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[Launchpad Bug Tracker <1751021@xxxxxxxxxxxxxxxxxx>]

This bug was fixed in the package linux - 3.13.0-143.192

---------------
linux (3.13.0-143.192) trusty; urgency=medium

  * linux: 3.13.0-143.192 -proposed tracker (LP: #1751838)

  * CVE-2017-5715 (Spectre v2 retpoline)
    - x86/alternatives: Fix ALTERNATIVE_2 padding generation properly
    - x86/alternatives: Fix alt_max_short macro to really be a max()
    - x86/alternatives: Guard NOPs optimization
    - x86/alternatives: Switch AMD F15h and later to the P6 NOPs
    - x86/alternatives: Make optimize_nops() interrupt safe and synced
    - x86/alternatives: Fix optimize_nops() checking
    - x86/cpuid: Provide get_scattered_cpuid_leaf()
    - x86/cpu: Factor out application of forced CPU caps
    - x86/cpufeatures: Make CPU bugs sticky
    - x86/cpufeatures: Add X86_BUG_CPU_INSECURE
    - x86/pti: Rename BUG_CPU_INSECURE to BUG_CPU_MELTDOWN
    - x86/cpufeatures: Add X86_BUG_SPECTRE_V[12]
    - x86/cpu, x86/pti: Do not enable PTI on AMD processors
    - x86/cpu: Merge bugs.c and bugs_64.c
    - sysfs/cpu: Add vulnerability folder
    - x86/cpu: Implement CPU vulnerabilites sysfs functions
    - x86/alternatives: Add missing '\n' at end of ALTERNATIVE inline asm
    - x86/mm/32: Move setup_clear_cpu_cap(X86_FEATURE_PCID) earlier
    - x86/asm: Use register variable to get stack pointer value
    - x86/kbuild: enable modversions for symbols exported from asm
    - x86/asm: Make asm/alternative.h safe from assembly
    - EXPORT_SYMBOL() for asm
    - kconfig.h: use __is_defined() to check if MODULE is defined
    - x86/retpoline: Add initial retpoline support
    - x86/spectre: Add boot time option to select Spectre v2 mitigation
    - x86/retpoline/crypto: Convert crypto assembler indirect jumps
    - x86/retpoline/entry: Convert entry assembler indirect jumps
    - x86/retpoline/ftrace: Convert ftrace assembler indirect jumps
    - x86/retpoline/hyperv: Convert assembler indirect jumps
    - x86/retpoline/xen: Convert Xen hypercall indirect jumps
    - x86/retpoline/checksum32: Convert assembler indirect jumps
    - x86/retpoline/irq32: Convert assembler indirect jumps
    - x86/retpoline: Fill return stack buffer on vmexit
    - x86/retpoline: Remove compile time warning
    - x86/retpoline: Add LFENCE to the retpoline/RSB filling RSB macros
    - module: Add retpoline tag to VERMAGIC
    - x86/mce: Make machine check speculation protected
    - retpoline: Introduce start/end markers of indirect thunk
    - kprobes/x86: Disable optimizing on the function jumps to indirect thunk
    - x86/retpoline: Optimize inline assembler for vmexit_fill_RSB
    - [Config] CONFIG_RETPOLINE=y
    - [Packaging] retpoline -- add call site validation
    - [Packaging] retpoline files must be sorted
    - [Config] disable retpoline for the first upload
    - [Config] updateconfigs - enable CONFIG_GENERIC_CPU_VULNERABILITIES

  * retpoline abi files are empty on i386 (LP: #1751021)
    - [Packaging] retpoline-extract -- instantiate retpoline files for i386
    - [Packaging] final-checks -- sanity checking ABI contents
    - [Packaging] final-checks -- check for empty retpoline files

