Bug 428961 (CVE-2008-0007)

Summary:	CVE-2008-0007 kernel: insufficient range checks in fault handlers with mremap
Product:	[Other] Security Response	Reporter:	Jan Lieskovsky <jlieskov>
Component:	vulnerability	Assignee:	Red Hat Product Security <security-response-team>
Status:	CLOSED ERRATA	QA Contact:
Severity:	high	Docs Contact:
Priority:	high
Version:	unspecified	CC:	anton, dhoward, kreilly, security-response-team
Target Milestone:	---	Keywords:	Security
Target Release:	---
Hardware:	All
OS:	Linux
Whiteboard:
Fixed In Version:		Doc Type:	Bug Fix
Doc Text:		Story Points:	---
Clone Of:		Environment:
Last Closed:	2010-12-21 17:14:21 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:	428965, 428966, 428967, 428968, 428969, 428970, 428971
Bug Blocks:

Description Jan Lieskovsky 2008-01-16 14:48:37 UTC

Description of problem:

Problem description from Nick Piggin:

<cite>

Hi,

I have done an audit of some code and found security problems in several
drivers and some core code as well. I have only verified it is a problem and
patched it, but not explored the severity of the problem. However, it could be
anything up to allowing a local user to have read/write access of arbitrary
kernel memory.

</cite>

Acknowledgements:

Red Hat would like to thank Nick Piggin for responsibly disclosing this issue.

Comment 7 Jan Lieskovsky 2008-02-08 08:56:15 UTC

Link to 2.6.23-stable review patch:

http://lkml.org/lkml/2008/2/6/457

Link to kernel changelog:

http://www.kernel.org/pub/linux/kernel/v2.6/ChangeLog-2.6.22.17

Comment 8 Jan Lieskovsky 2008-02-08 09:27:39 UTC

CVE-2008-0007 description:

Linux kernel before 2.6.22.17, when using certain drivers that register a fault
handler that does not perform range checks, allows local users to access kernel
memory via an out-of-range offset.

Comment 9 Jan Lieskovsky 2008-03-03 16:17:44 UTC

This issue already public -- see comment c#7 for more details.

Comment 13 Vincent Danen 2010-12-21 17:14:21 UTC

This was addressed via:

Red Hat Enterprise Linux version 3 (RHSA-2008:0211)
Red Hat Enterprise Linux version 5 (RHSA-2008:023)
Red Hat Enterprise Linux version 4 (RHSA-2008:0237)
Red Hat Linux Advanced Workstation 2.1 (RHSA-2008:0787)
Red Hat Enterprise Linux version 2.1 (RHSA-2009:0001)