X-Git-Url: https://gerrit.fd.io/r/gitweb?p=csit.git;a=blobdiff_plain;f=docs%2Freport%2Fintroduction%2Fenvironment%2Fsut_meltspec_zn2.rst;fp=docs%2Freport%2Fintroduction%2Fenvironment%2Fsut_meltspec_zn2.rst;h=0000000000000000000000000000000000000000;hp=160585dac187aba3baa3914cce7dfb34648a63ec;hb=374954b9d648f503f6783325a1266457953a998d;hpb=46eac7bb697e8261dba5b439a15f5a6125f31760

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-Spectre and Meltdown Checks
-^^^^^^^^^^^^^^^^^^^^^^^^^^^
-
-Following section displays the output of a running shell script to tell if
-system is vulnerable against the several speculative execution CVEs that were
-made public in 2018. Script is available on `Spectre & Meltdown Checker Github
-<https://github.com/speed47/spectre-meltdown-checker>`_.
-
-::
-
-  Spectre and Meltdown mitigation detection tool v0.45
-
-  Checking for vulnerabilities on current system
-  Kernel is Linux 5.15.0-46-generic #49-Ubuntu SMP Thu Aug 4 18:03:25 UTC 2022 x86_64
-  CPU is AMD EPYC 7532 32-Core Processor
-
-  Hardware check
-  * Hardware support (CPU microcode) for mitigation techniques
-    * Indirect Branch Restricted Speculation (IBRS)
-      * SPEC_CTRL MSR is available: YES
-      * CPU indicates IBRS capability: YES (IBRS_SUPPORT feature bit)
-      * CPU indicates preferring IBRS always-on: NO
-      * CPU indicates preferring IBRS over retpoline: YES
-    * Indirect Branch Prediction Barrier (IBPB)
-      * CPU indicates IBPB capability: YES (IBPB_SUPPORT feature bit)
-    * Single Thread Indirect Branch Predictors (STIBP)
-      * SPEC_CTRL MSR is available: YES
-      * CPU indicates STIBP capability: YES (AMD STIBP feature bit)
-      * CPU indicates preferring STIBP always-on: NO
-    * Speculative Store Bypass Disable (SSBD)
-      * CPU indicates SSBD capability: YES (AMD SSBD in SPEC_CTRL)
-    * L1 data cache invalidation
-      * CPU indicates L1D flush capability: NO
-    * CPU supports Transactional Synchronization Extensions (TSX): NO
-    * CPU supports Software Guard Extensions (SGX): NO
-    * CPU supports Special Register Buffer Data Sampling (SRBDS): NO
-    * CPU microcode is known to cause stability problems: NO (family 0x17 model 0x31 stepping 0x0 ucode 0x8301038 cpuid 0x830f10)
-    * CPU microcode is the latest known available version: NO (latest version is 0x8301052 dated 2021/11/11 according to builtin firmwares DB v222+i20220208)
-  * CPU vulnerability to the speculative execution attack variants
-    * Affected by CVE-2017-5753 (Spectre Variant 1, bounds check bypass): YES
-    * Affected by CVE-2017-5715 (Spectre Variant 2, branch target injection): YES
-    * Affected by CVE-2017-5754 (Variant 3, Meltdown, rogue data cache load): NO
-    * Affected by CVE-2018-3640 (Variant 3a, rogue system register read): NO
-    * Affected by CVE-2018-3639 (Variant 4, speculative store bypass): YES
-    * Affected by CVE-2018-3615 (Foreshadow (SGX), L1 terminal fault): NO
-    * Affected by CVE-2018-3620 (Foreshadow-NG (OS), L1 terminal fault): NO
-    * Affected by CVE-2018-3646 (Foreshadow-NG (VMM), L1 terminal fault): NO
-    * Affected by CVE-2018-12126 (Fallout, microarchitectural store buffer data sampling (MSBDS)): NO
-    * Affected by CVE-2018-12130 (ZombieLoad, microarchitectural fill buffer data sampling (MFBDS)): NO
-    * Affected by CVE-2018-12127 (RIDL, microarchitectural load port data sampling (MLPDS)): NO
-    * Affected by CVE-2019-11091 (RIDL, microarchitectural data sampling uncacheable memory (MDSUM)): NO
-    * Affected by CVE-2019-11135 (ZombieLoad V2, TSX Asynchronous Abort (TAA)): NO
-    * Affected by CVE-2018-12207 (No eXcuses, iTLB Multihit, machine check exception on page size changes (MCEPSC)): NO
-    * Affected by CVE-2020-0543 (Special Register Buffer Data Sampling (SRBDS)): NO
-
-  CVE-2017-5753 aka Spectre Variant 1, bounds check bypass
-  * Mitigated according to the /sys interface: YES (Mitigation: usercopy/swapgs barriers and __user pointer sanitization)
-  > STATUS: UNKNOWN (/sys vulnerability interface use forced, but its not available!)
