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Category:Red Hat Local Security Checks
Title:RedHat Security Advisory RHSA-2010:0907
The remote host is missing updates announced in
advisory RHSA-2010:0907.

The kernel packages contain the Linux kernel, the core of any Linux
operating system.

This update fixes the following security issue:

* Buffer overflow flaws were found in the Linux kernel's implementation of
the server-side External Data Representation (XDR) for the Network File
System (NFS) version 4. An attacker on the local network could send a
specially-crafted large compound request to the NFSv4 server, which could
possibly result in a kernel panic (denial of service) or, potentially, code
execution. (CVE-2010-2521, Important)

This update also fixes the following bugs:

* A race condition existed when generating new process IDs with the result
that the wrong process could have been signaled or killed accidentally,
leading to various application faults. This update detects and disallows
the reuse of PID numbers. (BZ#638865)

* In a two node cluster, moving 100 files between two folders using the
lock master was nearly instantaneous. However, not using the lock master
resulted in considerably worse performance on both GFS1 (Global File System
1) and GFS2 (Global File System 2) file systems. With this update, not
using the lock master does not lead to worsened performance on either of
the aforementioned file systems. (BZ#639071)

* The device naming changed after additional devices were added to the
system and caused various problems. With this update, device naming remains
constant after adding any additional devices. (BZ#646764)

* On some bnx2-based devices, frames could drop unexpectedly. This was
shown by the increasing rx_fw_discards values in the ethtool
--statistics output. With this update, frames are no longer dropped and
all bnx2-based devices work as expected. (BZ#649254)

Users should upgrade to these updated packages, which contain backported
patches to correct these issues. The system must be rebooted for this
update to take effect.

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

Risk factor : High

Cross-Ref: Common Vulnerability Exposure (CVE) ID: CVE-2010-2521
BugTraq ID: 42249
Bugtraq: 20110211 VMSA-2011-0003 Third party component updates for VMware vCenter Server, vCenter Update Manager, ESXi and ESX (Google Search)
Debian Security Information: DSA-2094 (Google Search)
RedHat Security Advisories: RHSA-2010:0606
SuSE Security Announcement: SUSE-SA:2010:040 (Google Search)
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