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Bug 749156 - (CVE-2011-4077) CVE-2011-4077 kernel: xfs: potential buffer overflow in xfs_readlink()
CVE-2011-4077 kernel: xfs: potential buffer overflow in xfs_readlink()
Status: CLOSED ERRATA
Product: Security Response
Classification: Other
Component: vulnerability (Show other bugs)
unspecified
All Linux
medium Severity medium
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Assigned To: Red Hat Product Security
impact=moderate,public=20110408,repor...
: Security
Depends On: 694702 749159 749160 749161 749162 749166 761375
Blocks: 749153
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Reported: 2011-10-26 06:43 EDT by Petr Matousek
Modified: 2015-08-19 05:13 EDT (History)
24 users (show)

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Doc Type: Bug Fix
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Last Closed: 2013-04-24 00:10:48 EDT
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RHEL 7.3 requirements from Atomic Host:


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Description Petr Matousek 2011-10-26 06:43:24 EDT
A flaw was found in the way Linux kernel's XFS filesystem implementation handled links with pathname larger than MAXPATHLEN. When CONFIG_XFS_DEBUG configuration option was not enabled when compiling Linux kernel, an attacker able to mount malicious XFS image could use this flaw to crash the system, or potentially, elevate his privileges on that system.

Proposed upstream patch:
http://oss.sgi.com/archives/xfs/2011-10/msg00345.html
Comment 4 Petr Matousek 2011-10-26 06:50:47 EDT
Statement:

This issue did not affect the versions of Linux kernel as shipped with Red Hat Enterprise Linux 4 as it did not include support for XFS filesystem. This has been addressed in Red Hat Enterprise Linux 5, 6 and Red Hat Enterprise MRG via https://rhn.redhat.com/errata/RHSA-2012-0007.html, https://rhn.redhat.com/errata/RHSA-2012-0350.html, and https://rhn.redhat.com/errata/RHSA-2012-0333.html.
Comment 5 Petr Matousek 2011-10-26 06:58:34 EDT
Created kernel tracking bugs for this issue

Affects: fedora-all [bug 749166]
Comment 8 errata-xmlrpc 2012-01-10 15:08:54 EST
This issue has been addressed in following products:

  Red Hat Enterprise Linux 5

Via RHSA-2012:0007 https://rhn.redhat.com/errata/RHSA-2012-0007.html
Comment 12 errata-xmlrpc 2012-02-23 15:23:07 EST
This issue has been addressed in following products:

  MRG for RHEL-6 v.2

Via RHSA-2012:0333 https://rhn.redhat.com/errata/RHSA-2012-0333.html
Comment 13 errata-xmlrpc 2012-03-06 13:44:20 EST
This issue has been addressed in following products:

  Red Hat Enterprise Linux 6

Via RHSA-2012:0350 https://rhn.redhat.com/errata/RHSA-2012-0350.html

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