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lysander@psychopig-xxxiii:~$ grep -r . /sys/devices/system/cpu/vulnerabilities
/sys/devices/system/cpu/vulnerabilities/spectre_v2:Mitigation: Full generic retpoline
/sys/devices/system/cpu/vulnerabilities/spectre_v1:Mitigation: __user pointer sanitization
/sys/devices/system/cpu/vulnerabilities/meltdown:Mitigation: PTI
lysander@psychopig-xxxiii:~$ cat /proc/cpuinfo | grep -m1 "model name"
model name	: Intel(R) Core(TM)2 Quad CPU    Q8400  @ 2.66GHz
lysander@psychopig-xxxiii:~$ uname -a
Linux psychopig-xxxiii 4.9.0-6-amd64 #1 SMP Debian 4.9.82-1+deb9u2 (2018-02-21) x86_64 GNU/Linux
lysander@psychopig-xxxiii:~$ 

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grep -r . /sys/devices/system/cpu/vulnerabilities
/sys/devices/system/cpu/vulnerabilities/spectre_v2:Mitigation: Full generic retpoline
/sys/devices/system/cpu/vulnerabilities/spectre_v1:Mitigation: __user pointer sanitization
/sys/devices/system/cpu/vulnerabilities/meltdown:Mitigation: PTI

uname -a
Linux antix1 4.15.5-antix.2-amd64-smp #1 SMP PREEMPT Fri Feb 23 01:05:42 EET 2018 x86_64 GNU/Linux

cat /proc/cpuinfo | grep -m1 "model name"
model name	: Intel(R) Core(TM) i5 CPU       M 520  @ 2.40GHz

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Linux debian 4.9.0-6-amd64 #1 SMP Debian 4.9.82-1+deb9u2 (2018-02-21) x86_64 GNU/Linux

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sudo apt install spectre-meltdown-checker

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sudo spectre-meltdown-checker

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Checking for vulnerabilities on current system
Kernel is Linux 4.15.0-5.1-liquorix-amd64 #1 ZEN SMP PREEMPT liquorix 4.15-1~mx17+1 (2018-02-25) x86_64
CPU is Intel(R) Core(TM) i5-6200U CPU @ 2.30GHz

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  (model 78 stepping 3 ucode 0xba)
* 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)
* Kernel has array_index_mask_nospec:  YES  (1 occurence(s) found of 64 bits array_index_mask_nospec())
> 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)