This bug was fixed in the package linux - 4.4.0-24.43

linux (4.4.0-24.43) xenial; urgency=low

  [ Kamal Mostafa ]

  * CVE-2016-1583 (LP: #1588871)
    - ecryptfs: fix handling of directory opening
    - SAUCE: proc: prevent stacking filesystems on top
    - SAUCE: ecryptfs: forbid opening files without mmap handler
    - SAUCE: sched: panic on corrupted stack end

  * arm64: statically link rtc-efi (LP: #1583738)
    - [Config] Link rtc-efi statically on arm64

 -- Kamal Mostafa <>  Fri, 03 Jun 2016 10:02:16 -0700

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

** CVE added:

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  Cannot use CONFIG_CC_STACKPROTECTOR_STRONG: -fstack-protector-strong
  not supported by compiler

Status in dkms package in Ubuntu:
Status in gcc-defaults package in Ubuntu:
Status in linux package in Ubuntu:
  Fix Released
Status in dkms source package in Xenial:
Status in linux source package in Xenial:
  Fix Released

Bug description:
  Installing the latest 4.4.0-22 kernel ends with that error logged into 
  (only affect yakkety kernel; 4.4.0-22 kernel installation on xenial is fine)

  make "CC=cc"  KBUILD_VERBOSE= -C /lib/modules/4.4.0-22-generic/build 
M=/var/lib/dkms/nvidia-361/361.42/build ARCH=x86_64 
NV_KERNEL_OUTPUT=/lib/modules/4.4.0-22-generic/build NV_KERNEL_MODULES="nvidia 
nvidia-uvm nvidia-modeset" INSTALL_MOD_DIR=kernel/drivers/video modules
  make[1]: Entering directory '/usr/src/linux-headers-4.4.0-22-generic'
  arch/x86/Makefile:133: stack-protector enabled but compiler support broken
  Makefile:670: Cannot use CONFIG_CC_STACKPROTECTOR_STRONG: 
-fstack-protector-strong not supported by compiler

  the latest error logged is:

  /var/lib/dkms/nvidia-361/361.42/build/nvidia/nv-frontend.c:1:0: error:
  code model kernel does not support PIC mode

  Looks like it is related to the latest changes updates: gcc-6/gcc-5 
5.3.1-16ubuntu2 (some packages built with gcc-6; gcc-5 disabled for the 
packages built with gcc-6)
  Maybe some alternatives has not been updated to take care of these changes, 
as asked some time ago:

  This has been firstly reported against a nvidia crash:

  ProblemType: Bug
  DistroRelease: Ubuntu 16.10
  Package: gcc 4:5.3.1-1ubuntu1
  ProcVersionSignature: Ubuntu 4.4.0-21.37-generic 4.4.6
  Uname: Linux 4.4.0-21-generic x86_64
  NonfreeKernelModules: nvidia_uvm nvidia_modeset nvidia
  ApportVersion: 2.20.1-0ubuntu2
  Architecture: amd64
  CurrentDesktop: GNOME
  Date: Tue Apr 26 08:41:32 2016
  SourcePackage: gcc-defaults
  UpgradeStatus: No upgrade log present (probably fresh install)
  ApportVersion: 2.20.1-0ubuntu2
  Architecture: amd64
   /dev/snd/controlC1:  oem        2014 F.... pulseaudio
   /dev/snd/pcmC0D0p:   oem        2014 F...m pulseaudio
   /dev/snd/controlC0:  oem        2014 F.... pulseaudio
  CurrentDesktop: GNOME
  DistroRelease: Ubuntu 16.10
  HibernationDevice: RESUME=UUID=0a9ca7f0-6eeb-4b21-b70f-670fa600de16
   eth0      no wireless extensions.

   eth1      no wireless extensions.

   lo        no wireless extensions.
   Bus 001 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub
   Bus 003 Device 002: ID 046d:c062 Logitech, Inc. M-UAS144 [LS1 Laser Mouse]
   Bus 003 Device 001: ID 1d6b:0001 Linux Foundation 1.1 root hub
   Bus 002 Device 001: ID 1d6b:0001 Linux Foundation 1.1 root hub
  NonfreeKernelModules: nvidia_uvm nvidia_modeset nvidia
  Package: ubuntu

  ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-4.4.0-21-generic 
root=UUID=7c755ed6-51cc-4b75-88ac-9c75acf82749 ro
  ProcVersionSignature: Ubuntu 4.4.0-21.37-generic 4.4.6
   linux-restricted-modules-4.4.0-21-generic N/A
   linux-backports-modules-4.4.0-21-generic  N/A
   linux-firmware                            1.157

  Tags:  yakkety
  Uname: Linux 4.4.0-21-generic x86_64
  UpgradeStatus: No upgrade log present (probably fresh install)
  UserGroups: adm cdrom dip lpadmin plugdev sambashare sudo
  _MarkForUpload: True 07/22/2010
  dmi.bios.vendor: American Megatrends Inc.
  dmi.bios.version: 3002
  dmi.board.asset.tag: To Be Filled By O.E.M. P5W DH Deluxe
  dmi.board.vendor: ASUSTeK Computer INC.
  dmi.board.version: Rev 1.xx
  dmi.chassis.asset.tag: Asset-1234567890
  dmi.chassis.type: 3
  dmi.chassis.vendor: Chassis Manufacture
  dmi.chassis.version: Chassis Version
dmi:bvnAmericanMegatrendsInc.:bvr3002:bd07/22/2010:svnASUSTEKCOMPUTERINC:pnP5WDHDeluxe:pvrSystemVersion:rvnASUSTeKComputerINC.:rnP5WDHDeluxe:rvrRev1.xx:cvnChassisManufacture:ct3:cvrChassisVersion: P5W DH Deluxe
  dmi.product.version: System Version
  dmi.sys.vendor: ASUSTEK COMPUTER INC

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