  * CVE-2017-5715 (Spectre v2 Intel)
    - x86, microcode: Share native MSR accessing variants
    - kvm: vmx: Scrub hardware GPRs at VM-exit
    - SAUCE: x86/feature: Enable the x86 feature to control Speculation
    - SAUCE: x86/feature: Report presence of IBPB and IBRS control
    - SAUCE: x86/enter: MACROS to set/clear IBRS and set IBPB
    - SAUCE: x86/enter: Use IBRS on syscall and interrupts
    - SAUCE: x86/idle: Disable IBRS entering idle and enable it on wakeup
    - SAUCE: x86/idle: Disable IBRS when offlining cpu and re-enable on wakeup
    - SAUCE: x86/mm: Set IBPB upon context switch
    - SAUCE: x86/mm: Only set IBPB when the new thread cannot ptrace current
      thread
    - SAUCE: x86/entry: Stuff RSB for entry to kernel for non-SMEP platform
    - SAUCE: x86/kvm: add MSR_IA32_SPEC_CTRL and MSR_IA32_PRED_CMD to kvm
    - SAUCE: x86/kvm: Set IBPB when switching VM
    - SAUCE: x86/kvm: Toggle IBRS on VM entry and exit
    - SAUCE: x86/spec_ctrl: Add sysctl knobs to enable/disable SPEC_CTRL feature
    - SAUCE: x86/spec_ctrl: Add lock to serialize changes to ibrs and ibpb control
    - SAUCE: x86/cpu/AMD: Add speculative control support for AMD
    - SAUCE: x86/microcode: Extend post microcode reload to support IBPB feature
    - SAUCE: KVM: SVM: Do not intercept new speculative control MSRs
    - SAUCE: x86/svm: Set IBRS value on VM entry and exit
    - SAUCE: x86/svm: Set IBPB when running a different VCPU
    - SAUCE: KVM: x86: Add speculative control CPUID support for guests
    - SAUCE: x86/entry: Fixup 32bit compat call locations
    - SAUCE: KVM: Fix spec_ctrl CPUID support for guests
    - SAUCE: x86/cpuid: Fix ordering of scattered feature list
    - SAUCE: turn off IBRS when full retpoline is present

  * CVE-2017-5753 (Spectre v1 Intel)
    - x86: Add another set of MSR accessor functions
    - x86/cpu/AMD: Make the LFENCE instruction serialized
    - SAUCE: x86/cpu/AMD: switch to lfence rather than mfence
    - locking/barriers: introduce new observable speculation barrier
    - bpf: prevent speculative execution in eBPF interpreter
    - uvcvideo: prevent speculative execution
    - carl9170: prevent speculative execution
    - qla2xxx: prevent speculative execution
    - fs: prevent speculative execution
    - udf: prevent speculative execution
    - userns: prevent speculative execution
    - SAUCE: claim mitigation via observable speculation barrier
    - powerpc: add osb barrier
    - s390/spinlock: add osb memory barrier
    - arm64: no osb() implementation yet
    - arm: no osb() implementation yet

