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HistoryDec 02, 2016 - 4:14 p.m.

Security update for the Linux Kernel (important)


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

For the PowerPC64 a new "bigmem" flavor has been added to support big
Power machines. (FATE#319026)

The following security bugs were fixed:

  • CVE-2016-7042: The proc_keys_show function in security/keys/proc.c in
    the Linux kernel, when the GNU Compiler Collection (gcc) stack protector
    is enabled, uses an incorrect buffer size for certain timeout data,
    which allowed local users to cause a denial of service (stack memory
    corruption and panic) by reading the /proc/keys file (bnc#1004517).
  • CVE-2016-7097: The filesystem implementation in the Linux kernel
    preserves the setgid bit during a setxattr call, which allowed local
    users to gain group privileges by leveraging the existence of a setgid
    program with restrictions on execute permissions (bnc#995968).
  • CVE-2015-8956: The rfcomm_sock_bind function in
    net/bluetooth/rfcomm/sock.c in the Linux kernel allowed local users to
    obtain sensitive information or cause a denial of service (NULL pointer
    dereference) via vectors involving a bind system call on a Bluetooth
    RFCOMM socket (bnc#1003925).
  • CVE-2016-7117: Use-after-free vulnerability in the __sys_recvmmsg
    function in net/socket.c in the Linux kernel allowed remote attackers to
    execute arbitrary code via vectors involving a recvmmsg system call that
    is mishandled during error processing (bnc#1003077).
  • CVE-2016-0823: The pagemap_open function in fs/proc/task_mmu.c in the
    Linux kernel allowed local users to obtain sensitive physical-address
    information by reading a pagemap file, aka Android internal bug 25739721
  • CVE-2016-7425: The arcmsr_iop_message_xfer function in
    drivers/scsi/arcmsr/arcmsr_hba.c in the Linux kernel did not restrict a
    certain length field, which allowed local users to gain privileges or
    cause a denial of service (heap-based buffer overflow) via an
    ARCMSR_MESSAGE_WRITE_WQBUFFER control code (bnc#999932).
  • CVE-2016-3841: The IPv6 stack in the Linux kernel mishandled options
    data, which allowed local users to gain privileges or cause a denial of
    service (use-after-free and system crash) via a crafted sendmsg system
    call (bnc#992566).
  • CVE-2016-6828: The tcp_check_send_head function in include/net/tcp.h in
    the Linux kernel did not properly maintain certain SACK state after a
    failed data copy, which allowed local users to cause a denial of service
    (tcp_xmit_retransmit_queue use-after-free and system crash) via a
    crafted SACK option (bnc#994296).
  • CVE-2016-5696: net/ipv4/tcp_input.c in the Linux kernel did not properly
    determine the rate of challenge ACK segments, which made it easier for
    remote attackers to hijack TCP sessions via a blind in-window attack
  • CVE-2016-6480: Race condition in the ioctl_send_fib function in
    drivers/scsi/aacraid/commctrl.c in the Linux kernel allowed local users
    to cause a denial of service (out-of-bounds access or system crash) by
    changing a certain size value, aka a "double fetch" vulnerability
  • CVE-2016-4998: The IPT_SO_SET_REPLACE setsockopt implementation in the
    netfilter subsystem in the Linux kernel allowed local users to cause a
    denial of service (out-of-bounds read) or possibly obtain sensitive
    information from kernel heap memory by leveraging in-container root
    access to provide a crafted offset value that leads to crossing a
    ruleset blob boundary (bnc#986365).
  • CVE-2015-7513: arch/x86/kvm/x86.c in the Linux kernel did not reset the
    PIT counter values during state restoration, which allowed guest OS
    users to cause a denial of service (divide-by-zero error and host OS
    crash) via a zero value, related to the kvm_vm_ioctl_set_pit and
    kvm_vm_ioctl_set_pit2 functions (bnc#960689).
  • CVE-2013-4312: The Linux kernel allowed local users to bypass
    file-descriptor limits and cause a denial of service (memory
    consumption) by sending each descriptor over a UNIX socket before
    closing it, related to net/unix/af_unix.c and net/unix/garbage.c
    (bnc#839104 bsc#922947 bsc#968014).

