kernel security update

CentOS Errata and Security Advisory CESA-2009:1222

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

These updated packages fix the following security issues:

• a flaw was found in the SOCKOPS_WRAP macro in the Linux kernel. This
  macro did not initialize the sendpage operation in the proto_ops structure
  correctly. A local, unprivileged user could use this flaw to cause a local
  denial of service or escalate their privileges. (CVE-2009-2692, Important)

• a flaw was found in the udp_sendmsg() implementation in the Linux kernel
  when using the MSG_MORE flag on UDP sockets. A local, unprivileged user
  could use this flaw to cause a local denial of service or escalate their
  privileges. (CVE-2009-2698, Important)

Red Hat would like to thank Tavis Ormandy and Julien Tinnes of the Google
Security Team for responsibly reporting these flaws.

These updated packages also fix the following bug:

• in the dlm code, a socket was allocated in tcp_connect_to_sock(), but was
  not freed in the error exit path. This bug led to a memory leak and an
  unresponsive system. A reported case of this bug occurred after running
  “cman_tool kill -n [nodename]”. (BZ#515432)

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.

Merged security bulletin from advisories:
https://lists.centos.org/pipermail/centos-announce/2009-August/078271.html
https://lists.centos.org/pipermail/centos-announce/2009-August/078272.html

Affected packages:
kernel
kernel-PAE
kernel-PAE-devel
kernel-debug
kernel-debug-devel
kernel-devel
kernel-doc
kernel-headers
kernel-xen
kernel-xen-devel

Upstream details at:
https://access.redhat.com/errata/RHSA-2009:1222