  * CVE-2017-5715 (revert embargoed) // CVE-2017-5753 (revert embargoed)
    - Revert "UBUNTU: SAUCE: x86/cpuid: Fix ordering of scattered feature list"
    - Revert "UBUNTU: SAUCE: KVM: Fix spec_ctrl CPUID support for guests"
    - Revert "UBUNTU: SAUCE: x86/entry: Fixup 32bit compat call locations"
    - Revert "UBUNTU: SAUCE: powerpc: no gmb() implementation yet"
    - Revert "UBUNTU: SAUCE: arm: no gmb() implementation yet"
    - Revert "UBUNTU: SAUCE: arm64: no gmb() implementation yet"
    - Revert "UBUNTU: SAUCE: x86/kvm: Fix stuff_RSB() for 32-bit"
    - Revert "UBUNTU: SAUCE: x86/cpu/AMD: Remove now unused definition of
      MFENCE_RDTSC feature"
    - Revert "UBUNTU: SAUCE: x86/cpu/AMD: Make the LFENCE instruction serialized"
    - Revert "UBUNTU: SAUCE: x86/svm: Add code to clobber the RSB on VM exit"
    - Revert "UBUNTU: SAUCE: KVM: x86: Add speculative control CPUID support for
      guests"
    - Revert "UBUNTU: SAUCE: x86/svm: Set IBPB when running a different VCPU"
    - Revert "UBUNTU: SAUCE: x86/svm: Set IBRS value on VM entry and exit"
    - Revert "UBUNTU: SAUCE: KVM: SVM: Do not intercept new speculative control
      MSRs"
    - Revert "UBUNTU: SAUCE: x86/microcode: Extend post microcode reload to
      support IBPB feature"
    - Revert "UBUNTU: SAUCE: x86/cpu/AMD: Add speculative control support for AMD"
    - Revert "UBUNTU: SAUCE: x86/entry: Use retpoline for syscall's indirect
      calls"
    - Revert "UBUNTU: SAUCE: x86/spec_ctrl: Add lock to serialize changes to ibrs
      and ibpb control"
    - Revert "UBUNTU: SAUCE: x86/spec_ctrl: Add sysctl knobs to enable/disable
      SPEC_CTRL feature"
    - Revert "UBUNTU: SAUCE: x86/kvm: Pad RSB on VM transition"
    - Revert "UBUNTU: SAUCE: x86/kvm: Toggle IBRS on VM entry and exit"
    - Revert "UBUNTU: SAUCE: x86/kvm: Set IBPB when switching VM"
    - Revert "UBUNTU: SAUCE: x86/kvm: add MSR_IA32_SPEC_CTRL and MSR_IA32_PRED_CMD
      to kvm"
    - Revert "UBUNTU: SAUCE: x86/entry: Stuff RSB for entry to kernel for non-SMEP
      platform"
    - Revert "UBUNTU: SAUCE: x86/mm: Only set IBPB when the new thread cannot
      ptrace current thread"
    - Revert "UBUNTU: SAUCE: x86/mm: Set IBPB upon context switch"
    - Revert "UBUNTU: SAUCE: x86/idle: Disable IBRS when offlining cpu and re-
      enable on wakeup"
    - Revert "UBUNTU: SAUCE: x86/idle: Disable IBRS entering idle and enable it on
      wakeup"
    - Revert "UBUNTU: SAUCE: x86/enter: Use IBRS on syscall and interrupts"
    - Revert "UBUNTU: SAUCE: x86/enter: MACROS to set/clear IBRS and set IBPB"
    - Revert "UBUNTU: SAUCE: x86/feature: Report presence of IBPB and IBRS
      control"
    - Revert "UBUNTU: SAUCE: x86/feature: Enable the x86 feature to control
      Speculation"
    - Revert "UBUNTU: SAUCE: udf: prevent speculative execution"
    - Revert "UBUNTU: SAUCE: fs: prevent speculative execution"
    - Revert "UBUNTU: SAUCE: userns: prevent speculative execution"
    - Revert "UBUNTU: SAUCE: cw1200: prevent speculative execution"
    - Revert "UBUNTU: SAUCE: qla2xxx: prevent speculative execution"
    - Revert "UBUNTU: SAUCE: p54: prevent speculative execution"
    - Revert "UBUNTU: SAUCE: carl9170: prevent speculative execution"
    - Revert "UBUNTU: SAUCE: uvcvideo: prevent speculative execution"
    - Revert "UBUNTU: SAUCE: locking/barriers: introduce new memory barrier gmb()"
    - Revert "kvm: vmx: Scrub hardware GPRs at VM-exit"
    - Revert "x86/cpuid: Provide get_scattered_cpuid_leaf()"
    - Revert "x86: Add another set of MSR accessor functions"
    - Revert "x86, microcode: Share native MSR accessing variants"

  * stress-ng enosys stressor triggers a kernel BUG (LP: #1750786)
    - SAUCE: x86, extable: fix uaccess fixup detection

 -- Kleber Sacilotto de Souza <kleber.souza@xxxxxxxxxxxxx>  Tue, 27 Feb
2018 10:32:36 +0100

** Changed in: linux (Ubuntu Trusty)
       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

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https://bugs.launchpad.net/bugs/1751021

Title:
  retpoline abi files are empty on i386

Status in linux package in Ubuntu:
  In Progress
Status in linux source package in Trusty:
  Fix Released
Status in linux source package in Xenial:
  Fix Committed
Status in linux source package in Artful:
  Fix Committed

Bug description:
  The <flavour>.retpoline files in the current abi are actually blank.
  This is due to incorrect handling in retpoline-extract.

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