The following non-security bugs were fixed:

  • ahci: Order SATA device IDs for codename Lewisburg (fate#319286).
  • ahci: Remove obsolete Intel Lewisburg SATA RAID device IDs (fate#319286).
  • alsa: hda - Add Intel Lewisburg device IDs Audio (fate#319286).
  • arch/powerpc: Remove duplicate/redundant Altivec entries (bsc#967716).
  • avoid dentry crash triggered by NFS (bsc#984194).
  • bigmem: Add switch to configure bigmem patches (bsc#928138,fate#319026).
  • blktap2: eliminate deadlock potential from shutdown path (bsc#909994).
  • blktap2: eliminate race from deferred work queue handling (bsc#911687).
  • bnx2x: fix lockdep splat (bsc#908684 FATE#317539).
  • bonding: always set recv_probe to bond_arp_rcv in arp monitor
  • bonding: fix bond_arp_rcv setting and arp validate desync state
  • btrfs: account for non-CoW’d blocks in btrfs_abort_transaction
  • btrfs: ensure that file descriptor used with subvol ioctls is a dir
  • cdc-acm: added sanity checking for probe() (bsc#993891).
  • config.conf: add bigmem flavour on ppc64
  • cpumask, nodemask: implement cpumask/nodemask_pr_args() (bnc1003866).
  • cxgb4: Set VPD size so we can read both VPD structures (bsc#976867).
  • dm space map metadata: fix sm_bootstrap_get_nr_blocks() (FATE#313903).
  • dm thin: fix race condition when destroying thin pool workqueue
  • drivers: hv: vmbus: avoid scheduling in interrupt context in
    vmbus_initiate_unload() (bnc#986337).
  • drivers: hv: vmbus: avoid wait_for_completion() on crash (bnc#986337).
  • drivers: hv: vmbus: do not loose HVMSG_TIMER_EXPIRED messages
  • drivers: hv: vmbus: do not send CHANNELMSG_UNLOAD on pre-Win2012R2 hosts
  • drivers: hv: vmbus: handle various crash scenarios (bnc#986337).
  • drivers: hv: vmbus: remove code duplication in message handling
  • drivers: hv: vss: run only on supported host versions (bnc#986337).
  • fs/cifs: cifs_get_root shouldn’t use path with tree name (bsc#963655,
  • fs/cifs: Compare prepaths when comparing superblocks (bsc#799133).
  • fs/cifs: Fix memory leaks in cifs_do_mount() (bsc#799133).
  • fs/cifs: Fix regression which breaks DFS mounting (bsc#799133).
  • fs/cifs: fix wrongly prefixed path to root (bsc#963655, bsc#979681)
  • fs/cifs: make share unaccessible at root level mountable (bsc#799133).
  • fs/cifs: Move check for prefix path to within cifs_get_root()
  • fs/select: add vmalloc fallback for select(2) (bsc#1000189).
  • hv: do not lose pending heartbeat vmbus packets (bnc#1006919).
  • i2c: i801: add Intel Lewisburg device IDs (fate#319286).
  • i40e: fix an uninitialized variable bug (bsc#909484 FATE#317397).
  • include/linux/mmdebug.h: should include linux/bug.h (bnc#971975 VM
    performance – git fixes).
  • increase CONFIG_NR_IRQS 512 -> 2048 reportedly irq error with multiple
    nvme and tg3 in the same machine is resolved by increasing
    CONFIG_NR_IRQS (bsc#998399)
  • introduce SIZE_MAX (bsc#1000189).
  • ipv6: replacing a rt6_info needs to purge possible propagated rt6_infos
    too (bsc#865783).
  • kabi: Import kabi files from 3.0.101-80
  • kabi-fix for flock_owner addition (bsc#998689).
  • kabi, unix: properly account for FDs passed over unix sockets
  • kaweth: fix firmware download (bsc#993890).
  • kaweth: fix oops upon failed memory allocation (bsc#993890).
