Security update for the Linux Kernel (important)

The SUSE Linux Enterprise 11 SP4 Realtime kernel was updated to receive
various security and bugfixes.

Following security bugs were fixed:

• CVE-2015-7509: Mounting a prepared ext2 filesystem as ext4 could lead to
  a local denial of service (crash) (bsc#956709).
• CVE-2015-7799: The slhc_init function in drivers/net/slip/slhc.c in the
  Linux kernel did not ensure that certain slot numbers are valid, which
  allowed local users to cause a denial of service (NULL pointer
  dereference and system crash) via a crafted PPPIOCSMAXCID ioctl call
  (bnc#949936).
• CVE-2015-8104: The KVM subsystem in the Linux kernel allowed guest OS
  users to cause a denial of service (host OS panic or hang) by triggering
  many #DB (aka Debug) exceptions, related to svm.c (bnc#954404).
• CVE-2015-5307: The KVM subsystem in the Linux kernel allowed guest OS
  users to cause a denial of service (host OS panic or hang) by triggering
  many #AC (aka Alignment Check) exceptions, related to svm.c and vmx.c
  (bnc#953527).
• CVE-2015-7990: RDS: Verify the underlying transport exists before
  creating a connection, preventing possible DoS (bsc#952384).
• CVE-2015-5157: arch/x86/entry/entry_64.S in the Linux kernel on the
  x86_64 platform mishandled IRET faults in processing NMIs that
  occurred during userspace execution, which might allow local users to
  gain privileges by triggering an NMI (bnc#937969 937970 938706 939207).
• CVE-2015-7872: The key_gc_unused_keys function in security/keys/gc.c in
  the Linux kernel allowed local users to cause a denial of service (OOPS)
  via crafted keyctl commands (bnc#951440).
• CVE-2015-8215: net/ipv6/addrconf.c in the IPv6 stack in the Linux kernel
  did not validate attempted changes to the MTU value, which allowed
  context-dependent attackers to cause a denial of service (packet loss)
  via a value that is (1) smaller than the minimum compliant value or (2)
  larger than the MTU of an interface, as demonstrated by a Router
  Advertisement (RA) message that is not validated by a daemon, a
  different vulnerability than CVE-2015-0272. NOTE: the scope of
  CVE-2015-0272 is limited to the NetworkManager product. (bnc#955354).
• CVE-2015-6937: The __rds_conn_create function in net/rds/connection.c in
  the Linux kernel allowed local users to cause a denial of service (NULL
  pointer dereference and system crash) or possibly have unspecified
  other impact by using a socket that was not properly bound (bnc#945825).

The following non-security bugs were fixed:

