[LU-2035] Kernel update [RHEL6.3 2.6.32-279.11.1.el6]

• Type: Improvement
• Resolution: Fixed
• Priority: Minor
• Assignee: Yang Sheng
• Reporter: Yang Sheng

Description

This update fixes the following security issues:

• An integer overflow flaw was found in the i915_gem_do_execbuffer()
  function in the Intel i915 driver in the Linux kernel. A local,
  unprivileged user could use this flaw to cause a denial of service. This
  issue only affected 32-bit systems. (CVE-2012-2384, Moderate)

• A memory leak flaw was found in the way the Linux kernel's memory
  subsystem handled resource clean up in the mmap() failure path when the
  MAP_HUGETLB flag was set. A local, unprivileged user could use this flaw to
  cause a denial of service. (CVE-2012-2390, Moderate)

• A race condition was found in the way access to inet->opt ip_options was
  synchronized in the Linux kernel's TCP/IP protocol suite implementation.
  Depending on the network facing applications running on the system, a
  remote attacker could possibly trigger this flaw to cause a denial of
  service. A local, unprivileged user could use this flaw to cause a denial
  of service regardless of the applications the system runs. (CVE-2012-3552,
  Moderate)

• A flaw was found in the way the Linux kernel's dl2k driver, used by
  certain D-Link Gigabit Ethernet adapters, restricted IOCTLs. A local,
  unprivileged user could use this flaw to issue potentially harmful IOCTLs,
  which could cause Ethernet adapters using the dl2k driver to malfunction
  (for example, losing network connectivity). (CVE-2012-2313, Low)

• A flaw was found in the way the msg_namelen variable in the rds_recvmsg()
  function of the Linux kernel's Reliable Datagram Sockets (RDS) protocol
  implementation was initialized. A local, unprivileged user could use this
  flaw to leak kernel stack memory to user-space. (CVE-2012-3430, Low)

Bugs fixed (http://bugzilla.redhat.com/):

818820 - CVE-2012-2313 kernel: unfiltered netdev rio_ioctl access by users
820039 - CVE-2012-3430 kernel: recv

{from,msg}

() on an rds socket can leak kernel memory
824178 - CVE-2012-2384 kernel: drm/i915: integer overflow in i915_gem_do_execbuffer()
824345 - CVE-2012-2390 kernel: huge pages: memory leak on mmap failure
842982 - Change network with netconsole loaded cause kernel panic [rhel-6.3.z]
847945 - nfs_attr_use_mounted_on_file() returns wrong value [rhel-6.3.z]
849051 - dlm: deadlock between dlm_send and dlm_controld [rhel-6.3.z]
851444 - [qemu-kvm] [hot-plug] qemu-process (RHEL6.3 guest) goes into D state during nic hot unplug (netdev_del hostnet1) [rhel-6.3.z]
853465 - CVE-2012-3552 kernel: net: slab corruption due to improper synchronization around inet->opt