Bug 458755 - kernel: dlm: fix possible use-after-free [mrg-1]
Summary: kernel: dlm: fix possible use-after-free [mrg-1]
Keywords:
Status: CLOSED ERRATA
Alias: None
Product: Red Hat Enterprise MRG
Classification: Red Hat
Component: realtime-kernel
Version: 1.1
Hardware: All
OS: Linux
medium
medium
Target Milestone: 1.0.3
: ---
Assignee: Red Hat Real Time Maintenance
QA Contact:
URL:
Whiteboard:
Depends On:
Blocks:
TreeView+ depends on / blocked
 
Reported: 2008-08-12 04:01 UTC by Eugene Teo (Security Response)
Modified: 2008-10-07 19:20 UTC (History)
5 users (show)

Fixed In Version:
Doc Type: Bug Fix
Doc Text:
Clone Of:
Environment:
Last Closed: 2008-10-07 19:20:53 UTC
Target Upstream Version:
Embargoed:

Attachments (Terms of Use)
Upstream patch for this issue (1017 bytes, patch)
2008-08-12 04:06 UTC, Eugene Teo (Security Response) 		no flags Details | Diff
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Links
System ID Private Priority Status Summary Last Updated
Red Hat Product Errata RHSA-2008:0857 0 normal SHIPPED_LIVE Important: kernel security and bug fix update 2008-10-07 19:18:59 UTC

Description Eugene Teo (Security Response) 2008-08-12 04:01:56 UTC 
Description of problem:
The dlm_put_lkb() can free the lkb and its associated ua structure, so we can't depend on using the ua struct after the put.
Comment 1 Eugene Teo (Security Response) 2008-08-12 04:05:06 UTC 
Proposed upstream patch:
http://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git;a=commitdiff;h=ce5246b972f7514af899a63c0faf831d05ed5ee1
Comment 2 Eugene Teo (Security Response) 2008-08-12 04:06:19 UTC 
Created attachment 314041 [details]
Upstream patch for this issue
Comment 3 Beth Uptagrafft 2008-09-05 18:32:28 UTC 
in -77
Comment 5 David Sommerseth 2008-09-23 11:37:10 UTC 
Verified that upstream commit ce5246b972f7514af899a63c0faf831d05ed5ee1 is implemented in the mrg-rt-2.6.24-81 code.  (mrg-rt commit e7d3f287ddc307fb78b15dd7d2ef3a6a77e29bbc)
Comment 7 errata-xmlrpc 2008-10-07 19:20:53 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-2008-0857.html
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