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Bug 456052

Summary: kernel: fix array out of bounds when mounting with selinux options [rhel-5.3]
Product: Red Hat Enterprise Linux 5 Reporter: Eugene Teo (Security Response) <eteo>
Component: kernelAssignee: Eugene Teo (Security Response) <eteo>
Status: CLOSED ERRATA QA Contact: Martin Jenner <mjenner>
Severity: low Docs Contact:
Priority: low    
Version: 5.3CC: dzickus, lwang
Target Milestone: rc   
Target Release: ---   
Hardware: All   
OS: Linux   
Whiteboard:
Fixed In Version: Doc Type: Bug Fix
Doc Text:
Story Points: ---
Clone Of: Environment:
Last Closed: 2009-01-20 20:22:37 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: 456051    
Bug Blocks:    
Attachments:
Description Flags
Upstream patch for this issue none

Description Eugene Teo (Security Response) 2008-07-21 08:53:08 UTC 
+++ This bug was initially created as a clone of Bug #456051 +++

Description of problem:
Given an illegal selinux option it was possible for match_token to work in
random memory at the end of the match_table_t array.

Note that privilege is required to perform a context mount, so this issue is
effectively limited to root only.

-- Additional comment from eteo on 2008-07-21 04:49 EST --
Proposed upstream patch:
http://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git;a=commitdiff;h=31e879309474d1666d645b96de99d0b682fa055f
Comment 1 Eugene Teo (Security Response) 2008-07-21 08:54:23 UTC 
Created attachment 312236 [details]
Upstream patch for this issue
Comment 3 RHEL Program Management 2008-07-21 13:42:03 UTC 
This request was evaluated by Red Hat Product Management for inclusion in a Red
Hat Enterprise Linux maintenance release.  Product Management has requested
further review of this request by Red Hat Engineering, for potential
inclusion in a Red Hat Enterprise Linux Update release for currently deployed
products.  This request is not yet committed for inclusion in an Update
release.
Comment 5 Don Zickus 2008-07-25 20:26:54 UTC 
in kernel-2.6.18-100.el5
You can download this test kernel from http://people.redhat.com/dzickus/el5
Comment 9 errata-xmlrpc 2009-01-20 20:22:37 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-2009-0225.html