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[Launchpad Bug Tracker <1698799@xxxxxxxxxxxxxxxxxx>]

This bug was fixed in the package linux - 4.4.0-87.110

---------------
linux (4.4.0-87.110) xenial; urgency=low

  * linux: 4.4.0-87.110 -proposed tracker (LP: #1704982)

  * CVE-2017-1000364
    - mm/mmap.c: do not blow on PROT_NONE MAP_FIXED holes in the stack
    - mm/mmap.c: expand_downwards: don't require the gap if !vm_prev

  * CIFS causes oops (LP: #1704857)
    - CIFS: Fix null pointer deref during read resp processing
    - CIFS: Fix some return values in case of error in 'crypt_message'

 -- Kleber Sacilotto de Souza <kleber.souza@xxxxxxxxxxxxx>  Tue, 18 Jul
2017 13:58:43 +0200

** Changed in: linux (Ubuntu Xenial)
       Status: Fix Committed => Fix Released

** CVE added: https://cve.mitre.org/cgi-
bin/cvename.cgi?name=2017-1000364

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https://bugs.launchpad.net/bugs/1698799

Title:
  Xenial update to 4.4.72 stable release

Status in linux package in Ubuntu:
  Invalid
Status in linux source package in Xenial:
  Fix Released

Bug description:
  SRU Justification

      Impact:
         The upstream process for stable tree updates is quite similar
         in scope to the Ubuntu SRU process, e.g., each patch has to
         demonstrably fix a bug, and each patch is vetted by upstream
         by originating either directly from a mainline/stable Linux tree or
         a minimally backported form of that patch. The 4.4.72 upstream stable
         patch set is now available. It should be included in the Ubuntu
         kernel as well.

         git://git.kernel.org/

      TEST CASE: TBD

  The following patches from the 4.4.72 stable release shall be applied:
  * bnx2x: Fix Multi-Cos
  * ipv6: xfrm: Handle errors reported by xfrm6_find_1stfragopt()
  * cxgb4: avoid enabling napi twice to the same queue
  * tcp: disallow cwnd undo when switching congestion control
  * vxlan: fix use-after-free on deletion
  * ipv6: Fix leak in ipv6_gso_segment().
  * net: ping: do not abuse udp_poll()
  * net: ethoc: enable NAPI before poll may be scheduled
  * net: bridge: start hello timer only if device is up
  * sparc64: mm: fix copy_tsb to correctly copy huge page TSBs
  * sparc: Machine description indices can vary
  * sparc64: reset mm cpumask after wrap
  * sparc64: combine activate_mm and switch_mm
  * sparc64: redefine first version
  * sparc64: add per-cpu mm of secondary contexts
  * sparc64: new context wrap
  * sparc64: delete old wrap code
  * arch/sparc: support NR_CPUS = 4096
  * serial: ifx6x60: fix use-after-free on module unload
  * ptrace: Properly initialize ptracer_cred on fork
  * KEYS: fix dereferencing NULL payload with nonzero length
  * KEYS: fix freeing uninitialized memory in key_update()
  * crypto: gcm - wait for crypto op not signal safe
  * drm/amdgpu/ci: disable mclk switching for high refresh rates (v2)
  * nfsd4: fix null dereference on replay
  * nfsd: Fix up the "supattr_exclcreat" attributes
  * kvm: async_pf: fix rcu_irq_enter() with irqs enabled
  * KVM: cpuid: Fix read/write out-of-bounds vulnerability in cpuid emulation
  * arm: KVM: Allow unaligned accesses at HYP
  * KVM: async_pf: avoid async pf injection when in guest mode
  * dmaengine: usb-dmac: Fix DMAOR AE bit definition
  * dmaengine: ep93xx: Always start from BASE0
  * xen/privcmd: Support correctly 64KB page granularity when mapping memory
  * xen-netfront: do not cast grant table reference to signed short
  * xen-netfront: cast grant table reference first to type int
  * ext4: fix SEEK_HOLE
  * ext4: keep existing extra fields when inode expands
  * ext4: fix fdatasync(2) after extent manipulation operations
  * usb: gadget: f_mass_storage: Serialize wake and sleep execution
  * usb: chipidea: udc: fix NULL pointer dereference if udc_start failed
  * usb: chipidea: debug: check before accessing ci_role
  * staging/lustre/lov: remove set_fs() call from lov_getstripe()
  * iio: light: ltr501 Fix interchanged als/ps register field
  * iio: proximity: as3935: fix AS3935_INT mask
  * drivers: char: random: add get_random_long()
  * random: properly align get_random_int_hash
  * stackprotector: Increase the per-task stack canary's random range from 32
    bits to 64 bits on 64-bit platforms
  * cpufreq: cpufreq_register_driver() should return -ENODEV if init fails
  * target: Re-add check to reject control WRITEs with overflow data
  * drm/msm: Expose our reservation object when exporting a dmabuf.
  * Input: elantech - add Fujitsu Lifebook E546/E557 to force crc_enabled
  * cpuset: consider dying css as offline
  * fs: add i_blocksize()
  * ufs: restore proper tail allocation
  * fix ufs_isblockset()
  * ufs: restore maintaining ->i_blocks
  * ufs: set correct ->s_maxsize
  * ufs_extend_tail(): fix the braino in calling conventions of
    ufs_new_fragments()
  * ufs_getfrag_block(): we only grab ->truncate_mutex on block creation path
  * cxl: Fix error path on bad ioctl
  * btrfs: use correct types for page indices in btrfs_page_exists_in_range
  * btrfs: fix memory leak in update_space_info failure path
  * KVM: arm/arm64: Handle possible NULL stage2 pud when ageing pages
  * scsi: qla2xxx: don't disable a not previously enabled PCI device
  * powerpc/eeh: Avoid use after free in eeh_handle_special_event()
  * powerpc/numa: Fix percpu allocations to be NUMA aware
  * powerpc/hotplug-mem: Fix missing endian conversion of aa_index
  * perf/core: Drop kernel samples even though :u is specified
  * drm/vmwgfx: Handle vmalloc() failure in vmw_local_fifo_reserve()
  * drm/vmwgfx: limit the number of mip levels in vmw_gb_surface_define_ioctl()
  * drm/vmwgfx: Make sure backup_handle is always valid
  * drm/nouveau/tmr: fully separate alarm execution/pending lists
  * ALSA: timer: Fix race between read and ioctl
  * ALSA: timer: Fix missing queue indices reset at SNDRV_TIMER_IOCTL_SELECT
  * ASoC: Fix use-after-free at card unregistration
  * drivers: char: mem: Fix wraparound check to allow mappings up to the end
  * tty: Drop krefs for interrupted tty lock
  * serial: sh-sci: Fix panic when serial console and DMA are enabled
  * mm: consider memblock reservations for deferred memory initialization
    sizing
  * NFS: Ensure we revalidate attributes before using execute_ok()
  * NFSv4: Don't perform cached access checks before we've OPENed the file
  * Make __xfs_xattr_put_listen preperly report errors.
  * arm64: hw_breakpoint: fix watchpoint matching for tagged pointers
  * arm64: entry: improve data abort handling of tagged pointers
  * RDMA/qib,hfi1: Fix MR reference count leak on write with immediate
  * usercopy: Adjust tests to deal with SMAP/PAN
  * arm64: armv8_deprecated: ensure extension of addr
  * arm64: ensure extension of smp_store_release value
  * Linux 4.4.72

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