| Beschreibung: | Description:
The remote host is missing updates announced in
advisory RHSA-2009:1635.
The kernel-rt packages contain the Linux kernel, the core of any Linux
operating system.
These updated packages fix the following security issues:
* a NULL pointer dereference flaw was found in the NFSv4 implementation in
the Linux kernel. Several of the NFSv4 file locking functions failed to
check whether a file had been opened on the server before performing
locking operations on it. A local user on a system with an NFSv4 share
mounted could possibly use this flaw to cause a denial of service or
escalate their privileges. (CVE-2009-3726, Important)
* permission issues were found in the megaraid_sas driver (for SAS based
RAID controllers) in the Linux kernel. The dbg_lvl and poll_mode_io
files on the sysfs file system (/sys/) had world-writable permissions.
This could allow local, unprivileged users to change the behavior of the
driver. (CVE-2009-3889, CVE-2009-3939, Moderate)
Users should upgrade to these updated packages, which contain backported
patches to correct these issues and add these enhancements. The system must
be rebooted for this update to take effect.
Solution:
Please note that this update is available via
Red Hat Network. To use Red Hat Network, launch the Red
Hat Update Agent with the following command: up2date
http://rhn.redhat.com/errata/RHSA-2009-1635.html
http://www.redhat.com/security/updates/classification/#important
CVSS Score:
7.8
CVSS Vector:
AV:N/AC:L/Au:N/C:N/I:N/A:C
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