linux: 4.4.0-110.133 -proposed tracker

[Marcelo Cerri]

This bug is for tracking the <version to be filled> upload package. This bug will contain status and testing results related to that upload.

For an explanation of the tasks and the associated workflow see: https://wiki.ubuntu.com/Kernel/kernel-sru-workflow

backports: 1742996,1742998
derivatives: 1742999,1743000,1743001,1743002,1743004,1743006
-- swm properties --
boot-testing-requested: true
phase: Promoted to proposed
proposed-announcement-sent: true
proposed-testing-requested: true

[Launchpad Janitor (janitor)]

Status changed to 'Confirmed' because the bug affects multiple users.

[Vincent Bernat (vbernat)]

Hey!

The patchset seems incomplete: 8339cae23d79be97a38df3852ef5dab870806a58 should add speculative control CPUID support for guests but only the AMD part is here. When running a guest on top of KVM, CPUID doesn't contain the spec-ctrl bit.

I am using this patch instead:
 https://github.com/exoscale/pkg-kernel-4.4/blob/4d0b19ad0379ba20846634e21ec01922222a9326/debian/patches/ibrs%2Bkvm/27-kvm-x86-add-speculative-control-cpuid-support-for-guests.patch

It also needs the following patch:
 https://github.com/exoscale/pkg-kernel-4.4/blob/4d0b19ad0379ba20846634e21ec01922222a9326/debian/patches/ibrs%2Bkvm/32-x86-provide-get-scattered-cpuid-leaf.patch

[Vincent Bernat (vbernat)]

The last patch doesn't apply cleanly. This one does: https://github.com/exoscale/pkg-kernel-4.4/blob/7586bedddca6a5a7d3e2f4fc2fbe944043fa9780/debian/patches/ibrs%2Bkvm/0003-x86-provide-get-scattered-cpuid-leaf.patch

[Launchpad Janitor (janitor)]

This bug was fixed in the package linux - 4.4.0-112.135

---------------
linux (4.4.0-112.135) xenial; urgency=low

  * linux: 4.4.0-112.135 -proposed tracker (LP: #1744244)

  * CVE-2017-5715 // CVE-2017-5753
    - x86/cpuid: Provide get_scattered_cpuid_leaf()
    - SAUCE: Fix spec_ctrl support in KVM
    - SAUCE: s390: improve cpu alternative handling for gmb and nobp
    - SAUCE: s390: print messages for gmb and nobp
    - [Config] KERNEL_NOBP=y

linux (4.4.0-111.134) xenial; urgency=low

  * linux: 4.4.0-111.134 -proposed tracker (LP: #1743362)

  * Do not duplicate changelog entries assigned to more than one bug or CVE
    (LP: #1743383)
    - [Packaging] git-ubuntu-log -- handle multiple bugs/cves better

  * CVE-2017-5715 // CVE-2017-5753
    - SAUCE: x86/microcode: Extend post microcode reload to support IBPB feature
      -- repair missmerge
    - Revert "x86/svm: Add code to clear registers on VM exit"
    - kvm: vmx: Scrub hardware GPRs at VM-exit

  * CVE-2017-5754
    - SAUCE: powerpc: use sync instead of hwsync mnemonic

linux (4.4.0-110.133) xenial; urgency=low

  * linux: 4.4.0-110.133 -proposed tracker (LP: #1742995)

  * CVE-2017-5753
    - x86/microcode/AMD: Add support for fam17h microcode loading
    - bpf: add bpf_patch_insn_single helper
    - bpf: prepare bpf_int_jit_compile/bpf_prog_select_runtime apis
    - bpf: add generic constant blinding for use in jits
    - locking/barriers: introduce new memory barrier gmb()
    - bpf: prevent speculative execution in eBPF interpreter
    - x86, bpf, jit: prevent speculative execution when JIT is enabled
    - uvcvideo: prevent speculative execution
    - carl9170: prevent speculative execution
    - qla2xxx: prevent speculative execution
    - Thermal/int340x: prevent speculative execution
    - userns: prevent speculative execution
    - ipv6: prevent speculative execution
    - fs: prevent speculative execution
    - net: mpls: prevent speculative execution
    - udf: prevent speculative execution
    - x86/feature: Enable the x86 feature to control Speculation
    - x86/feature: Report presence of IBPB and IBRS control
    - x86/enter: MACROS to set/clear IBRS and set IBPB
    - x86/enter: Use IBRS on syscall and interrupts
    - x86/idle: Disable IBRS entering idle and enable it on wakeup
    - x86/idle: Disable IBRS when offlining cpu and re-enable on wakeup
    - x86/mm: Set IBPB upon context switch
    - x86/mm: Only set IBPB when the new thread cannot ptrace current thread
    - x86/entry: Stuff RSB for entry to kernel for non-SMEP platform
    - x86/kvm: add MSR_IA32_SPEC_CTRL and MSR_IA32_PRED_CMD to kvm
    - x86/kvm: Set IBPB when switching VM
    - x86/kvm: Toggle IBRS on VM entry and exit
    - x86/kvm: Pad RSB on VM transition
    - x86/spec_ctrl: Add sysctl knobs to enable/disable SPEC_CTRL feature
    - x86/spec_ctrl: Add lock to serialize changes to ibrs and ibpb control
    - x86/syscall: Clear unused extra registers on syscall entrance
    - x86/syscall: Clear unused extra registers on 32-bit compatible syscall
      entrance
    - x86/entry: Use retpoline for syscall's indirect calls
    - x86/cpu/amd, kvm: Satisfy guest kernel reads of IC_CFG MSR
    - x...