Bug 665169

Summary:	kexec: limit root to call kexec_load()
Product:	Red Hat Enterprise Linux 6	Reporter:	Eric Paris <eparis>
Component:	kernel	Assignee:	Eric Paris <eparis>
Status:	CLOSED ERRATA	QA Contact:	Han Pingtian <phan>
Severity:	medium	Docs Contact:
Priority:	low
Version:	6.1	CC:	amwang, bsarathy, llim, mjenner, phan, qcai, sgrubb
Target Milestone:	rc
Target Release:	---
Hardware:	Unspecified
OS:	Unspecified
Whiteboard:
Fixed In Version:	kernel-2.6.32-117.el6	Doc Type:	Bug Fix
Doc Text:		Story Points:	---
Clone Of:		Environment:
Last Closed:	2011-05-23 20:32:44 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:
Bug Blocks:	655920

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