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[Launchpad Bug Tracker <1790883@xxxxxxxxxxxxxxxxxx>]

This bug was fixed in the package linux - 4.4.0-137.163

---------------
linux (4.4.0-137.163) xenial; urgency=medium

  * CVE-2018-14633
    - iscsi target: Use hex2bin instead of a re-implementation

  * CVE-2018-17182
    - mm: get rid of vmacache_flush_all() entirely

linux (4.4.0-136.162) xenial; urgency=medium

  * linux: 4.4.0-136.162 -proposed tracker (LP: #1791745)

  * CVE-2017-5753
    - bpf: properly enforce index mask to prevent out-of-bounds speculation
    - Revert "UBUNTU: SAUCE: bpf: Use barrier_nospec() instead of osb()"
    - Revert "bpf: prevent speculative execution in eBPF interpreter"

  * L1TF mitigation not effective in some CPU and RAM combinations
    (LP: #1788563) // CVE-2018-3620 // CVE-2018-3646
    - x86/speculation/l1tf: Fix overflow in l1tf_pfn_limit() on 32bit
    - x86/speculation/l1tf: Fix off-by-one error when warning that system has too
      much RAM
    - x86/speculation/l1tf: Increase l1tf memory limit for Nehalem+

  * CVE-2018-15594
    - x86/paravirt: Fix spectre-v2 mitigations for paravirt guests

  * Xenial update to 4.4.144 stable release (LP: #1791080)
    - KVM/Eventfd: Avoid crash when assign and deassign specific eventfd in
      parallel.
    - x86/MCE: Remove min interval polling limitation
    - fat: fix memory allocation failure handling of match_strdup()
    - ALSA: rawmidi: Change resized buffers atomically
    - ARC: Fix CONFIG_SWAP
    - ARC: mm: allow mprotect to make stack mappings executable
    - mm: memcg: fix use after free in mem_cgroup_iter()
    - ipv4: Return EINVAL when ping_group_range sysctl doesn't map to user ns
    - ipv6: fix useless rol32 call on hash
    - lib/rhashtable: consider param->min_size when setting initial table size
    - net/ipv4: Set oif in fib_compute_spec_dst
    - net: phy: fix flag masking in __set_phy_supported
    - ptp: fix missing break in switch
    - tg3: Add higher cpu clock for 5762.
    - net: Don't copy pfmemalloc flag in __copy_skb_header()
    - skbuff: Unconditionally copy pfmemalloc in __skb_clone()
    - xhci: Fix perceived dead host due to runtime suspend race with event handler
    - x86/paravirt: Make native_save_fl() extern inline
    - SAUCE: Add missing CPUID_7_EDX defines
    - SAUCE: x86/speculation: Expose indirect_branch_prediction_barrier()
    - x86/pti: Mark constant arrays as __initconst
    - x86/asm/entry/32: Simplify pushes of zeroed pt_regs->REGs
    - x86/entry/64/compat: Clear registers for compat syscalls, to reduce
      speculation attack surface
    - x86/speculation: Clean up various Spectre related details
    - x86/speculation: Fix up array_index_nospec_mask() asm constraint
    - x86/xen: Zero MSR_IA32_SPEC_CTRL before suspend
    - x86/mm: Factor out LDT init from context init
    - x86/mm: Give each mm TLB flush generation a unique ID
    - SAUCE: x86/speculation: Use Indirect Branch Prediction Barrier in context
      switch
    - x86/speculation: Use IBRS if available before calling into firmware
    - x86/speculation: Move firmware_restrict_branch_speculation_*() from C to CPP
    - selftest/seccomp: Fix the seccomp(2) signature
    - xen: set cpu capabilities from xen_start_kernel()
    - x86/amd: don't set X86_BUG_SYSRET_SS_ATTRS when running under Xen
    - SAUCE: Preserve SPEC_CTRL MSR in new inlines
    - SAUCE: Add Knights Mill to NO SSB list
    - x86/process: Correct and optimize TIF_BLOCKSTEP switch
    - x86/process: Optimize TIF_NOTSC switch
    - Revert "x86/cpufeatures: Add FEATURE_ZEN"
    - Revert "x86/cpu/AMD: Fix erratum 1076 (CPB bit)"
    - x86/cpu/AMD: Fix erratum 1076 (CPB bit)
    - x86/cpufeatures: Add FEATURE_ZEN
    - x86/xen: Add call of speculative_store_bypass_ht_init() to PV paths
    - x86/cpu: Re-apply forced caps every time CPU caps are re-read
    - block: do not use interruptible wait anywhere
    - clk: tegra: Fix PLL_U post divider and initial rate on Tegra30
    - ubi: Introduce vol_ignored()
    - ubi: Rework Fastmap attach base code
    - ubi: Be more paranoid while seaching for the most recent Fastmap
    - ubi: Fix races around ubi_refill_pools()
    - ubi: Fix Fastmap's update_vol()
    - ubi: fastmap: Erase outdated anchor PEBs during attach
    - Linux 4.4.144

