32-117.el6
Comment 15 errata-xmlrpc 2011-05-23 20:32:44 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-2011-0542.html
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