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HistoryDec 09, 2016 - 6:11 p.m.

Security update for the Linux Kernel (important)


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

This feature was added:

  • Support for the 2017 Intel Purley platform.

The following security bugs were fixed:

  • CVE-2016-5195: A local privilege escalation using MAP_PRIVATE was fixed,
    which is reportedly exploited in the wild (bsc#1004418).
  • 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-2016-3841: 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: Use after free in tcp_xmit_retransmit_queue or other tcp_
    functions (bsc#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
    man-in-the-middle attackers to hijack TCP sessions via a blind in-window
    attack (bnc#989152)
  • 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-2016-4997: The compat IPT_SO_SET_REPLACE and IP6T_SO_SET_REPLACE
    setsockopt implementations in the netfilter subsystem in the Linux
    kernel allowed local users to gain privileges or cause a denial of
    service (memory corruption) by leveraging in-container root access to
    provide a crafted offset value that triggers an unintended decrement
  • 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 closing it,
    related to net/unix/af_unix.c and net/unix/garbage.c (bnc#839104).
  • CVE-2016-7425: A buffer overflow in the Linux Kernel in
    arcmsr_iop_message_xfer() could have caused kernel heap corruption and
    arbitraty kernel code execution (bsc#999932)

The following non-security bugs were fixed:

  • ahci: Order SATA device IDs for codename Lewisburg.
  • AHCI: Remove obsolete Intel Lewisburg SATA RAID device IDs.
  • ALSA: hda - Add Intel Lewisburg device IDs Audio.
  • avoid dentry crash triggered by NFS (bsc#984194).
  • blktap2: eliminate deadlock potential from shutdown path (bsc#909994).
  • blktap2: eliminate race from deferred work queue handling (bsc#911687).
  • 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).
  • cxgb4: Set VPD size so we can read both VPD structures (bsc#976867).
  • Delete patches.fixes/net-fix-crash-due-to-wrong-dev-in-calling.patch.
  • fs/cifs: fix wrongly prefixed path to root (bsc#963655, bsc#979681)
  • fs/select: add vmalloc fallback for select(2) (bsc#1000189).
  • fs/select: introduce SIZE_MAX (bsc#1000189).
  • i2c: i801: add Intel Lewisburg device IDs.
  • 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)
  • 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: SYSENTER emulation is broken (bsc#994618).
  • libfc: sanity check cpu number extracted from xid (bsc#988440).
  • lpfc: call lpfc_sli_validate_fcp_iocb() with the hbalock held
  • md: lockless I/O submission for RAID1 (bsc#982783).
  • mm: thp: fix SMP race condition between THP page fault and MADV_DONTNEED
    (VM Functionality, bnc#986445).
  • mpt2sas, mpt3sas: Fix panic when aer correct error occurred (bsc#997708).
  • net: add pfmemalloc check in sk_add_backlog() (bnc#920016).
  • netback: fix flipping mode (bsc#996664).
  • nfs: Do not drop directory dentry which is in use (bsc#993127).
  • nfs: Don’t disconnect open-owner on NFS4ERR_BAD_SEQID (bsc#989261).
  • nfs: Don’t write enable new pages while an invalidation is proceeding
  • 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: do not check MAY_WRITE access bit in OPEN (bsc#985206).
  • 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).
  • pci: Add pci_set_vpd_size() to set VPD size (bsc#976867).
  • pciback: fix conf_space read/write overlap check.
  • powerpc: add kernel parameter iommu_alloc_quiet (bsc#994926).
  • ppp: defer netns reference release for ppp channel (bsc#980371).
  • random32: add prandom_u32_max (bsc#989152).
  • rpm/ Bump x86 disk space requirement to 20GB Clamav tends
    to run out of space nowadays.
  • s390/dasd: fix hanging device after clear subchannel (bnc#994436).
  • sata: Adding Intel Lewisburg device IDs for SATA.
  • 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
  • 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
  • tmpfs: change final i_blocks BUG to WARNING (bsc#991923).
  • Update
    are.patch (add bsc#732582 reference).
  • USB: fix typo in wMaxPacketSize validation (bsc#991665).
  • USB: validate wMaxPacketValue entries in endpoint descriptors
  • vlan: don’t deliver frames for unknown vlans to protocols (bsc#979514).
  • vlan: mask vlan prio bits (bsc#979514).
  • 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).