1 Spectre and Meltdown Checks
2 ^^^^^^^^^^^^^^^^^^^^^^^^^^^
4 Following section displays the output of a running shell script to tell if
5 system is vulnerable against the several "speculative execution" CVEs that were
6 made public in 2018. Script is available on `Spectre & Meltdown Checker Github
7 <https://github.com/speed47/spectre-meltdown-checker>`_.
11 Spectre and Meltdown mitigation detection tool v0.44+
13 Checking for vulnerabilities on current system
14 Kernel is Linux 5.4.0-65-generic #73-Ubuntu SMP Mon Jan 18 17:25:17 UTC 2021 x86_64
15 CPU is Intel(R) Xeon(R) Platinum 8180 CPU @ 2.50GHz
18 * Hardware support (CPU microcode) for mitigation techniques
19 * Indirect Branch Restricted Speculation (IBRS)
20 * SPEC_CTRL MSR is available: YES
21 * CPU indicates IBRS capability: YES (SPEC_CTRL feature bit)
22 * Indirect Branch Prediction Barrier (IBPB)
23 * PRED_CMD MSR is available: YES
24 * CPU indicates IBPB capability: YES (SPEC_CTRL feature bit)
25 * Single Thread Indirect Branch Predictors (STIBP)
26 * SPEC_CTRL MSR is available: YES
27 * CPU indicates STIBP capability: YES (Intel STIBP feature bit)
28 * Speculative Store Bypass Disable (SSBD)
29 * CPU indicates SSBD capability: YES (Intel SSBD)
30 * L1 data cache invalidation
31 * FLUSH_CMD MSR is available: YES
32 * CPU indicates L1D flush capability: YES (L1D flush feature bit)
33 * Microarchitectural Data Sampling
34 * VERW instruction is available: YES (MD_CLEAR feature bit)
35 * Enhanced IBRS (IBRS_ALL)
36 * CPU indicates ARCH_CAPABILITIES MSR availability: NO
37 * ARCH_CAPABILITIES MSR advertises IBRS_ALL capability: NO
38 * CPU explicitly indicates not being vulnerable to Meltdown/L1TF (RDCL_NO): NO
39 * CPU explicitly indicates not being vulnerable to Variant 4 (SSB_NO): NO
40 * CPU/Hypervisor indicates L1D flushing is not necessary on this system: NO
41 * Hypervisor indicates host CPU might be vulnerable to RSB underflow (RSBA): NO
42 * CPU explicitly indicates not being vulnerable to Microarchitectural Data Sampling (MDS_NO): NO
43 * CPU explicitly indicates not being vulnerable to TSX Asynchronous Abort (TAA_NO): NO
44 * CPU explicitly indicates not being vulnerable to iTLB Multihit (PSCHANGE_MSC_NO): NO
45 * CPU explicitly indicates having MSR for TSX control (TSX_CTRL_MSR): NO
46 * CPU supports Transactional Synchronization Extensions (TSX): YES (RTM feature bit)
47 * CPU supports Software Guard Extensions (SGX): NO
48 * CPU supports Special Register Buffer Data Sampling (SRBDS): NO
49 * CPU microcode is known to cause stability problems: NO (family 0x6 model 0x55 stepping 0x4 ucode 0x2000065 cpuid 0x50654)
50 * CPU microcode is the latest known available version: NO (latest version is 0x2006b06 dated 2021/03/08 according to builtin firmwares DB v191+i20210217)
51 * CPU vulnerability to the speculative execution attack variants
52 * Affected by CVE-2017-5753 (Spectre Variant 1, bounds check bypass): YES
53 * Affected by CVE-2017-5715 (Spectre Variant 2, branch target injection): YES
54 * Affected by CVE-2017-5754 (Variant 3, Meltdown, rogue data cache load): YES
55 * Affected by CVE-2018-3640 (Variant 3a, rogue system register read): YES
56 * Affected by CVE-2018-3639 (Variant 4, speculative store bypass): YES
57 * Affected by CVE-2018-3615 (Foreshadow (SGX), L1 terminal fault): NO
58 * Affected by CVE-2018-3620 (Foreshadow-NG (OS), L1 terminal fault): YES
59 * Affected by CVE-2018-3646 (Foreshadow-NG (VMM), L1 terminal fault): YES
60 * Affected by CVE-2018-12126 (Fallout, microarchitectural store buffer data sampling (MSBDS)): YES
61 * Affected by CVE-2018-12130 (ZombieLoad, microarchitectural fill buffer data sampling (MFBDS)): YES
62 * Affected by CVE-2018-12127 (RIDL, microarchitectural load port data sampling (MLPDS)): YES
63 * Affected by CVE-2019-11091 (RIDL, microarchitectural data sampling uncacheable memory (MDSUM)): YES
64 * Affected by CVE-2019-11135 (ZombieLoad V2, TSX Asynchronous Abort (TAA)): YES
65 * Affected by CVE-2018-12207 (No eXcuses, iTLB Multihit, machine check exception on page size changes (MCEPSC)): YES
66 * Affected by CVE-2020-0543 (Special Register Buffer Data Sampling (SRBDS)): NO
68 CVE-2017-5753 aka Spectre Variant 1, bounds check bypass
69 * Mitigated according to the /sys interface: YES (Mitigation: usercopy/swapgs barriers and __user pointer sanitization)
70 * Kernel has array_index_mask_nospec: YES (1 occurrence(s) found of x86 64 bits array_index_mask_nospec())
71 * Kernel has the Red Hat/Ubuntu patch: NO
72 * Kernel has mask_nospec64 (arm64): NO
73 * Kernel has array_index_nospec (arm64): NO
74 > STATUS: NOT VULNERABLE (Mitigation: usercopy/swapgs barriers and __user pointer sanitization)
