Security update for the Linux Kernel (important)

The SUSE Linux Enterprise 12 kernel was updated to 3.12.31 to receive
various security and bugfixes.

Security issues fixed: CVE-2014-9322: A local privilege escalation in the
x86_64 32bit compatibility signal handling was fixed, which could be used
by local attackers to crash the machine or execute code.

CVE-2014-9090: Various issues in LDT handling in 32bit compatibility mode
on the x86_64 platform were fixed, where local attackers could crash the
machine.

CVE-2014-8133: Insufficient validation of TLS register usage could leak
information from the kernel stack to userspace.

CVE-2014-7826: kernel/trace/trace_syscalls.c in the Linux kernel did not
properly handle private syscall numbers during use of the ftrace
subsystem, which allowed local users to gain privileges or cause a denial
of service (invalid pointer dereference) via a crafted application.

CVE-2014-3647: Nadav Amit reported that the KVM (Kernel Virtual Machine)
mishandled noncanonical addresses when emulating instructions that change
the rip (Instruction Pointer). A guest user with access to I/O or the MMIO
could use this flaw to cause a denial of service (system crash) of the
guest.

CVE-2014-3611: A race condition flaw was found in the way the Linux
kernel’s KVM subsystem handled PIT (Programmable Interval Timer)
emulation. A guest user who has access to the PIT I/O ports could use this
flaw to crash the host.

CVE-2014-3610: If the guest writes a noncanonical value to certain MSR
registers, KVM will write that value to the MSR in the host context and a
#GP will be raised leading to kernel panic. A privileged guest user could
have used this flaw to crash the host.

CVE-2014-7841: A remote attacker could have used a flaw in SCTP to crash
the system by sending a maliciously prepared SCTP packet in order to
trigger a NULL pointer dereference on the server.

CVE-2014-3673: The SCTP implementation in the Linux kernel allowed remote
attackers to cause a denial of service (system crash) via a malformed
ASCONF chunk, related to net/sctp/sm_make_chunk.c and
net/sctp/sm_statefuns.c.

CVE-2014-3185: Multiple buffer overflows in the command_port_read_callback
function in drivers/usb/serial/whiteheat.c in the Whiteheat USB Serial
Driver in the Linux kernel allowed physically proximate attackers to
execute arbitrary code or cause a denial of service (memory corruption and
system crash) via a crafted device that provides a large amount of (1)
EHCI or (2) XHCI data associated with a bulk response.

Bugs fixed: BTRFS:

• btrfs: fix race that makes btrfs_lookup_extent_info miss skinny extent
  items (bnc#904077).
• btrfs: fix invalid leaf slot access in btrfs_lookup_extent()
  (bnc#904077).
• btrfs: avoid returning -ENOMEM in convert_extent_bit() too early
  (bnc#902016).
• btrfs: make find_first_extent_bit be able to cache any state
  (bnc#902016).
• btrfs: deal with convert_extent_bit errors to avoid fs corruption
  (bnc#902016).
• btrfs: be aware of btree inode write errors to avoid fs corruption
  (bnc#899551).
• btrfs: add missing end_page_writeback on submit_extent_page failure
  (bnc#899551).
• btrfs: fix crash of btrfs_release_extent_buffer_page (bnc#899551).
• btrfs: ensure readers see new data after a clone operation (bnc#898234).
• btrfs: avoid visiting all extent items when cloning a range (bnc#898234).
• btrfs: fix clone to deal with holes when NO_HOLES feature is enabled
  (bnc#898234).
• btrfs: make fsync work after cloning into a file (bnc#898234).
• btrfs: fix use-after-free when cloning a trailing file hole (bnc#898234).
• btrfs: clone, don’t create invalid hole extent map (bnc#898234).
• btrfs: limit the path size in send to PATH_MAX (bnc#897770).
• btrfs: send, fix more issues related to directory renames (bnc#897770).
• btrfs: send, remove dead code from __get_cur_name_and_parent
  (bnc#897770).
• btrfs: send, account for orphan directories when building path strings
  (bnc#897770).
• btrfs: send, avoid unnecessary inode item lookup in the btree
  (bnc#897770).
• btrfs: send, fix incorrect ref access when using extrefs (bnc#897770).
• btrfs: send, build path string only once in send_hole (bnc#897770).
• btrfs: part 2, fix incremental send’s decision to delay a dir
  move/rename (bnc#897770).
• btrfs: fix incremental send’s decision to delay a dir move/rename
  (bnc#897770).
• btrfs: remove unnecessary inode generation lookup in send (bnc#897770).
• btrfs: avoid unnecessary utimes update in incremental send (bnc#897770).
• btrfs: fix send issuing outdated paths for utimes, chown and chmod
  (bnc#897770).
• btrfs: fix send attempting to rmdir non-empty directories (bnc#897770).
• btrfs: send, don’t send rmdir for same target multiple times
  (bnc#897770).
• btrfs: incremental send, fix invalid path after dir rename (bnc#897770).
• btrfs: fix assert screwup for the pending move stuff (bnc#897770).
• btrfs: make some tree searches in send.c more efficient (bnc#897770).
• btrfs: use right extent item position in send when finding extent clones
  (bnc#897770).
• btrfs: more send support for parent/child dir relationship inversion
  (bnc#897770).
• btrfs: fix send dealing with file renames and directory moves
  (bnc#897770).
• btrfs: add missing error check in incremental send (bnc#897770).
• btrfs: make send’s file extent item search more efficient (bnc#897770).
• btrfs: fix infinite path build loops in incremental send (bnc#897770).
• btrfs: send, don’t delay dir move if there’s a new parent inode
  (bnc#897770).
• btrfs: add helper btrfs_fdatawrite_range (bnc#902010).
• btrfs: correctly flush compressed data before/after direct IO
  (bnc#902010).
• btrfs: make inode.c:compress_file_range() return void (bnc#902010).
• btrfs: report error after failure inlining extent in compressed write
  path (bnc#902010).
• btrfs: don’t ignore compressed bio write errors (bnc#902010).
• btrfs: make inode.c:submit_compressed_extents() return void (bnc#902010).
• btrfs: process all async extents on compressed write failure
  (bnc#902010).
• btrfs: don’t leak pages and memory on compressed write error
  (bnc#902010).
• btrfs: fix hang on compressed write error (bnc#902010).
• btrfs: set page and mapping error on compressed write failure
  (bnc#902010).
• btrfs: fix kfree on list_head in btrfs_lookup_csums_range error cleanup
  (bnc#904115).

