Bug 594630 - kernel: security: testing the wrong variable in create_by_name() [mrg-1]
Summary: kernel: security: testing the wrong variable in create_by_name() [mrg-1]
Keywords:
Status: CLOSED ERRATA
Alias: None
Product: Red Hat Enterprise MRG
Classification: Red Hat
Component: realtime-kernel
Version: 1.2
Hardware: All
OS: Linux
medium
medium
Target Milestone: ---
: ---
Assignee: Luis Claudio R. Goncalves
QA Contact: David Sommerseth
URL:
Whiteboard:
Depends On:
Blocks: 621752
TreeView+ depends on / blocked
 
Reported: 2010-05-21 08:18 UTC by Eugene Teo (Security Response)
Modified: 2016-05-22 23:30 UTC (History)
5 users (show)

Fixed In Version:
Doc Type: Bug Fix
Doc Text:
Fixed a typo in security filesystem code that should be dereferencing an inode pointer and instead was checking the value of the pointer.
Clone Of:
: 621752 (view as bug list)
Environment:
Last Closed: 2010-08-17 15:54:03 UTC

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Links
System ID Priority Status Summary Last Updated
Red Hat Product Errata RHSA-2010:0631 normal SHIPPED_LIVE Important: kernel-rt security and bug fix update 2010-08-18 07:58:39 UTC

Description Eugene Teo (Security Response) 2010-05-21 08:18:48 UTC 
Description of problem:
There is a typo here.  We should be testing "*dentry" instead of "dentry".  If
"*dentry" is an ERR_PTR, it gets dereferenced in either mkdir() or create()
which would cause an OOPs.

This bug has been in the kernel since 2.6.14-rc2 via b67dbf9d.

Upstream commit:
http://git.kernel.org/linus/b338cc8207eae46640a8d534738fda7b5e48511d
Comment 1 Luis Claudio R. Goncalves 2010-06-21 17:45:31 UTC 
Patch bz594630-testing-wrong-variable-in-create_by_name.patch, backport of upstream commit b338cc8207eae46640a8d534738fda7b5e48511d added to kernel -159 patch queue.
Comment 3 David Sommerseth 2010-07-21 09:48:07 UTC 
Verified by code review.  Found bz594630-testing-wrong-variable-in-create_by_name.patch implemented in kernel-rt-2.6.24.7-160.src.rpm.
Comment 4 Clark Williams 2010-07-26 20:55:00 UTC 
Technical note added. If any revisions are required, please edit the "Technical Notes" field
accordingly. All revisions will be proofread by the Engineering Content Services team.

New Contents:
Fixed a typo in security filesystem code that should be dereferencing an inode pointer and instead was checking the value of the pointer.
Comment 5 errata-xmlrpc 2010-08-17 15:54:03 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-2010-0631.html
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