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corrado@corrado-p9-bb-1221:~$ sudo apt upgrade
Reading package lists... Done
Building dependency tree       
Reading state information... Done
Calculating upgrade... Done
The following NEW packages will be installed:
  gnome-tweaks
The following packages will be upgraded:
  apport apport-gtk chromium-codecs-ffmpeg-extra dmsetup fwupd gir1.2-upowerglib-1.0 gnome-software gnome-software-common gnome-software-plugin-snap
  gnome-tweak-tool hostname initramfs-tools initramfs-tools-bin initramfs-tools-core iso-codes language-pack-en language-pack-en-base
  ...
49 upgraded, 1 newly installed, 0 to remove and 0 not upgraded.

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corrado@corrado-p7-bb-1221:~$ sudo ./Downloads/spectre-meltdown-checker-master/spectre-meltdown-checker.sh
[sudo] password for corrado: 
Spectre and Meltdown mitigation detection tool v0.33

Checking for vulnerabilities on current system
Kernel is Linux 4.15.0-9-generic #10-Ubuntu SMP Thu Feb 8 20:22:38 UTC 2018 x86_64
CPU is Intel(R) Core(TM) i3-7100 CPU @ 3.90GHz

Hardware check
* Hardware support (CPU microcode) for mitigation techniques
  * Indirect Branch Restricted Speculation (IBRS)
    * SPEC_CTRL MSR is available:  NO 
    * CPU indicates IBRS capability:  NO 
  * Indirect Branch Prediction Barrier (IBPB)
    * PRED_CMD MSR is available:  NO 
    * CPU indicates IBPB capability:  NO 
  * Single Thread Indirect Branch Predictors (STIBP)
    * SPEC_CTRL MSR is available:  NO 
    * CPU indicates STIBP capability:  NO 
  * Enhanced IBRS (IBRS_ALL)
    * CPU indicates ARCH_CAPABILITIES MSR availability:  NO 
    * ARCH_CAPABILITIES MSR advertises IBRS_ALL capability:  NO 
  * CPU explicitly indicates not being vulnerable to Meltdown (RDCL_NO):  NO 
  * CPU microcode is known to cause stability problems:  NO 
* CPU vulnerability to the three speculative execution attacks variants
  * Vulnerable to Variant 1:  YES 
  * Vulnerable to Variant 2:  YES 
  * Vulnerable to Variant 3:  YES 

CVE-2017-5753 [bounds check bypass] aka 'Spectre Variant 1'
* Mitigated according to the /sys interface:  YES  (kernel confirms that the mitigation is active)
> STATUS:  NOT VULNERABLE  (Mitigation: __user pointer sanitization)

CVE-2017-5715 [branch target injection] aka 'Spectre Variant 2'
* Mitigated according to the /sys interface:  YES  (kernel confirms that the mitigation is active)
* Mitigation 1
  * Kernel is compiled with IBRS/IBPB support:  NO 
  * Currently enabled features
    * IBRS enabled for Kernel space:  NO 
    * IBRS enabled for User space:  NO 
    * IBPB enabled:  NO 
* Mitigation 2
  * Kernel compiled with retpoline option:  YES 
  * Kernel compiled with a retpoline-aware compiler:  YES  (kernel reports full retpoline compilation)
  * Retpoline enabled:  NO 
> STATUS:  NOT VULNERABLE  (Mitigation: Full generic retpoline)

CVE-2017-5754 [rogue data cache load] aka 'Meltdown' aka 'Variant 3'
* Mitigated according to the /sys interface:  YES  (kernel confirms that the mitigation is active)
* Kernel supports Page Table Isolation (PTI):  YES 
* PTI enabled and active:  YES 
* Running as a Xen PV DomU:  NO 
> STATUS:  NOT VULNERABLE  (Mitigation: PTI)

A false sense of security is worse than no security at all, see --disclaimer
corrado@corrado-p7-bb-1221:~$