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=====================================================================
Red Hat Security Advisory

Synopsis: Moderate: GFS security and bug fix update
Advisory ID: RHSA-2010:0330-01
Product: Red Hat Global File System
Advisory URL: https://rhn.redhat.com/errata/RHSA-2010-0330.html
Issue date: 2010-03-30
CVE Names: CVE-2010-0727
=====================================================================

1. Summary:

Updated GFS packages that fix one security issue are now available for Red
Hat Enterprise Linux 3.9, kernel release 2.4.21-63.EL.

The Red Hat Security Response Team has rated this update as having moderate
security impact. A Common Vulnerability Scoring System (CVSS) base score,
which gives a detailed severity rating, is available from the CVE link in
the References section.

2. Relevant releases/architectures:

Red Hat Global File System 3AS - i386, ia64, x86_64
Red Hat Global File System 3ES - i386, ia64, x86_64
Red Hat Global File System 3WS - i386, ia64, x86_64

3. Description:

The Red Hat Global File System (GFS) allows a cluster of Linux servers to
share data in a common pool of storage.

A flaw was found in the gfs_lock() implementation. The GFS locking code
could skip the lock operation for files that have the S_ISGID bit
(set-group-ID on execution) in their mode set. A local, unprivileged user
on a system that has a GFS file system mounted could use this flaw to cause
a kernel panic. (CVE-2010-0727)

As well, these updated GFS packages are in sync with the latest kernel
(2.4.21-63.EL). The modules in earlier GFS packages fail to load because
they do not match the running kernel. It is possible to force-load the
modules; however, with this update, force-loading the modules is not
required. (BZ#525198)

Users are advised to upgrade to these latest GFS packages, which resolve
this issue and are updated for use with the 2.4.21-63.EL kernel.

4. Solution:

Before applying this update, make sure all previously-released errata
relevant to your system have been applied.

This update is available via the Red Hat Network. Details on how to
use the Red Hat Network to apply this update are available at
http://kbase.redhat.com/faq/docs/DOC-11259

5. Bugs fixed (http://bugzilla.redhat.com/):

525198 - Need rebuild for 2.4.21-63.EL kernel
570863 - CVE-2010-0727 bug in GFS/GFS2 locking code leads to dos

6. Package List:

Red Hat Global File System 3AS:

Source:
ftp://updates.redhat.com/enterprise/3AS/en/RHGFS/SRPMS/GFS-6.0.2.36-13.src.rpm

i386:
GFS-6.0.2.36-13.i386.rpm
GFS-6.0.2.36-13.i686.rpm
GFS-debuginfo-6.0.2.36-13.i386.rpm
GFS-debuginfo-6.0.2.36-13.i686.rpm
GFS-devel-6.0.2.36-13.i386.rpm
GFS-devel-6.0.2.36-13.i686.rpm
GFS-modules-6.0.2.36-13.i386.rpm
GFS-modules-6.0.2.36-13.i686.rpm
GFS-modules-hugemem-6.0.2.36-13.i686.rpm
GFS-modules-smp-6.0.2.36-13.i686.rpm

ia64:
GFS-6.0.2.36-13.ia64.rpm
GFS-debuginfo-6.0.2.36-13.ia64.rpm
GFS-devel-6.0.2.36-13.ia64.rpm
GFS-modules-6.0.2.36-13.ia64.rpm

x86_64:
GFS-6.0.2.36-13.ia32e.rpm
GFS-6.0.2.36-13.x86_64.rpm
GFS-debuginfo-6.0.2.36-13.ia32e.rpm
GFS-debuginfo-6.0.2.36-13.x86_64.rpm
GFS-devel-6.0.2.36-13.ia32e.rpm
GFS-devel-6.0.2.36-13.x86_64.rpm
GFS-modules-6.0.2.36-13.ia32e.rpm
GFS-modules-6.0.2.36-13.x86_64.rpm
GFS-modules-smp-6.0.2.36-13.x86_64.rpm

