Bug 456051

Summary: kernel: fix array out of bounds when mounting with selinux options [rhel-4.8]
Product: Red Hat Enterprise Linux 4 Reporter: Eugene Teo (Security Response) <eteo>
Component: kernelAssignee: Eugene Teo (Security Response) <eteo>
Status: CLOSED ERRATA QA Contact: Martin Jenner <mjenner>
Severity: high Docs Contact:
Priority: high    
Version: 4.8CC: lwang, riek, vgoyal
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: 2009-05-18 19:16:48 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: 456052, 461297    
Attachments:
Description Flags
Upstream patch for this issue none

Description Eugene Teo (Security Response) 2008-07-21 08:47:34 UTC 
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.
Comment 1 Eugene Teo (Security Response) 2008-07-21 08:49:05 UTC 
Proposed upstream patch:
http://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git;a=commitdiff;h=31e879309474d1666d645b96de99d0b682fa055f
Comment 2 Eugene Teo (Security Response) 2008-07-21 08:50:43 UTC 
Created attachment 312235 [details]
Upstream patch for this issue
Comment 4 RHEL Program Management 2008-07-21 13:42:06 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 6 RHEL Program Management 2008-09-03 13:03:03 UTC 
Updating PM score.
Comment 7 Vivek Goyal 2008-09-09 21:43:41 UTC 
Committed in 78.8.EL . RPMS are available at http://people.redhat.com/vgoyal/rhel4/
Comment 10 errata-xmlrpc 2009-05-18 19:16:48 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-2009-1024.html