• af_xhci: avoid path quiesce of severed path in shutdown() (bnc#946214,
  LTC#131684).
• ahci: Add Device ID for Intel Sunrise Point PCH (bsc#953799).
• alsa: hda - Disable 64bit address for Creative HDA controllers
  (bnc#814440).
• blktap: also call blkif_disconnect() when frontend switched to closed
  (bsc#952976).
• blktap: refine mm tracking (bsc#952976).
• cachefiles: Avoid deadlocks with fs freezing (bsc#935123).
• dm: do not start current request if it would’ve merged with the previous
  (bsc#904348).
• dm: impose configurable deadline for dm_request_fn’s merge heuristic
  (bsc#904348).
• dm-snap: avoid deadock on s->lock when a read is split (bsc#939826).
• dm sysfs: introduce ability to add writable attributes (bsc#904348).
• drivers: hv: do not do hypercalls when hypercall_page is NULL.
• drivers: hv: kvp: move poll_channel() to hyperv_vmbus.h.
• drivers: hv: util: move kvp/vss function declarations to hyperv_vmbus.h.
• drivers: hv: vmbus: add special crash handler (bnc#930770).
• drivers: hv: vmbus: add special kexec handler.
• drivers: hv: vmbus: Get rid of some unused definitions.
• drivers: hv: vmbus: Implement the protocol for tearing down vmbus state.
• drivers: hv: vmbus: kill tasklets on module unload.
• drivers: hv: vmbus: prefer "die" notification chain to ‘panic’.
• drivers: hv: vmbus: remove hv_synic_free_cpu() call from
  hv_synic_cleanup().
• drivers: hv: vmbus: unregister panic notifier on module unload.
• driver: Vmxnet3: Fix ethtool -S to return correct rx queue stats
  (bsc#950750).
• drm/i915: add hotplug activation period to hotplug update mask
  (bsc#953980).
• drm/i915: Avoid race of intel_crt_detect_hotplug() with HPD interrupt,
  v2 (bsc#942938).
• drm/i915: Fix DDC probe for passive adapters (bsc#900610, fdo#85924).
• fix lpfc_send_rscn_event allocation size claims bnc#935757
• fs: Avoid deadlocks of fsync_bdev() and fs freezing (bsc#935123).
• fs: Fix deadlocks between sync and fs freezing (bsc#935123).
• hugetlb: simplify migrate_huge_page() (bnc#947957, VM Functionality).
• hwpoison, hugetlb: lock_page/unlock_page does not match for handling a
  free hugepage (bnc#947957, VM Functionality).
• IB/srp: Avoid skipping srp_reset_host() after a transport error
  (bsc#904965).
• IB/srp: Fix a sporadic crash triggered by cable pulling (bsc#904965).
• Import SP4-RT GA kabi files
• ipr: Fix incorrect trace indexing (bsc#940913).
• ipr: Fix invalid array indexing for HRRQ (bsc#940913).
• ipv6: fix tunnel error handling (bsc#952579).
• ipvs: drop first packet to dead server (bsc#946078).
• ipvs: Fix reuse connection if real server is dead (bnc#945827).
• kernel: correct uc_sigmask of the compat signal frame (bnc#946214,
  LTC#130124).
• kernel: fix incorrect use of DIAG44 in continue_trylock_relax()
  (bnc#946214, LTC#132100).
• kexec: Fix race between panic() and crash_kexec() called directly
  (bnc#937444).
• keys: Fix race between key destruction and finding a keyring by name
  (bsc#951440).
• ktime: add ktime_after and ktime_before helpe (bsc#904348).
• lib/string.c: introduce memchr_inv() (bnc#930788).
• lpfc: Fix cq_id masking problem (bsc#944677).
• macvlan: Support bonding events bsc#948521
• Make sure XPRT_CONNECTING gets cleared when needed (bsc#946309).
• memory-failure: do code refactor of soft_offline_page() (bnc#947957, VM
  Functionality).
• memory-failure: fix an error of mce_bad_pages statistics (bnc#947957, VM
  Functionality).
• memory-failure: use num_poisoned_pages instead of mce_bad_pages
  (bnc#947957, VM Functionality).
• memory-hotplug: update mce_bad_pages when removing the memory
  (bnc#947957, VM Functionality).
• mm: exclude reserved pages from dirtyable memory 32b fix (bnc#940017,
  bnc#949298).
• mm: fix GFP_THISNODE callers and clarify (bsc#954950, VM Functionality).
• mm/memory-failure.c: fix wrong num_poisoned_pages in handling memory
  error on thp (bnc#947957, VM Functionality).
• mm/memory-failure.c: recheck PageHuge() after hugetlb page migrate
  successfully (bnc#947957, VM Functionality).
• mm/migrate.c: pair unlock_page() and lock_page() when migrating huge
  pages (bnc#947957, VM Functionality).
• mm: remove GFP_THISNODE (bsc#954950, VM Functionality).
• mm: sl[au]b: add knowledge of PFMEMALLOC reserve pages (Swap over NFS
  (fate#304949)).
• Modified -rt patches: 343 of 434, noise elided.
• net/core: Add VF link state control policy (bsc#950298).
• netfilter: xt_recent: fix namespace destroy path (bsc#879378).
• NFSv4: Fix two infinite loops in the mount code (bsc#954628).
• panic/x86: Allow cpus to save registers even if they (bnc#940946).
• panic/x86: Fix re-entrance problem due to panic on (bnc#937444).
• pci: Add dev_flags bit to access VPD through function 0 (bnc#943786).