-
-  CVE-2017-5715 aka Spectre Variant 2, branch target injection
-  * Mitigated according to the /sys interface: YES (Mitigation: Retpolines, IBPB: conditional, IBRS_FW, STIBP: always-on, RSB filling)
-  > STATUS: VULNERABLE (retpoline+IBPB is needed to mitigate the vulnerability)
-
-  CVE-2017-5754 aka Variant 3, Meltdown, rogue data cache load
-  * Mitigated according to the /sys interface: YES (Not affected)
-  * Running as a Xen PV DomU: NO
-  > STATUS: NOT VULNERABLE (your CPU vendor reported your CPU model as not affected)
-
-  CVE-2018-3640 aka Variant 3a, rogue system register read
-  * CPU microcode mitigates the vulnerability: YES
-  > STATUS: NOT VULNERABLE (your CPU vendor reported your CPU model as not affected)
-
-  CVE-2018-3639 aka Variant 4, speculative store bypass
-  * Mitigated according to the /sys interface: YES (Mitigation: Speculative Store Bypass disabled via prctl and seccomp)
-  > STATUS: NOT VULNERABLE (Mitigation: Speculative Store Bypass disabled via prctl and seccomp)
-
-  CVE-2018-3615 aka Foreshadow (SGX), L1 terminal fault
-  * CPU microcode mitigates the vulnerability: N/A
-  > STATUS: NOT VULNERABLE (your CPU vendor reported your CPU model as not affected)
-
-  CVE-2018-3620 aka Foreshadow-NG (OS), L1 terminal fault
-  * Mitigated according to the /sys interface: YES (Not affected)
-  > STATUS: NOT VULNERABLE (your CPU vendor reported your CPU model as not affected)
-
-  CVE-2018-3646 aka Foreshadow-NG (VMM), L1 terminal fault
-  * Information from the /sys interface: Not affected
-  > STATUS: NOT VULNERABLE (your CPU vendor reported your CPU model as not affected)
-
-  CVE-2018-12126 aka Fallout, microarchitectural store buffer data sampling (MSBDS)
-  * Mitigated according to the /sys interface: YES (Not affected)
-  > STATUS: NOT VULNERABLE (your CPU vendor reported your CPU model as not affected)
-
-  CVE-2018-12130 aka ZombieLoad, microarchitectural fill buffer data sampling (MFBDS)
-  * Mitigated according to the /sys interface: YES (Not affected)
-  > STATUS: NOT VULNERABLE (your CPU vendor reported your CPU model as not affected)
-
-  CVE-2018-12127 aka RIDL, microarchitectural load port data sampling (MLPDS)
-  * Mitigated according to the /sys interface: YES (Not affected)
-  > STATUS: NOT VULNERABLE (your CPU vendor reported your CPU model as not affected)
-
-  CVE-2019-11091 aka RIDL, microarchitectural data sampling uncacheable memory (MDSUM)
-  * Mitigated according to the /sys interface: YES (Not affected)
-  > STATUS: NOT VULNERABLE (your CPU vendor reported your CPU model as not affected)
-
-  CVE-2019-11135 aka ZombieLoad V2, TSX Asynchronous Abort (TAA)
-  * Mitigated according to the /sys interface: YES (Not affected)
-  > STATUS: NOT VULNERABLE (your CPU vendor reported your CPU model as not affected)
-
-  CVE-2018-12207 aka No eXcuses, iTLB Multihit, machine check exception on page size changes (MCEPSC)
-  * Mitigated according to the /sys interface: YES (Not affected)
-  > STATUS: NOT VULNERABLE (your CPU vendor reported your CPU model as not affected)
-
-  CVE-2020-0543 aka Special Register Buffer Data Sampling (SRBDS)
-  * Mitigated according to the /sys interface: YES (Not affected)
-  > STATUS: NOT VULNERABLE (your CPU vendor reported your CPU model as not affected)
-
-  > SUMMARY: CVE-2017-5753:?? CVE-2017-5715:KO CVE-2017-5754:OK CVE-2018-3640:OK CVE-2018-3639:OK CVE-2018-3615:OK CVE-2018-3620:OK CVE-2018-3646:OK CVE-2018-12126:OK CVE-2018-12130:OK CVE-2018-12127:OK CVE-2019-11091:OK CVE-2019-11135:OK CVE-2018-12207:OK CVE-2020-0543:OK
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