  * CVE-2017-5715 (Spectre v2 s390x)
    - s390: detect etoken facility
    - s390/lib: use expoline for all bcr instructions
    - SAUCE: s390: use expoline thunks for all branches generated by the BPF JIT

  * Xenial update to 4.4.143 stable release (LP: #1790884)
    - compiler, clang: suppress warning for unused static inline functions
    - compiler, clang: properly override 'inline' for clang
    - compiler, clang: always inline when CONFIG_OPTIMIZE_INLINING is disabled
    - compiler-gcc.h: Add __attribute__((gnu_inline)) to all inline declarations
    - x86/asm: Add _ASM_ARG* constants for argument registers to <asm/asm.h>
    - ocfs2: subsystem.su_mutex is required while accessing the item->ci_parent
    - bcm63xx_enet: correct clock usage
    - bcm63xx_enet: do not write to random DMA channel on BCM6345
    - crypto: crypto4xx - remove bad list_del
    - crypto: crypto4xx - fix crypto4xx_build_pdr, crypto4xx_build_sdr leak
    - atm: zatm: Fix potential Spectre v1
    - net: dccp: avoid crash in ccid3_hc_rx_send_feedback()
    - net: dccp: switch rx_tstamp_last_feedback to monotonic clock
    - net/mlx5: Fix incorrect raw command length parsing
    - net: sungem: fix rx checksum support
    - qed: Limit msix vectors in kdump kernel to the minimum required count.
    - r8152: napi hangup fix after disconnect
    - tcp: fix Fast Open key endianness
    - tcp: prevent bogus FRTO undos with non-SACK flows
    - vhost_net: validate sock before trying to put its fd
    - net_sched: blackhole: tell upper qdisc about dropped packets
    - net/mlx5: Fix command interface race in polling mode
    - net: cxgb3_main: fix potential Spectre v1
    - rtlwifi: rtl8821ae: fix firmware is not ready to run
    - MIPS: Call dump_stack() from show_regs()
    - MIPS: Use async IPIs for arch_trigger_cpumask_backtrace()
    - netfilter: ebtables: reject non-bridge targets
    - KEYS: DNS: fix parsing multiple options
    - rds: avoid unenecessary cong_update in loop transport
    - net/nfc: Avoid stalls when nfc_alloc_send_skb() returned NULL.
    - Linux 4.4.143

  * Xenial update to 4.4.142 stable release (LP: #1790883)
    - Kbuild: fix # escaping in .cmd files for future Make
    - perf tools: Move syscall number fallbacks from perf-sys.h to
      tools/arch/x86/include/asm/
    - Linux 4.4.142