Red Hat Global File System 3ES:

Source:
ftp://updates.redhat.com/enterprise/3ES/en/RHGFS/SRPMS/GFS-6.0.2.36-13.src.rpm

i386:
GFS-6.0.2.36-13.i386.rpm
GFS-6.0.2.36-13.i686.rpm
GFS-debuginfo-6.0.2.36-13.i386.rpm
GFS-debuginfo-6.0.2.36-13.i686.rpm
GFS-devel-6.0.2.36-13.i386.rpm
GFS-devel-6.0.2.36-13.i686.rpm
GFS-modules-6.0.2.36-13.i386.rpm
GFS-modules-6.0.2.36-13.i686.rpm
GFS-modules-hugemem-6.0.2.36-13.i686.rpm
GFS-modules-smp-6.0.2.36-13.i686.rpm

ia64:
GFS-6.0.2.36-13.ia64.rpm
GFS-debuginfo-6.0.2.36-13.ia64.rpm
GFS-devel-6.0.2.36-13.ia64.rpm
GFS-modules-6.0.2.36-13.ia64.rpm

x86_64:
GFS-6.0.2.36-13.ia32e.rpm
GFS-6.0.2.36-13.x86_64.rpm
GFS-debuginfo-6.0.2.36-13.ia32e.rpm
GFS-debuginfo-6.0.2.36-13.x86_64.rpm
GFS-devel-6.0.2.36-13.ia32e.rpm
GFS-devel-6.0.2.36-13.x86_64.rpm
GFS-modules-6.0.2.36-13.ia32e.rpm
GFS-modules-6.0.2.36-13.x86_64.rpm
GFS-modules-smp-6.0.2.36-13.x86_64.rpm

Red Hat Global File System 3WS:

Source:
ftp://updates.redhat.com/enterprise/3WS/en/RHGFS/SRPMS/GFS-6.0.2.36-13.src.rpm

i386:
GFS-6.0.2.36-13.i386.rpm
GFS-6.0.2.36-13.i686.rpm
GFS-debuginfo-6.0.2.36-13.i386.rpm
GFS-debuginfo-6.0.2.36-13.i686.rpm
GFS-devel-6.0.2.36-13.i386.rpm
GFS-devel-6.0.2.36-13.i686.rpm
GFS-modules-6.0.2.36-13.i386.rpm
GFS-modules-6.0.2.36-13.i686.rpm
GFS-modules-hugemem-6.0.2.36-13.i686.rpm
GFS-modules-smp-6.0.2.36-13.i686.rpm

ia64:
GFS-6.0.2.36-13.ia64.rpm
GFS-debuginfo-6.0.2.36-13.ia64.rpm
GFS-devel-6.0.2.36-13.ia64.rpm
GFS-modules-6.0.2.36-13.ia64.rpm

x86_64:
GFS-6.0.2.36-13.ia32e.rpm
GFS-6.0.2.36-13.x86_64.rpm
GFS-debuginfo-6.0.2.36-13.ia32e.rpm
GFS-debuginfo-6.0.2.36-13.x86_64.rpm
GFS-devel-6.0.2.36-13.ia32e.rpm
GFS-devel-6.0.2.36-13.x86_64.rpm
GFS-modules-6.0.2.36-13.ia32e.rpm
GFS-modules-6.0.2.36-13.x86_64.rpm
GFS-modules-smp-6.0.2.36-13.x86_64.rpm

These packages are GPG signed by Red Hat for security. Our key and
details on how to verify the signature are available from
https://www.redhat.com/security/team/key/#package

7. References:

https://www.redhat.com/security/data/cve/CVE-2010-0727.html
http://www.redhat.com/security/updates/classification/#moderate

8. Contact:

The Red Hat security contact is . More contact
details at https://www.redhat.com/security/team/contact/

Copyright 2010 Red Hat, Inc.
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