Bug 665169 – kexec: limit root to call kexec_load()

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Bug 665169 - kexec: limit root to call kexec_load()

Summary:	kexec: limit root to call kexec_load()

Status:	CLOSED ERRATA

Aliases:	None

Product:	Red Hat Enterprise Linux 6
Classification:	Red Hat
Component:	kernel (Show other bugs)
Sub Component:
Version:	6.1
Hardware:	Unspecified Unspecified

Priority	low Severity medium
Target Milestone:	rc
Target Release:	---
Assigned To:	Eric Paris
QA Contact:	Han Pingtian
Docs Contact:

URL:
Whiteboard:
Keywords:

Depends On:
Blocks:	655920
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Reported:	2010-12-22 19:15 EST by Eric Paris
Modified:	2011-05-23 16:32 EDT (History)
CC List:	7 users (show)

See Also:
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 16:32:44 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-2011:0542	normal	SHIPPED_LIVE	Important: Red Hat Enterprise Linux 6.1 kernel security, bug fix and enhancement update	2011-05-19 07:58:07 EDT

Groups: None (edit)

Description Eric Paris 2010-12-22 19:15:23 EST

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 10:28:57 EST

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 17:15:55 EST

Patch(es) available on kernel-2.6.32-117.el6

Comment 15 errata-xmlrpc 2011-05-23 16:32:44 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-2011-0542.html

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