Hyper-V:

• hyperv: Fix a bug in netvsc_send().
• hyperv: Fix a bug in netvsc_start_xmit().
• drivers: hv: vmbus: Enable interrupt driven flow control.
• drivers: hv: vmbus: Properly protect calls to smp_processor_id().
• drivers: hv: vmbus: Cleanup hv_post_message().
• drivers: hv: vmbus: Cleanup vmbus_close_internal().
• drivers: hv: vmbus: Fix a bug in vmbus_open().
• drivers: hv: vmbus: Cleanup vmbus_establish_gpadl().
• drivers: hv: vmbus: Cleanup vmbus_teardown_gpadl().
• drivers: hv: vmbus: Cleanup vmbus_post_msg().
• storvsc: get rid of overly verbose warning messages.
• hyperv: NULL dereference on error.
• hyperv: Increase the buffer length for netvsc_channel_cb().

zSeries / S390:

• s390: pass march flag to assembly files as well (bnc#903279, LTC#118177).
• kernel: reduce function tracer overhead (bnc#903279, LTC#118177).
• SUNRPC: Handle EPIPE in xprt_connect_status (bnc#901090).
• SUNRPC: Ensure that we handle ENOBUFS errors correctly (bnc#901090).
• SUNRPC: Ensure call_connect_status() deals correctly with SOFTCONN tasks
  (bnc#901090).
• SUNRPC: Ensure that call_connect times out correctly (bnc#901090).
• SUNRPC: Handle connect errors ECONNABORTED and EHOSTUNREACH (bnc#901090).
• SUNRPC: Ensure xprt_connect_status handles all potential connection
  errors (bnc#901090).
• SUNRPC: call_connect_status should recheck bind and connect status on
  error (bnc#901090).

kGraft:

• kgr: force patching process to succeed (fate#313296).
• kgr: usb-storage, mark kthread safe (fate#313296 bnc#899908).
• Refresh patches.suse/kgr-0039-kgr-fix-ugly-race.patch. Fix few bugs, and
  also races (immutable vs mark_processes vs other threads).
• kgr: always use locked bit ops for thread_info->flags (fate#313296).
• kgr: lower the workqueue scheduling timeout (fate#313296 bnc#905087).
• kgr: mark even more kthreads (fate#313296 bnc#904871).
• rpm/kernel-binary.spec.in: Provide name-version-release for kgraft
  packages (bnc#901925)

Other:

• NFSv4: test SECINFO RPC_AUTH_GSS pseudoflavors for support (bnc#905758).

• Enable cmac(aes) and cmac(3des_ede) for FIPS mode (bnc#905296
  bnc#905772).

• scsi_dh_alua: disable ALUA handling for non-disk devices (bnc#876633).

• powerpc/vphn: NUMA node code expects big-endian (bsc#900126).

• net: fix checksum features handling in netif_skb_features() (bnc#891259).

• be2net: Fix invocation of be_close() after be_clear() (bnc#895468).

• PCI: pciehp: Clear Data Link Layer State Changed during init
  (bnc#898297).

• PCI: pciehp: Use symbolic constants, not hard-coded bitmask (bnc#898297).

• PCI: pciehp: Use link change notifications for hot-plug and removal
  (bnc#898297).

• PCI: pciehp: Make check_link_active() non-static (bnc#898297).

• PCI: pciehp: Enable link state change notifications (bnc#898297).

• ALSA: hda - Treat zero connection as non-error (bnc#902898).

• bcache: add mutex lock for bch_is_open (bnc#902893).

• futex: Fix a race condition between REQUEUE_PI and task death (bcn
  #851603 (futex scalability series)).