  • kvm: x86: only channel 0 of the i8254 is linked to the HPET (bsc#960689).
  • kvm: x86: SYSENTER emulation is broken (bsc#994618).
  • libata: support the ata host which implements a queue depth less than 32
  • libfc: sanity check cpu number extracted from xid (bsc#988440).
  • lib/vsprintf: implement bitmap printing through ‘%*pb[l]’ (bnc#1003866).
  • lpfc: call lpfc_sli_validate_fcp_iocb() with the hbalock held
  • bigmem: make bigmem patches configurable (bsc#928138,fate#319026).
  • md: check command validity early in md_ioctl() (bsc#1004520).
  • md: Drop sending a change uevent when stopping (bsc#1003568).
  • md: fix problem when adding device to read-only array with bitmap
  • md: lockless I/O submission for RAID1 (bsc#982783).
  • md/raid10: always set reshape_safe when initializing reshape_position
  • md/raid10: Fix memory leak when raid10 reshape completes (fate#311379).
  • mm: fix sleeping function warning from __put_anon_vma (bnc#1005857).
  • mm/memory.c: actually remap enough memory (bnc#1005903).
  • mm: thp: fix SMP race condition between THP page fault and MADV_DONTNEED
    (VM Functionality, bnc#986445).
  • mm, vmscan: Do not wait for page writeback for GFP_NOFS allocations
  • Move patches that create ppc64-bigmem to the powerpc section. Add
    comments that outline the procedure and warn the unsuspecting.
  • move the call of __d_drop(anon) into __d_materialise_unique(dentry,
    anon) (bsc#984194).
  • mpt2sas, mpt3sas: Fix panic when aer correct error occurred (bsc#997708).
  • mshyperv: fix recognition of Hyper-V guest crash MSR’s (bnc#986337).
  • net: add pfmemalloc check in sk_add_backlog() (bnc#920016).
  • netback: fix flipping mode (bsc#996664).
  • netfilter: ipv4: defrag: set local_df flag on defragmented skb
  • netvsc: fix incorrect receive checksum offloading (bnc#1006917).
  • nfs4: reset states to use open_stateid when returning delegation
    voluntarily (bsc#1007944).
  • nfs: Do not disconnect open-owner on NFS4ERR_BAD_SEQID (bsc#989261).
  • nfs: Do not drop directory dentry which is in use (bsc#993127).
  • nfs: Do not write enable new pages while an invalidation is proceeding
  • nfs: Fix an LOCK/OPEN race when unlinking an open file (bsc#956514).
  • nfs: Fix a regression in the read() syscall (bsc#999584).
  • nfs: Fix races in nfs_revalidate_mapping (bsc#999584).
  • nfs: fix the handling of NFS_INO_INVALID_DATA flag in
    nfs_revalidate_mapping (bsc#999584).
  • nfs: Fix writeback performance issue on cache invalidation (bsc#999584).
  • nfs: Refresh open-owner id when server says SEQID is bad (bsc#989261).
  • nfsv4.1: Fix an NFSv4.1 state renewal regression (bnc#863873).
  • nfsv4: add flock_owner to open context (bnc#998689).
  • nfsv4: change nfs4_do_setattr to take an open_context instead of a
    nfs4_state (bnc#998689).
  • nfsv4: change nfs4_select_rw_stateid to take a lock_context inplace of
    lock_owner (bnc#998689).
  • nfsv4: do not check MAY_WRITE access bit in OPEN (bsc#985206).
  • nfsv4: enhance nfs4_copy_lock_stateid to use a flock stateid if there is
    one (bnc#998689).
  • nfsv4: fix broken patch relating to v4 read delegations (bsc#956514,
    bsc#989261, bsc#979595).
  • nfsv4: Fix range checking in __nfs4_get_acl_uncached and
    __nfs4_proc_set_acl (bsc#982218).
  • oom: print nodemask in the oom report (bnc#1003866).
  • pci: Add pci_set_vpd_size() to set VPD size (bsc#976867).
  • pciback: fix conf_space read/write overlap check.
  • pciback: return proper values during BAR sizing.