• pci: Add VPD function 0 quirk for Intel Ethernet devices (bnc#943786).
• pci: Clear NumVFs when disabling SR-IOV in sriov_init() (bnc#952084).
• pci: delay configuration of SRIOV capability (bnc#952084).
• pci: Refresh First VF Offset and VF Stride when updating NumVFs
  (bnc#952084).
• pci: set pci sriov page size before reading SRIOV BAR (bnc#952084).
• pci: Update NumVFs register when disabling SR-IOV (bnc#952084).
• pktgen: clean up ktime_t helpers (bsc#904348).
• qla2xxx: do not clear slot in outstanding cmd array (bsc#944993).
• qla2xxx: Do not reset adapter if SRB handle is in range (bsc#944993).
• qla2xxx: Remove decrement of sp reference count in abort handler
  (bsc#944993).
• qla2xxx: Remove unavailable firmware files (bsc#921081).
• qlge: Fix qlge_update_hw_vlan_features to handle if interface is down
  (bsc#930835).
• quota: Fix deadlock with suspend and quotas (bsc#935123).
• rcu: Eliminate deadlock between CPU hotplug and expedited grace periods
  (bsc#949706).
• Refresh patches.xen/1282-usbback-limit-copying.patch (bsc#941202).
• rtc: cmos: Cancel alarm timer if alarm time is equal to now+1 seconds
  (bsc#930145).
• rtnetlink: Fix VF IFLA policy (bsc#950298).
• rtnetlink: fix VF info size (bsc#950298).
• s390/dasd: fix disconnected device with valid path mask (bnc#946214,
  LTC#132707).
• s390/dasd: fix invalid PAV assignment after suspend/resume (bnc#946214,
  LTC#132706).
• s390/dasd: fix list_del corruption after lcu changes (bnc#954984,
  LTC#133077).
• s390/pci: handle events for unused functions (bnc#946214, LTC#130628).
• s390/pci: improve handling of hotplug event 0x301 (bnc#946214,
  LTC#130628).
• s390/pci: improve state check when processing hotplug events
  (bnc#946214, LTC#130628).
• sched/core: Fix task and run queue sched_info::run_delay inconsistencies
  (bnc#949100).
• scsi: hosts: update to use ida_simple for host_no (bsc#939926)
• sg: fix read() error reporting (bsc#926774).
• sunrpc: refactor rpcauth_checkverf error returns (bsc#955673).
• Update patches.fixes/fanotify-fix-deadlock-during-thread-exit.patch
  (bsc#935053, bsc#926709). Add bug reference.
• usbback: correct copy length for partial transfers (bsc#941202).
• usbvision fix overflow of interfaces array (bnc#950998).
• usb: xhci: apply XHCI_AVOID_BEI quirk to all Intel xHCI controllers
  (bnc#944989).
• veth: extend device features (bsc#879381).
• vfs: Provide function to get superblock and wait for it to thaw
  (bsc#935123).
• vmxnet3: adjust ring sizes when interface is down (bsc#950750).
• vmxnet3: fix ethtool ring buffer size setting (bsc#950750).
• writeback: Skip writeback for frozen filesystem (bsc#935123).
• x86/evtchn: make use of PHYSDEVOP_map_pirq.
• x86: mm: drop TLB flush from ptep_set_access_flags (bsc#948330).
• x86: mm: only do a local tlb flush in ptep_set_access_flags()
  (bsc#948330).
• x86, pageattr: Prevent overflow in slow_virt_to_phys() for X86_PAE
  (fate#317533, bnc#937256).
• xen: x86, pageattr: Prevent overflow in slow_virt_to_phys() for X86_PAE
  (fate#317533, bnc#937256).
• xfs: add background scanning to clear eofblocks inodes (bnc#930788).
• xfs: add EOFBLOCKS inode tagging/untagging (bnc#930788).
• xfs: add inode id filtering to eofblocks scan (bnc#930788).
• xfs: add minimum file size filtering to eofblocks scan (bnc#930788).
• xfs: add XFS_IOC_FREE_EOFBLOCKS ioctl (bnc#930788).
• xfs: create function to scan and clear EOFBLOCKS inodes (bnc#930788).
• xfs: create helper to check whether to free eofblocks on inode
  (bnc#930788).
• xfs: Fix lost direct IO write in the last block (bsc#949744).
• xfs: Fix softlockup in xfs_inode_ag_walk() (bsc#948347).
• xfs: introduce a common helper xfs_icluster_size_fsb (bsc#932805).
• xfs: make xfs_free_eofblocks() non-static, return EAGAIN on trylock
  failure (bnc#930788).
• xfs: support a tag-based inode_ag_iterator (bnc#930788).
• xfs: support multiple inode id filtering in eofblocks scan (bnc#930788).
• xfs: use xfs_icluster_size_fsb in xfs_bulkstat (bsc#932805).
• xfs: use xfs_icluster_size_fsb in xfs_ialloc_inode_init (bsc#932805).
• xfs: use xfs_icluster_size_fsb in xfs_ifree_cluster (bsc#932805).
• xfs: use xfs_icluster_size_fsb in xfs_imap (bsc#932805).
• xhci: Add spurious wakeup quirk for LynxPoint-LP controllers
  (bnc#949981).
• xhci: Calculate old endpoints correctly on device reset (bnc#944831).
• xhci: change xhci 1.0 only restrictions to support xhci 1.1 (bnc#949502).
• xhci: fix isoc endpoint dequeue from advancing too far on transaction
  error (bnc#944837).
• xhci: For streams the css flag most be read from the stream-ctx on ep
  stop (bnc#945691).
• xhci: silence TD warning (bnc#939955).
• xhci: use uninterruptible sleep for waiting for internal operations
  (bnc#939955).