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Red Hat Security Advisory: RHSA-2010-0331-01 Moderate GFS Kernel Update

red hat
Calendar Grey March 30, 2010
Dist Redhat Esm H88
Significant patch release for GFS-kernel within Red Hat Enterprise Linux, focusing on a key synchronization code enhancement.
Updated GFS-kernel packages that fix one security issue are now available for Red Hat Enterprise Linux 4.8, kernel release 2.6.9-89.0.20.EL

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

Summary

The GFS-kernel packages contain modules that provide the ability to mount and use GFS file systems.
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-kernel packages are in sync with the latest kernel (2.6.9-89.0.20.EL). The modules in earlier GFS-kernel 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.
Users are advised to upgrade to these latest GFS-kernel packages, which resolve this issue and are updated for use with the 2.6.9-89.0.20.EL kernel.

Topics%20covered

Topics Covered

security advisory red hat kernel update moderate threat gfs issues

References

https://access.redhat.com/security/cve/CVE-2010-0727 https://access.redhat.com/security/updates/classification#moderate

Package List

Red Hat Global File System 4AS:
Source:
i386: GFS-kernel-2.6.9-85.2.el4_8.10.i686.rpm GFS-kernel-debuginfo-2.6.9-85.2.el4_8.10.i686.rpm GFS-kernel-hugemem-2.6.9-85.2.el4_8.10.i686.rpm GFS-kernel-smp-2.6.9-85.2.el4_8.10.i686.rpm GFS-kernel-xenU-2.6.9-85.2.el4_8.10.i686.rpm GFS-kernheaders-2.6.9-85.2.el4_8.10.i686.rpm
ia64: GFS-kernel-2.6.9-85.2.el4_8.10.ia64.rpm GFS-kernel-debuginfo-2.6.9-85.2.el4_8.10.ia64.rpm GFS-kernheaders-2.6.9-85.2.el4_8.10.ia64.rpm
ppc: GFS-kernel-2.6.9-85.2.el4_8.10.ppc64.rpm GFS-kernel-debuginfo-2.6.9-85.2.el4_8.10.ppc64.rpm GFS-kernel-largesmp-2.6.9-85.2.el4_8.10.ppc64.rpm GFS-kernheaders-2.6.9-85.2.el4_8.10.ppc64.rpm
x86_64: GFS-kernel-2.6.9-85.2.el4_8.10.x86_64.rpm GFS-kernel-debuginfo-2.6.9-85.2.el4_8.10.x86_64.rpm GFS-kernel-largesmp-2.6.9-85.2.el4_8.10.x86_64.rpm GFS-kernel-smp-2.6.9-85.2.el4_8.10.x86_64.rpm GFS-kernel-xenU-2.6.9-85.2.el4_8.10.x86_64.rpm GFS-kernheaders-2.6.9-85.2.el4_8.10.x86_64.rpm
Red Hat Global File System 4ES:
Source:
i386: GFS-kernel-2.6.9-85.2.el4_8.10.i686.rpm GFS-kernel-debuginfo-2.6.9-85.2.el4_8.10.i686.rpm GFS-kernel-hugemem-2.6.9-85.2.el4_8.10.i686.rpm GFS-kernel-smp-2.6.9-85.2.el4_8.10.i686.rpm GFS-kernel-xenU-2.6.9-85.2.el4_8.10.i686.rpm GFS-kernheaders-2.6.9-85.2.el4_8.10.i686.rpm
ia64:

Read the Full Advisory


Advisory ID: RHSA-2010:0331-01
Product: Red Hat Global File System
Advisory URL: https://access.redhat.com/errata/RHSA-2010:0331.html
Issue date: 2010-03-30

Topic

Updated GFS-kernel packages that fix one security issue are now availablefor Red Hat Enterprise Linux 4.8, kernel release 2.6.9-89.0.20.EL.The Red Hat Security Response Team has rated this update as having moderatesecurity impact. A Common Vulnerability Scoring System (CVSS) base score,which gives a detailed severity rating, is available from the CVE link inthe References section.

Topics%20covered

Topics Covered

security advisory red hat kernel update moderate threat gfs issues

Relevant Releases Architectures

Red Hat Global File System 4AS - i386, ia64, ppc, x86_64

Red Hat Global File System 4ES - i386, ia64, x86_64

Red Hat Global File System 4WS - i386, ia64, x86_64

Bugs Fixed

570863 - CVE-2010-0727 bug in GFS/GFS2 locking code leads to dos

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