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Bug 168993

Summary:	CAN-2005-3053 RHEL 4 sys_set_mempolicy allows invalid policy leading to panic
Product:	Red Hat Enterprise Linux 4	Reporter:	Issue Tracker <tao>
Component:	kernel	Assignee:	Larry Woodman <lwoodman>
Status:	CLOSED ERRATA	QA Contact:	Brian Brock <bbrock>
Severity:	high	Docs Contact:
Priority:	medium
Version:	4.0	CC:	jbaron, lwang, tao
Target Milestone:	---	Keywords:	Security
Target Release:	---
Hardware:	All
OS:	Linux
Whiteboard:	reported=20050921,public=20050801,source=it,impact=important
Fixed In Version:	RHSA-2005-808	Doc Type:	Bug Fix
Doc Text:		Story Points:	---
Clone Of:		Environment:
Last Closed:	2005-10-27 15:09:07 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:

Comment 13 Mark J. Cox 2005-10-27 14:37:35 UTC

The set_mempolicy system call does not check for negative numbers in the policy
field.  Setting a negative value will cause a panic when the process later
allocates a memory page.  This allows an unprivileged local user to panic the
system.

Comment 14 Red Hat Bugzilla 2005-10-27 15:09:08 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 the 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-2005-808.html