(RHSA-2013:1195) Important: kernel security and bug fix update

Red Hat OpenStack 3.0 includes a custom Red Hat Enterprise Linux 6.4
kernel. These custom kernel packages include support for network
namespaces, this support is required to facilitate advanced OpenStack
Networking deployments.

This update fixes the following security issues:

• A flaw was found in the way the Linux kernel’s Stream Control
  Transmission Protocol (SCTP) implementation handled duplicate cookies. If a
  local user queried SCTP connection information at the same time a remote
  attacker has initialized a crafted SCTP connection to the system, it could
  trigger a NULL pointer dereference, causing the system to crash.
  (CVE-2013-2206, Important)

• An invalid free flaw was found in the Linux kernel’s TCP/IP protocol
  suite implementation. A local, unprivileged user could use this flaw to
  corrupt kernel memory via crafted sendmsg() calls, allowing them to cause a
  denial of service or, potentially, escalate their privileges on the system.
  (CVE-2013-2224, Important)

• A flaw was found in the Linux kernel’s Performance Events implementation.
  On systems with certain Intel processors, a local, unprivileged user could
  use this flaw to cause a denial of service by leveraging the perf subsystem
  to write into the reserved bits of the OFFCORE_RSP_0 and OFFCORE_RSP_1
  model-specific registers. (CVE-2013-2146, Moderate)

• An invalid pointer dereference flaw was found in the Linux kernel’s
  TCP/IP protocol suite implementation. A local, unprivileged user could use
  this flaw to crash the system or, potentially, escalate their privileges on
  the system by using sendmsg() with an IPv6 socket connected to an IPv4
  destination. (CVE-2013-2232, Moderate)

• Information leak flaws in the Linux kernel’s Bluetooth implementation
  could allow a local, unprivileged user to leak kernel memory to user-space.
  (CVE-2012-6544, Low)

• An information leak flaw in the Linux kernel could allow a privileged,
  local user to leak kernel memory to user-space. (CVE-2013-2237, Low)

In addition, the following bugs and features have been addressed:
995409, 995125, 993251, 985838, 975974

More information on the Red Hat Enterprise Linux 6.4 kernel packages upon
which these custom kernel packages are based is available in
RHSA-2013:1173:

https://rhn.redhat.com/errata/RHSA-2013-1173.html

All Red Hat OpenStack 3.0 users deploying the OpenStack Networking service
are advised to install these updated packages.