(RHSA-2010:0331) Moderate: GFS-kernel security and bug fix update

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.