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• #57971 Frawly veterán growler #57969

  Új Válasz 2018-01-30 15:29:39 #57971

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  Frawly

  veterán

  válasz growler #57969 üzenetére

  Melyik SM checkerrel nézed? A speed47-félével? Hányas verzió?

  A 4.15-nek Spectre2 és Meltdown ellen foltozva kéne lennie Retpoline-nal és (K)TPI-vel. Spectre1 ellen csak a 4.16-ban lesz patch, addig meg még az emberek többsége sebezhető marad.

  Én is felpasszintottam Arch stagingből a 4.15-öt, nálam ezt írja:

  Spectre and Meltdown mitigation detection tool v0.33+

Checking for vulnerabilities on current system
Kernel is Linux 4.15.0-1-ARCH #1 SMP Mon Jan 29 04:41:41 UTC 2018 x86_64
CPU is Intel(R) Core(TM) i7-2620M CPU @ 2.70GHz

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'
* Checking count of LFENCE opcodes in kernel: NO
> STATUS: VULNERABLE (only 61 opcodes found, should be >= 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: 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: YES
> STATUS: NOT VULNERABLE (retpoline mitigates 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)

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