Bug 547255 – CVE-2009-4308 kernel: ext4: Avoid null pointer dereference when decoding EROFS w/o a journal

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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...

Status:	CLOSED ERRATA

Aliases:	CVE-2009-4308

Product:	Security Response
Classification:	Other
Component:	vulnerability (Show other bugs)
Sub Component:
Version:	unspecified
Hardware:	All Linux

Priority	medium Severity medium
Target Milestone:	---
Target Release:	---
Assigned To:	Red Hat Product Security
QA Contact:
Docs Contact:

URL:
Whiteboard:	impact=moderate,reported=20091214,pub...
Keywords:	Security

Depends On:	547256 547257
Blocks:
	Show dependency tree / graph

Reported:	2009-12-14 00:56 EST by Eugene Teo (Security Response)
Modified:	2015-07-29 13:47 EDT (History)
CC List:	9 users (show)

See Also:
Fixed In Version:
Doc Type:	Bug Fix
Doc Text:
Story Points:	---
Clone Of:
Environment:
Last Closed:	2015-07-10 12:20:31 EDT
Type:	---
Regression:	---
Mount Type:	---
Documentation:	---
CRM:
Verified Versions:
Category:	---
oVirt Team:	---
RHEL 7.3 requirements from Atomic Host:
Cloudforms Team:	---

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External Trackers
Tracker	ID	Priority	Status	Summary	Last Updated
Red Hat Product Errata	RHSA-2010:0147	normal	SHIPPED_LIVE	Important: kernel security and bug fix update	2010-03-16 20:18:44 EDT

Groups: None (edit)

Description Eugene Teo (Security Response) 2009-12-14 00:56:16 EST

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 08:40:24 EST

Patch present on the current RHEL6 git tree

Comment 4 errata-xmlrpc 2010-03-16 20:19:07 EDT

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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