Public bug reported:

Hello,

dmesg:
[ 1813.660535] vboxdrv: loading out-of-tree module taints kernel.
[ 1813.660542] Spectre V2 : System may be vulnerable to spectre v2
[ 1813.660552] vboxdrv: loading module not compiled with retpoline compiler.
[ 1813.661206] vboxdrv: module verification failed: signature and/or required 
key missing - tainting kernel
[ 1813.680341] vboxdrv: Found 4 processor cores
[ 1813.697413] vboxdrv: TSC mode is Invariant, tentative frequency 1496590422 Hz
[ 1813.697415] vboxdrv: Successfully loaded version 5.2.6_Ubuntu (interface 
0x00290000)
[ 1813.706824] Spectre V2 : System may be vulnerable to spectre v2
[ 1813.706832] vboxnetflt: loading module not compiled with retpoline compiler.
[ 1813.707367] VBoxNetFlt: Successfully started.
[ 1813.716935] Spectre V2 : System may be vulnerable to spectre v2
[ 1813.716943] vboxnetadp: loading module not compiled with retpoline compiler.
[ 1813.718033] VBoxNetAdp: Successfully started.
[ 1813.730511] Spectre V2 : System may be vulnerable to spectre v2
[ 1813.730518] vboxpci: loading module not compiled with retpoline compiler.
[ 1813.731043] VBoxPciLinuxInit
[ 1813.735258] vboxpci: IOMMU not found (not registered)
[ 1818.059815] VBoxPciLinuxLinuxUnload
[ 1818.182382] Spectre V2 : System may be vulnerable to spectre v2
[ 1818.182394] vboxdrv: loading module not compiled with retpoline compiler.
[ 1818.203403] vboxdrv: Found 4 processor cores
[ 1818.225454] vboxdrv: TSC mode is Invariant, tentative frequency 1496570131 Hz
[ 1818.225457] vboxdrv: Successfully loaded version 5.2.6_Ubuntu (interface 
0x00290000)
[ 1818.239394] Spectre V2 : System may be vulnerable to spectre v2
[ 1818.239403] vboxnetflt: loading module not compiled with retpoline compiler.
[ 1818.240180] VBoxNetFlt: Successfully started.
[ 1818.251133] Spectre V2 : System may be vulnerable to spectre v2
[ 1818.251143] vboxnetadp: loading module not compiled with retpoline compiler.
[ 1818.251726] VBoxNetAdp: Successfully started.
[ 1818.263523] Spectre V2 : System may be vulnerable to spectre v2
[ 1818.263530] vboxpci: loading module not compiled with retpoline compiler.
[ 1818.264039] VBoxPciLinuxInit
[ 1818.266382] vboxpci: IOMMU not found (not registered)
[ 1857.952441] SUPR0GipMap: fGetGipCpu=0xb
[ 1859.046216] vboxdrv: 0000000000000000 VMMR0.r0
[ 1859.301126] vboxdrv: 0000000000000000 VBoxDDR0.r0

Regards,
--
Cristian

ProblemType: Bug
DistroRelease: Ubuntu 18.04
Package: linux-image-4.15.0-9-generic 4.15.0-9.10
ProcVersionSignature: Ubuntu 4.15.0-9.10-generic 4.15.2
Uname: Linux 4.15.0-9-generic x86_64
ApportVersion: 2.20.8-0ubuntu8
Architecture: amd64
AudioDevicesInUse:
 USER        PID ACCESS COMMAND
 /dev/snd/pcmC0D0p:   caravena   1849 F...m pulseaudio
 /dev/snd/controlC0:  caravena   1849 F.... pulseaudio
CurrentDesktop: ubuntu-communitheme:ubuntu:GNOME
Date: Fri Feb  9 13:07:10 2018
InstallationDate: Installed on 2017-10-13 (119 days ago)
InstallationMedia: Ubuntu 17.10 "Artful Aardvark" - Alpha amd64 (20170926)
MachineType: SAMSUNG ELECTRONICS CO., LTD. 530U3C/530U4C
ProcFB: 0 inteldrmfb
ProcKernelCmdLine: BOOT_IMAGE=/@/boot/vmlinuz-4.15.0-9-generic 
root=UUID=707d0f89-4b1d-4432-9d50-6058dc4c1ee9 ro rootflags=subvol=@ quiet 
splash vt.handoff=1
RelatedPackageVersions:
 linux-restricted-modules-4.15.0-9-generic N/A
 linux-backports-modules-4.15.0-9-generic  N/A
 linux-firmware                            1.170
SourcePackage: linux
UpgradeStatus: No upgrade log present (probably fresh install)
dmi.bios.date: 04/15/2013
dmi.bios.vendor: Phoenix Technologies Ltd.
dmi.bios.version: P14AAJ
dmi.board.asset.tag: Base Board Asset Tag
dmi.board.name: SAMSUNG_NP1234567890
dmi.board.vendor: SAMSUNG ELECTRONICS CO., LTD.
dmi.board.version: FAB1
dmi.chassis.asset.tag: No Asset Tag
dmi.chassis.type: 9
dmi.chassis.vendor: SAMSUNG ELECTRONICS CO., LTD.
dmi.chassis.version: 0.1
dmi.modalias: 
dmi:bvnPhoenixTechnologiesLtd.:bvrP14AAJ:bd04/15/2013:svnSAMSUNGELECTRONICSCO.,LTD.:pn530U3C/530U4C:pvr0.1:rvnSAMSUNGELECTRONICSCO.,LTD.:rnSAMSUNG_NP1234567890:rvrFAB1:cvnSAMSUNGELECTRONICSCO.,LTD.:ct9:cvr0.1:
dmi.product.family: ChiefRiver System
dmi.product.name: 530U3C/530U4C
dmi.product.version: 0.1
dmi.sys.vendor: SAMSUNG ELECTRONICS CO., LTD.

** Affects: linux (Ubuntu)
     Importance: Undecided
         Status: New


** Tags: amd64 apport-bug bionic package-from-proposed

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https://bugs.launchpad.net/bugs/1748470

Title:
  Spectre V2 : System may be vulnerable to spectre v2

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