  • pci_ids: Add PCI device ID functions 3 and 4 for newer F15h models
  • pm / hibernate: Fix rtree_next_node() to avoid walking off list ends
  • powerpc/64: Fix incorrect return value from __copy_tofrom_user
  • powerpc: Add ability to build little endian kernels (bsc#967716).
  • powerpc: add kernel parameter iommu_alloc_quiet (bsc#994926).
  • powerpc: Avoid load of static chain register when calling nested
    functions through a pointer on 64bit (bsc#967716).
  • powerpc: blacklist fixes for unsupported subarchitectures ppc32 only:
    6e0fdf9af216 powerpc: fix typo ‘CONFIG_PMAC’ obscure hardware:
    f7e9e3583625 powerpc: Fix missing L2 cache size in
  • powerpc: Build fix for powerpc KVM (bsc#928138,fate#319026).
  • powerpc: Do not build assembly files with ABIv2 (bsc#967716).
  • powerpc: Do not use ELFv2 ABI to build the kernel (bsc#967716).
  • powerpc: dtc is required to build dtb files (bsc#967716).
  • powerpc: Fix 64 bit builds with binutils 2.24 (bsc#967716).
  • powerpc: Fix error when cross building TAGS & cscope (bsc#967716).
  • powerpc: Make the vdso32 also build big-endian (bsc#967716).
  • powerpc: Make VSID_BITS* dependency explicit (bsc#928138,fate#319026).
  • powerpc/mm: Add 64TB support (bsc#928138,fate#319026).
  • powerpc/mm: Change the swap encoding in pte (bsc#973203).
  • powerpc/mm: Convert virtual address to vpn (bsc#928138,fate#319026).
  • powerpc/mm: Fix hash computation function (bsc#928138,fate#319026).
  • powerpc/mm: Increase the slice range to 64TB (bsc#928138,fate#319026).
  • powerpc/mm: Make KERN_VIRT_SIZE not dependend on PGTABLE_RANGE
  • powerpc/mm: Make some of the PGTABLE_RANGE dependency explicit
  • powerpc/mm: Replace open coded CONTEXT_BITS value
  • powerpc/mm: Simplify hpte_decode (bsc#928138,fate#319026).
  • powerpc/mm: Update VSID allocation documentation
  • powerpc/mm: Use 32bit array for slb cache (bsc#928138,fate#319026).
  • powerpc/mm: Use hpt_va to compute virtual address
  • powerpc/mm: Use the required number of VSID bits in slbmte
  • powerpc: Move kdump default base address to half RMO size on 64bit
  • powerpc: Remove altivec fix for gcc versions before 4.0 (bsc#967716).
  • powerpc: Remove buggy 9-year-old test for binutils < 2.12.1 (bsc#967716).
  • powerpc: Rename USER_ESID_BITS* to ESID_BITS* (bsc#928138,fate#319026).
  • powerpc: Require gcc 4.0 on 64-bit (bsc#967716).
  • powerpc: Update kernel VSID range (bsc#928138,fate#319026).
  • ppp: defer netns reference release for ppp channel (bsc#980371).
  • qlcnic: fix a timeout loop (bsc#909350 FATE#317546)
  • random32: add prandom_u32_max (bsc#989152).
  • remove problematic preprocessor constructs (bsc#928138,fate#319026).
  • REVERT fs/cifs: fix wrongly prefixed path to root (bsc#963655,
  • rpm/ Bump x86 disk space requirement to 20GB Clamav tends
    to run out of space nowadays.
  • rpm/package-descriptions: add -bigmem description
  • s390/cio: fix accidental interrupt enabling during resume (bnc#1003677,
  • s390/dasd: fix hanging device after clear subchannel (bnc#994436,
  • s390/time: LPAR offset handling (bnc#1003677, LTC#146920).
  • s390/time: move PTFF definitions (bnc#1003677, LTC#146920).
  • sata: Adding Intel Lewisburg device IDs for SATA (fate#319286).
