Security update for Linux kernel (important)

The SUSE Linux Enterprise 11 Service Pack 1 kernel has been
updated to version 2.6.32.49 and fixes various bugs and
security issues.

• CVE-2011-3188: The TCP/IP initial sequence number
  generation effectively only used 24 bits of 32 to generate
  randomness, making a brute force man-in-the-middle attack
  on TCP/IP connections feasible. The generator was changed
  to use full 32bit randomness.
• CVE-2011-2699: Fernando Gont discovered that the IPv6
  stack used predictable fragment identification numbers. A
  remote attacker could exploit this to exhaust network
  resources, leading to a denial of service.
• CVE-2011-2203: A NULL ptr dereference on mounting
  corrupt hfs filesystems was fixed which could be used by
  local attackers to crash the kernel.
• CVE-2011-1833: Added a kernel option to ensure
  ecryptfs is mounting only on paths belonging to the current
  ui, which would have allowed local attackers to potentially
  gain privileges via symlink attacks.
• CVE-2011-1576: The Generic Receive Offload (GRO)
  implementation in the Linux kernel allowed remote attackers
  to cause a denial of service via crafted VLAN packets that
  are processed by the napi_reuse_skb function, leading to
  (1) a memory leak or (2) memory corruption, a different
  vulnerability than CVE-2011-1478.
• CVE-2011-4330: A name overflow in the hfs filesystem
  was fixed, where mounting a corrupted hfs filesystem could
  lead to a stack overflow and code execution in the kernel.
  This requires a local attacker to be able to mount hfs
  filesystems.
• CVE-2011-4326: A bug was found in the way headroom
  check was performed in udp6_ufo_fragment() function. A
  remote attacker could use this flaw to crash the system.

The following non-security bugs have been fixed:

• ALSA: hda - Fix S3/S4 problem on machines with
  VREF-pin mute-LED (bnc#732535).
• patches.xen/xen-pcpu-hotplug: Fix a double kfree().
• ixgbe: fix bug with vlan strip in promsic mode
  (bnc#687049, fate#311821).
• ixgbe: fix panic when shutting down system with WoL
  enabled.
• fnic: Allow users to modify dev_loss_tmo setting
  (bnc#719786).
• x86, intel: Do not mark sched_clock() as stable
  (bnc#725709).
• ALSA: hda - Keep vref-LED during power-saving on IDT
  codecs (bnc#731981).
• cifs: Assume passwords are encoded according to
  iocharset (bnc#731035).
• scsi_dh: Check queuedata pointer before proceeding
  (bnc#714744).
• netback: use correct index for invalidation in
  netbk_tx_check_mop().
• ACPI video: introduce module parameter
  video.use_bios_initial_backlight (bnc#731229).
• SUNRPC: prevent task_cleanup running on freed xprt
  (bnc#709671).
• add device entry for Broadcom Valentine combo card
  (bnc#722429).
• quota: Fix WARN_ON in lookup_one_len (bnc#728626).
• Update Xen patches to 2.6.32.48.
• pv-on-hvm/kexec: add xs_reset_watches to shutdown
  watches from old kernel (bnc#694863).
• x86: undo_limit_pages() must reset page count.
• mm/vmstat.c: cache align vm_stat (bnc#729721).
• s390/ccwgroup: fix uevent vs dev attrs race
  (bnc#659101,LTC#69028).
• Warn on pagecache limit usage (FATE309111).
• SCSI: st: fix race in st_scsi_execute_end
  (bnc#720536).
• ACPI: introduce "acpi_rsdp=" parameter for kdump
  (bnc#717263).
• elousb: Limit the workaround warning to one per
  error, control workaround activity (bnc#719916).
• SCSI: libiscsi: reset cmd timer if cmds are making
  progress (bnc#691440).
• SCSI: fix crash in scsi_dispatch_cmd() (bnc#724989).
• NFS/sunrpc: do not use a credential with extra groups
  (bnc#725878).
• s390/qdio: EQBS retry after CCQ 96
  (bnc#725453,LTC#76117).
• fcoe: Reduce max_sectors to 1024 (bnc#695898).
• apparmor: return -ENOENT when there is no profile for
  a hat (bnc#725502).
• sched, cgroups: disallow attaching kthreadd
  (bnc#721840).
• nfs: Check validity of cl_rpcclient in
  nfs_server_list_show (bnc#717884).
• x86, vt-d: enable x2apic opt out (disabling x2apic
  through BIOS flag) (bnc#701183, fate#311989).
• block: Free queue resources at blk_release_queue()
  (bnc#723815).
• ALSA: hda - Add post_suspend patch ops (bnc#724800).
• ALSA: hda - Allow codec-specific set_power_state ops
  (bnc#724800).
• ALSA: hda - Add support for vref-out based mute LED
  control on IDT codecs (bnc#724800).
• scsi_dh_rdac : Add definitions for different RDAC
  operating modes (bnc#724365).
• scsi_dh_rdac : Detect the different RDAC operating
  modes (bnc#724365).
• scsi_dh_rdac : decide whether to send mode select
  based on operating mode (bnc#724365).
• scsi_dh_rdac: Use WWID from C8 page instead of
  Subsystem id from C4 page to identify storage (bnc#724365).
• vlan: Match underlying dev carrier on vlan add
  (bnc#722504).
• scsi_lib: pause between error retries (bnc#675127).
• xfs: use KM_NOFS for allocations during attribute
  list operations (bnc#721830).
• bootsplash: Do not crash when no fb is set
  (bnc#723542).
• cifs: do not allow cifs_iget to match inodes of the
  wrong type (bnc#711501).
• cifs: fix noserverino handling when 1 extensions are
  enabled (bnc#711501).
• cifs: reduce false positives with inode aliasing
  serverino autodisable (bnc#711501).
• parport_pc: release IO region properly if unsupported
  ITE887x card is found (bnc#721464).
• writeback: avoid unnecessary calculation of bdi dirty
  thresholds (bnc#721299).
• 1: Fix bogus it_blocksize in VIO iommu code
  (bnc#717690).
• ext4: Fix max file size and logical block counting of
  extent format file (bnc#706374).
• novfs: Unable to change password in the Novell Client
  for Linux (bnc#713229).
• xfs: add more ilock tracing.
• sched: move wakeup tracepoint above out_running
  (bnc#712002).
• config.conf: Build KMPs for the -trace flavor as well
  (fate#312759, bnc#712404, bnc#712405, bnc#721337).
• memsw: remove noswapaccount kernel parameter
  (bnc#719450).