SpectreMeltdown 우분투 커널 3.13.0-141-generic은 업데이트 후에도 여전히 취약합니까?

내 서버의 우분투 14.04를 최신 커널로 업데이트했습니다.

3.13.0-141-generic

제가 아는 한, 이것은 spectreMeltdown 취약점이 공개된 이후 두 번째 버전입니다.

그러나 Spectre-and-meltdown 취약점 검사기를 실행할 때:

https://github.com/speed47/spectre-meltdown-checker

내 시스템은 여전히 ​​취약한 것 같습니다.

Spectre and Meltdown mitigation detection tool v0.32

Checking for vulnerabilities on current system
Kernel is Linux 3.13.0-141-generic #190-Ubuntu SMP Fri Jan 19 12:52:38 UTC 2018 x86_64
CPU is Intel(R) Xeon(R) CPU E5-2630L v2 @ 2.40GHz

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 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'
* Checking count of LFENCE opcodes in kernel:  YES
> STATUS:  NOT VULNERABLE  (99 opcodes found, which is >= 70, heuristic to be improved when official patches become available)

CVE-2017-5715 [branch target injection] aka 'Spectre Variant 2'
* Mitigation 1
  * Kernel is compiled with IBRS/IBPB support:  YES
  * Currently enabled features
    * IBRS enabled for Kernel space:  NO  (echo 1 > /proc/sys/kernel/ibrs_enabled)
    * IBRS enabled for User space:  NO  (echo 2 > /proc/sys/kernel/ibrs_enabled)
    * IBPB enabled:  NO  (echo 1 > /proc/sys/kernel/ibpb_enabled)
* Mitigation 2
  * Kernel compiled with retpoline option:  NO
  * Kernel compiled with a retpoline-aware compiler:  NO
  * Retpoline enabled:  NO
> STATUS:  VULNERABLE  (IBRS hardware + kernel support OR kernel with retpoline are needed to mitigate the vulnerability)

CVE-2017-5754 [rogue data cache load] aka 'Meltdown' aka 'Variant 3'
* Kernel supports Page Table Isolation (PTI):  YES
* PTI enabled and active:  YES
* Running as a Xen PV DomU:  NO
> STATUS:  NOT VULNERABLE  (PTI mitigates the vulnerability)

A false sense of security is worse than no security at all, see --disclaimer

이러한 위협을 완화하기 위해 추가 조치를 취할 수 있습니까? 아니면 이것이 현재 상황입니까?

미리 감사드립니다!