  * Xenial update to 4.4.141 stable release (LP: #1790620)
    - MIPS: Fix ioremap() RAM check
    - ibmasm: don't write out of bounds in read handler
    - vmw_balloon: fix inflation with batching
    - ahci: Disable LPM on Lenovo 50 series laptops with a too old BIOS
    - USB: serial: ch341: fix type promotion bug in ch341_control_in()
    - USB: serial: cp210x: add another USB ID for Qivicon ZigBee stick
    - USB: serial: keyspan_pda: fix modem-status error handling
    - USB: yurex: fix out-of-bounds uaccess in read handler
    - USB: serial: mos7840: fix status-register error handling
    - usb: quirks: add delay quirks for Corsair Strafe
    - xhci: xhci-mem: off by one in xhci_stream_id_to_ring()
    - HID: usbhid: add quirk for innomedia INNEX GENESIS/ATARI adapter
    - tools build: fix # escaping in .cmd files for future Make
    - iw_cxgb4: correctly enforce the max reg_mr depth
    - x86/cpufeature: Move some of the scattered feature bits to x86_capability
    - x86/cpu: Provide a config option to disable static_cpu_has
    - x86/fpu: Add an XSTATE_OP() macro
    - x86/fpu: Get rid of xstate_fault()
    - x86/headers: Don't include asm/processor.h in asm/atomic.h
    - x86/cpufeature: Replace the old static_cpu_has() with safe variant
    - x86/cpufeature: Get rid of the non-asm goto variant
    - x86/alternatives: Add an auxilary section
    - x86/alternatives: Discard dynamic check after init
    - x86/vdso: Use static_cpu_has()
    - x86/boot: Simplify kernel load address alignment check
    - x86/cpufeature: Speed up cpu_feature_enabled()
    - x86/cpufeature, x86/mm/pkeys: Add protection keys related CPUID definitions
    - x86/mm/pkeys: Fix mismerge of protection keys CPUID bits
    - x86/cpu: Add detection of AMD RAS Capabilities
    - x86/cpufeature, x86/mm/pkeys: Fix broken compile-time disabling of pkeys
    - x86/cpufeature: Make sure DISABLED/REQUIRED macros are updated
    - x86/cpufeature: Add helper macro for mask check macros
    - uprobes/x86: Remove incorrect WARN_ON() in uprobe_init_insn()
    - netfilter: nf_queue: augment nfqa_cfg_policy
    - netfilter: x_tables: initialise match/target check parameter struct
    - loop: add recursion validation to LOOP_CHANGE_FD
    - PM / hibernate: Fix oops at snapshot_write()
    - SAUCE: RDMA/ucm: Blacklist UCM module
    - loop: remember whether sysfs_create_group() was done
    - Linux 4.4.141
    - [Config] Refresh configs for 4.4.141

  * regression with EXT4 file systems and meta_bg flag (LP: #1789653)
    - ext4: fix false negatives *and* false positives in ext4_check_descriptors()

  * CVE-2018-15572
    - x86/speculation: Protect against userspace-userspace spectreRSB

  * random oopses on s390 systems using NVMe devices (LP: #1790480)
    - s390/pci: fix out of bounds access during irq setup

  * CVE-2018-6555
    - SAUCE: irda: Only insert new objects into the global database via setsockopt

  * CVE-2018-6554
    - SAUCE: irda: Fix memory leak caused by repeated binds of irda socket

  * errors when scanning partition table of corrupted AIX disk (LP: #1787281)
    - partitions/aix: fix usage of uninitialized lv_info and lvname structures
    - partitions/aix: append null character to print data from disk

 -- Stefan Bader <stefan.bader@xxxxxxxxxxxxx>  Mon, 24 Sep 2018 13:39:05
+0200

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

** CVE added: https://cve.mitre.org/cgi-bin/cvename.cgi?name=2017-5715

** CVE added: https://cve.mitre.org/cgi-bin/cvename.cgi?name=2017-5753

** CVE added: https://cve.mitre.org/cgi-bin/cvename.cgi?name=2018-14633

** CVE added: https://cve.mitre.org/cgi-bin/cvename.cgi?name=2018-15572

** CVE added: https://cve.mitre.org/cgi-bin/cvename.cgi?name=2018-15594

** CVE added: https://cve.mitre.org/cgi-bin/cvename.cgi?name=2018-17182

** CVE added: https://cve.mitre.org/cgi-bin/cvename.cgi?name=2018-3620

** CVE added: https://cve.mitre.org/cgi-bin/cvename.cgi?name=2018-3646

** CVE added: https://cve.mitre.org/cgi-bin/cvename.cgi?name=2018-6554

** CVE added: https://cve.mitre.org/cgi-bin/cvename.cgi?name=2018-6555

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https://bugs.launchpad.net/bugs/1790883

Title:
  Xenial update to 4.4.142 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 4.4.142 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 4.4.142 stable release shall be applied:
  * Kbuild: fix # escaping in .cmd files for future Make
  * perf tools: Move syscall number fallbacks from perf-sys.h to
    tools/arch/x86/include/asm/
  * Linux 4.4.142

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