Bug 547255 (CVE-2009-4308) - CVE-2009-4308 kernel: ext4: Avoid null pointer dereference when decoding EROFS w/o a journal
Summary: CVE-2009-4308 kernel: ext4: Avoid null pointer dereference when decoding EROF...
Keywords:
Status: CLOSED ERRATA
Alias: CVE-2009-4308
Product: Security Response
Classification: Other
Component: vulnerability
Version: unspecified
Hardware: All
OS: Linux
medium
medium
Target Milestone: ---
Assignee: Red Hat Product Security
QA Contact:
URL:
Whiteboard:
Depends On: 547256 547257
Blocks:
TreeView+ depends on / blocked
 
Reported: 2009-12-14 05:56 UTC by Eugene Teo (Security Response)
Modified: 2022-04-20 13:00 UTC (History)
9 users (show)

Fixed In Version:
Doc Type: Bug Fix
Doc Text:
Clone Of:
Environment:
Last Closed: 2015-07-10 16:20:31 UTC
Embargoed:

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System ID Private Priority Status Summary Last Updated
Red Hat Product Errata RHSA-2010:0147 0 normal SHIPPED_LIVE Important: kernel security and bug fix update 2010-03-17 00:18:44 UTC

Description Eugene Teo (Security Response) 2009-12-14 05:56:16 UTC 
Description of problem:
ext4: Avoid null pointer dereference when decoding EROFS w/o a journal
    
We need to check to make sure a journal is present before checking the journal flags in ext4_decode_error().

Upstream commit:
http://git.kernel.org/linus/78f1ddbb498283c2445c11b0dfa666424c301803

Reference:
http://secunia.com/advisories/37658
Comment 3 Aristeu Rozanski 2010-01-26 13:40:24 UTC 
Patch present on the current RHEL6 git tree
Comment 4 errata-xmlrpc 2010-03-17 00:19:07 UTC 
This issue has been addressed in following products:

  Red Hat Enterprise Linux 5

Via RHSA-2010:0147 https://rhn.redhat.com/errata/RHSA-2010-0147.html
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