Security update for the Linux Kernel (important)

The SUSE Linux Enterprise 11 SP1 kernel has been updated to
2.6.32.54, fixing numerous bugs and security issues.

The following security issues have been fixed:

• A potential hypervisor escape by issuing SG_IO
  commands to partitiondevices was fixed by restricting
  access to these commands. ( CVE-2011-4127
  <<a href=“http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2011-4127”>http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2011-4127</a>
  > )
• KEYS: Fix a NULL pointer deref in the user-defined
  key type, which allowed local attackers to Oops the kernel.
  (CVE-2011-4110
  <<a href=“http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2011-4110”>http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2011-4110</a>
  > )
• Avoid potential NULL pointer deref in ghash, which
  allowed local attackers to Oops the kernel. (CVE-2011-4081
  <<a href=“http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2011-4081”>http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2011-4081</a>
  > )
• Fixed a memory corruption possibility in xfs
  readlink, which could be used by local attackers to crash
  the system or potentially execute code by mounting a
  prepared xfs filesystem image. (CVE-2011-4077
  <<a href=“http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2011-4077”>http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2011-4077</a>
  > )
• A overflow in the xfs acl handling was fixed that
  could be used by local attackers to crash the system or
  potentially execute code by mounting a prepared xfs
  filesystem image. (CVE-2012-0038
  <<a href=“http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2012-0038”>http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2012-0038</a>
  > )
• A flaw in the ext3/ext4 filesystem allowed a local
  attacker to crash the kernel by getting a prepared
  ext3/ext4 filesystem mounted. ( CVE-2011-4132
  <<a href=“http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2011-4132”>http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2011-4132</a>
  > )
• Access to the taskstats /proc file was restricted to
  avoid local attackers gaining knowledge of IO of other
  users (and so effecting side-channel attacks for e.g.
  guessing passwords by typing speed). ( CVE-2011-2494
  <<a href=“http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2011-2494”>http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2011-2494</a>
  > )
• When using X.25 communication a malicious sender
  could corrupt data structures, causing crashes or potential
  code execution. Please note that X.25 needs to be setup to
  make this effective, which these days is usually not the
  case. (CVE-2010-3873
  <<a href=“http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2010-3873”>http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2010-3873</a>
  > )
• When using X.25 communication a malicious sender
  could make the machine leak memory, causing crashes. Please
  note that X.25 needs to be setup to make this effective,
  which these days is usually not the case. (CVE-2010-4164
  <<a href=“http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2010-4164”>http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2010-4164</a>
  > )
• A remote denial of service due to a NULL pointer
  dereference by using IPv6 fragments was fixed.
  (CVE-2011-2699
  <<a href=“http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2011-2699”>http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2011-2699</a>
  > )

The following non-security issues have been fixed (excerpt
from changelog):

• elousb: Fixed bug in USB core API usage, code cleanup.
• cifs: overhaul cifs_revalidate and rename to
  cifs_revalidate_dentry.
• cifs: set server_eof in cifs_fattr_to_inode.
• xfs: Fix missing xfs_iunlock() on error recovery path
  in xfs_readlink().
• Silence some warnings about ioctls on partitions.
• netxen: Remove all references to unified firmware
  file.
• bonding: send out gratuitous arps even with no
  address configured.
• patches.fixes/ocfs2-serialize_unaligned_aio.patch:
  ocfs2: serialize unaligned aio.

patches.fixes/bonding-check-if-clients-MAC-addr-has-changed.
patch: Update references.

• xfs: Fix wait calculations on lock acquisition and
  use milliseconds instead of jiffies to print the wait time.
• ipmi: reduce polling when interrupts are available.
• ipmi: reduce polling.
• export shrink_dcache_for_umount_subtree.
• patches.suse/stack-unwind: Fix more 2.6.29 merge
  problems plus a glue code problem.
• PM / Sleep: Fix race between CPU hotplug and freezer.
• jbd: Issue cache flush after checkpointing.
• lpfc: make sure job exists when processing BSG.
• blktap: fix locking (again).
• xen: Update Xen patches to 2.6.32.52.
• reiserfs: Lock buffers unconditionally in
  reiserfs_write_full_page().
• writeback: Include all dirty inodes in background
  writeback.
• reiserfs: Fix quota mount option parsing.
• bonding: check if clients MAC addr has changed.
• rpc client can not deal with ENOSOCK, so translate it
  into ENOCONN.
• st: modify tape driver to allow writing immediate
  filemarks.
• xfs: fix for xfssyncd failure to wake.
• ipmi: Fix deadlock in start_next_msg().
• net: bind() fix error return on wrong address family.
• net: ipv4: relax AF_INET check in bind().
• net/ipv6: check for mistakenly passed in non-AF_INET6
  sockaddrs.
• Bluetooth: Fixed Atheros AR3012 Maryann PID/VID
  supported.
• percpu: fix chunk range calculation.
• x86, UV: Fix kdump reboot.
• dm: Use done_bytes for io_completion.
• Bluetooth: Add Atheros AR3012 Maryann PID/VID
  supported.
• Bluetooth: Add Atheros AR3012 one PID/VID supported.
• fix missing hunk in oplock break patch.
• patches.arch/s390-34-01-pfault-cpu-hotplug.patch:
  Refresh.
• Surrounded s390x lowcore change with GENKSYMS
• patches.xen/xen3-patch-2.6.30: Refresh.
• sched, x86: Avoid unnecessary overflow in sched_clock.
• ACPI thermal: Do not invalidate thermal zone if
  critical trip point is bad.