• Linux 3.12.31 (bnc#895983 bnc#897912).

• futex: Ensure get_futex_key_refs() always implies a barrier (bcn #851603
  (futex scalability series)).

• usbback: don’t access request fields in shared ring more than once.

• Update Xen patches to 3.12.30.

• locking/rwsem: Avoid double checking before try acquiring write lock
  (Locking scalability.).

• zcrypt: toleration of new crypto adapter hardware (bnc#894057,
  LTC#117041).

• zcrypt: support for extended number of ap domains (bnc#894057,
  LTC#117041).

• kABI: protect linux/fs.h include in mm/internal.h.

• Linux 3.12.30 (FATE#315482 bnc#862957 bnc#863526 bnc#870498).

• Update patches.fixes/xfs-mark-all-internal-workqueues-as-freezable.patch
  (bnc#899785).

• xfs: mark all internal workqueues as freezable.

• drm/i915: Move DP port disable to post_disable for pch platforms
  (bnc#899787).

• pagecachelimit: reduce lru_lock congestion for heavy parallel reclaim
  fix (bnc#895680).

• Linux 3.12.29 (bnc#879255 bnc#880892 bnc#887046 bnc#887418 bnc#891619
  bnc#892612 bnc#892650 bnc#897101).

• iommu/vt-d: Work around broken RMRR firmware entries (bnc#892860).

• iommu/vt-d: Store bus information in RMRR PCI device path (bnc#892860).

• iommu/vt-d: Only remove domain when device is removed (bnc#883139).

• driver core: Add BUS_NOTIFY_REMOVED_DEVICE event (bnc#883139).

• Update config files: Re-enable CONFIG_FUNCTION_PROFILER (bnc#899489)
  Option FUNCTION_PROFILER was enabled in debug and trace kernels so far,
  but it was accidentally disabled before tracing features were merged
  into the default kernel and the trace flavor was discarded. So all
  kernels are missing the feature now. Re-enable it.

• xfs: xlog_cil_force_lsn doesn’t always wait correctly.

• scsi: clear ‘host_scribble’ upon successful abort (bnc#894863).

• module: warn if module init + probe takes long (bnc#889297 bnc#877622
  bnc#889295 bnc#893454).

• mm, THP: don’t hold mmap_sem in khugepaged when allocating THP
  (bnc#880767, VM Performance).

• pagecache_limit: batch large nr_to_scan targets (bnc#895221).

• iommu/vt-d: Check return value of acpi_bus_get_device() (bnc#903307).

• rpm/kernel-binary.spec.in: Fix including the secure boot cert in
  /etc/uefi/certs

• sched: Reduce contention in update_cfs_rq_blocked_load() (Scheduler/core
  performance).

• x86: use optimized ioresource lookup in ioremap function (Boot time
  optimisations (bnc#895387)).

• x86: optimize resource lookups for ioremap (Boot time
  optimisations (bnc#895387)).

• usb: Do not re-read descriptors for wired devices in
  usb_authorize_device() (bnc#904354).

• netxen: Fix link event handling (bnc#873228).

• x86, cpu: Detect more TLB configuration -xen (TLB Performance).

• x86/mm: Fix RCU splat from new TLB tracepoints (TLB Performance).

• x86/mm: Set TLB flush tunable to sane value (33) (TLB Performance).

• x86/mm: New tunable for single vs full TLB flush (TLB Performance).

• x86/mm: Add tracepoints for TLB flushes (TLB Performance).

• x86/mm: Unify remote INVLPG code (TLB Performance).

• x86/mm: Fix missed global TLB flush stat (TLB Performance).

• x86/mm: Rip out complicated, out-of-date, buggy TLB flushing (TLB
  Performance).

• x86, cpu: Detect more TLB configuration (TLB Performance).

• mm, x86: Revisit tlb_flushall_shift tuning for page flushes except on
  IvyBridge (TLB Performance).

• x86/mm: Clean up the TLB flushing code (TLB Performance).

• mm: free compound page with correct order (VM Functionality).

• bnx2x: Utilize FW 7.10.51 (bnc#887382).

• bnx2x: Remove unnecessary internal mem config (bnc#887382).

• rtnetlink: fix oops in rtnl_link_get_slave_info_data_size (bnc#901774).

• dm: do not call dm_sync_table() when creating new devices (bnc#901809).

• [media] uvc: Fix destruction order in uvc_delete() (bnc#897736).

• uas: replace WARN_ON_ONCE() with lockdep_assert_held() (FATE#315595).

• cxgb4/cxgb4vf: Add Devicde ID for two more adapter (bsc#903999).

• cxgb4/cxgb4vf: Add device ID for new adapter and remove for dbg adapter
  (bsc#903999).

• cxgb4: Adds device ID for few more Chelsio T4 Adapters (bsc#903999).

• cxgb4: Check if rx checksum offload is enabled, while reading hardware
  calculated checksum (bsc#903999).

• xen-pciback: drop SR-IOV VFs when PF driver unloads (bsc#901839).

This update also includes fixes contained in the Linux 3.12.stable release
series, not seperately listed here.