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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 Intel Atom(R) P5362 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 (SPEC_CTRL feature bit)
- * Indirect Branch Prediction Barrier (IBPB)
- * CPU indicates IBPB capability: YES (SPEC_CTRL feature bit)
- * Single Thread Indirect Branch Predictors (STIBP)
- * SPEC_CTRL MSR is available: YES
- * CPU indicates STIBP capability: YES (Intel STIBP feature bit)
- * Speculative Store Bypass Disable (SSBD)
- * CPU indicates SSBD capability: YES (Intel SSBD)
- * L1 data cache invalidation
- * CPU indicates L1D flush capability: YES (L1D flush feature bit)
- * Microarchitectural Data Sampling
- * VERW instruction is available: YES (MD_CLEAR feature bit)
- * Indirect Branch Predictor Controls
- * Indirect Predictor Disable feature is available: NO
- * Bottomless RSB Disable feature is available: NO
- * BHB-Focused Indirect Predictor Disable feature is available: NO
- * Enhanced IBRS (IBRS_ALL)
- * CPU indicates ARCH_CAPABILITIES MSR availability: YES
- * ARCH_CAPABILITIES MSR advertises IBRS_ALL capability: YES
- * CPU explicitly indicates not being affected by Meltdown/L1TF (RDCL_NO): YES
- * CPU explicitly indicates not being affected by Variant 4 (SSB_NO): NO
- * CPU/Hypervisor indicates L1D flushing is not necessary on this system: YES
- * Hypervisor indicates host CPU might be affected by RSB underflow (RSBA): NO
- * CPU explicitly indicates not being affected by Microarchitectural Data Sampling (MDS_NO): YES
- * CPU explicitly indicates not being affected by TSX Asynchronous Abort (TAA_NO): NO
- * CPU explicitly indicates not being affected by iTLB Multihit (PSCHANGE_MSC_NO): YES
- * CPU explicitly indicates having MSR for TSX control (TSX_CTRL_MSR): 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 0x6 model 0x86 stepping 0x7 ucode 0x4c000019 cpuid 0x80667)
- * CPU microcode is the latest known available version: UNKNOWN (latest microcode version for your CPU model is unknown)
- * 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): YES
- * 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)): YES
- * 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: Enhanced IBRS, IBPB: conditional, RSB filling)
- > STATUS: VULNERABLE (IBRS+IBPB or 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 microcode mitigates the vulnerability)
-
- 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 (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 \ No newline at end of file