  • sched/core: Fix an SMP ordering race in try_to_wake_up() vs. schedule()
  • sched/core: Fix a race between try_to_wake_up() and a woken up task
  • sched: Fix possible divide by zero in avg_atom() calculation
  • scripts/bigmem-generate-ifdef-guard: auto-regen
  • scripts/bigmem-generate-ifdef-guard: Include this script to regenerate
  • scripts/bigmem-generate-ifdef-guard: make executable
  • scsi_dh_rdac: retry inquiry for UNIT ATTENTION (bsc#934760).
  • scsi: do not print ‘reservation conflict’ for TEST UNIT READY
  • scsi: ibmvfc: add FC Class 3 Error Recovery support (bsc#984992).
  • scsi: ibmvfc: Fix I/O hang when port is not mapped (bsc#971989)
  • scsi: ibmvfc: Set READ FCP_XFER_READY DISABLED bit in PRLI (bsc#984992).
  • scsi_scan: Send TEST UNIT READY to LUN0 before LUN scanning
  • scsi: zfcp: spin_lock_irqsave() is not nestable (bsc#1003677,LTC#147374).
  • Set CONFIG_DEBUG_INFO=y and CONFIG_DEBUG_INFO_REDUCED=n on all platforms
    The specfile adjusts the config if necessary, but a new version of requires the settings to be present in the repository.
  • sfc: on MC reset, clear PIO buffer linkage in TXQs (bsc#909618
  • sort hyperv patches properly in series.conf
  • sunrpc/cache: drop reference when sunrpc_cache_pipe_upcall() detects a
    race (bnc#803320).
  • tg3: Avoid NULL pointer dereference in tg3_io_error_detected()
    (bsc#908458 FATE#317507).
  • tmpfs: change final i_blocks BUG to WARNING (bsc#991923).
  • tty: Signal SIGHUP before hanging up ldisc (bnc#989764).
  • Update patches.xen/xen3-auto-arch-x86.diff (bsc#929141, a.o.).
  • usb: fix typo in wMaxPacketSize validation (bsc#991665).
  • usb: hub: Fix auto-remount of safely removed or ejected USB-3 devices
  • usb: hub: Fix unbalanced reference count/memory leak/deadlocks
  • usb: validate wMaxPacketValue entries in endpoint descriptors
  • vlan: do not deliver frames for unknown vlans to protocols (bsc#979514).
  • vlan: mask vlan prio bits (bsc#979514).
  • vmxnet3: Wake queue from reset work (bsc#999907).
  • x86, amd_nb: Clarify F15h, model 30h GART and L3 support (fate#321400).
  • x86/asm/traps: Disable tracing and kprobes in fixup_bad_iret and
    sync_regs (bsc#909077).
  • x86/cpu/amd: Set X86_FEATURE_EXTD_APICID for future processors
  • x86/gart: Check for GART support before accessing GART registers
  • x86/MCE/intel: Cleanup CMCI storm logic (bsc#929141).
  • xenbus: inspect the correct type in xenbus_dev_request_and_reply().
  • xen: x86/mm/pat, /dev/mem: Remove superfluous error message (bsc#974620).
  • xfs: Avoid grabbing ilock when file size is not changed (bsc#983535).
  • xfs: Silence warnings in xfs_vm_releasepage() (bnc#915183 bsc#987565).
  • zfcp: close window with unblocked rport during rport gone (bnc#1003677,
  • zfcp: fix D_ID field with actual value on tracing SAN responses
    (bnc#1003677, LTC#144312).
  • zfcp: fix ELS/GS request&response length for hardware data router
    (bnc#1003677, LTC#144308).
  • zfcp: fix payload trace length for SAN request&response (bnc#1003677,
  • zfcp: restore: Dont use 0 to indicate invalid LUN in rec trace
    (bnc#1003677, LTC#144312).
  • zfcp: restore tracing of handle for port and LUN with HBA records
    (bnc#1003677, LTC#144312).
  • zfcp: retain trace level for SCSI and HBA FSF response records
    (bnc#1003677, LTC#144312).
  • zfcp: trace full payload of all SAN records (req,resp,iels)
    (bnc#1003677, LTC#144312).
  • zfcp: trace on request for open and close of WKA port (bnc#1003677,