76 CVE-2017-5715 aka Spectre Variant 2, branch target injection
77 * Mitigated according to the /sys interface: YES (Mitigation: Full generic retpoline, IBPB: conditional, IBRS_FW, STIBP: conditional, RSB filling)
79 * Kernel is compiled with IBRS support: YES
80 * IBRS enabled and active: YES (for firmware code only)
81 * Kernel is compiled with IBPB support: YES
82 * IBPB enabled and active: YES
84 * Kernel has branch predictor hardening (arm): NO
85 * Kernel compiled with retpoline option: YES
86 * Kernel compiled with a retpoline-aware compiler: YES (kernel reports full retpoline compilation)
87 * Kernel supports RSB filling: YES
88 > STATUS: NOT VULNERABLE (Full retpoline + IBPB are mitigating the vulnerability)
90 CVE-2017-5754 aka Variant 3, Meltdown, rogue data cache load
91 * Mitigated according to the /sys interface: YES (Mitigation: PTI)
92 * Kernel supports Page Table Isolation (PTI): YES
93 * PTI enabled and active: YES
94 * Reduced performance impact of PTI: YES (CPU supports INVPCID, performance impact of PTI will be greatly reduced)
95 * Running as a Xen PV DomU: NO
96 > STATUS: NOT VULNERABLE (Mitigation: PTI)
98 CVE-2018-3640 aka Variant 3a, rogue system register read
99 * CPU microcode mitigates the vulnerability: YES
100 > STATUS: NOT VULNERABLE (your CPU microcode mitigates the vulnerability)
102 CVE-2018-3639 aka Variant 4, speculative store bypass
103 * Mitigated according to the /sys interface: YES (Mitigation: Speculative Store Bypass disabled via prctl and seccomp)
104 * Kernel supports disabling speculative store bypass (SSB): YES (found in /proc/self/status)
105 * SSB mitigation is enabled and active: YES (per-thread through prctl)
106 * SSB mitigation currently active for selected processes: YES (boltd fwupd irqbalance systemd-journald systemd-logind systemd-networkd systemd-resolved systemd-timesyncd systemd-udevd)
107 > STATUS: NOT VULNERABLE (Mitigation: Speculative Store Bypass disabled via prctl and seccomp)
109 CVE-2018-3615 aka Foreshadow (SGX), L1 terminal fault
110 * CPU microcode mitigates the vulnerability: N/A
111 > STATUS: NOT VULNERABLE (your CPU vendor reported your CPU model as not vulnerable)
113 CVE-2018-3620 aka Foreshadow-NG (OS), L1 terminal fault
114 * Mitigated according to the /sys interface: YES (Mitigation: PTE Inversion; VMX: conditional cache flushes, SMT vulnerable)
115 * Kernel supports PTE inversion: YES (found in kernel image)
116 * PTE inversion enabled and active: YES
117 > STATUS: NOT VULNERABLE (Mitigation: PTE Inversion; VMX: conditional cache flushes, SMT vulnerable)
119 CVE-2018-3646 aka Foreshadow-NG (VMM), L1 terminal fault
120 * Information from the /sys interface: Mitigation: PTE Inversion; VMX: conditional cache flushes, SMT vulnerable
121 * This system is a host running a hypervisor: NO
123 * EPT is disabled: NO
125 * L1D flush is supported by kernel: YES (found flush_l1d in /proc/cpuinfo)
126 * L1D flush enabled: YES (conditional flushes)
127 * Hardware-backed L1D flush supported: YES (performance impact of the mitigation will be greatly reduced)
128 * Hyper-Threading (SMT) is enabled: YES
129 > STATUS: NOT VULNERABLE (this system is not running a hypervisor)
131 CVE-2018-12126 aka Fallout, microarchitectural store buffer data sampling (MSBDS)
132 * Mitigated according to the /sys interface: YES (Mitigation: Clear CPU buffers; SMT vulnerable)
133 * Kernel supports using MD_CLEAR mitigation: YES (md_clear found in /proc/cpuinfo)
134 * Kernel mitigation is enabled and active: YES
135 * SMT is either mitigated or disabled: NO
136 > STATUS: NOT VULNERABLE (Your microcode and kernel are both up to date for this mitigation, and mitigation is enabled)
138 CVE-2018-12130 aka ZombieLoad, microarchitectural fill buffer data sampling (MFBDS)
139 * Mitigated according to the /sys interface: YES (Mitigation: Clear CPU buffers; SMT vulnerable)
140 * Kernel supports using MD_CLEAR mitigation: YES (md_clear found in /proc/cpuinfo)
141 * Kernel mitigation is enabled and active: YES
142 * SMT is either mitigated or disabled: NO
143 > STATUS: NOT VULNERABLE (Your microcode and kernel are both up to date for this mitigation, and mitigation is enabled)
145 CVE-2018-12127 aka RIDL, microarchitectural load port data sampling (MLPDS)
146 * Mitigated according to the /sys interface: YES (Mitigation: Clear CPU buffers; SMT vulnerable)
147 * Kernel supports using MD_CLEAR mitigation: YES (md_clear found in /proc/cpuinfo)
148 * Kernel mitigation is enabled and active: YES
149 * SMT is either mitigated or disabled: NO
150 > STATUS: NOT VULNERABLE (Your microcode and kernel are both up to date for this mitigation, and mitigation is enabled)
152 CVE-2019-11091 aka RIDL, microarchitectural data sampling uncacheable memory (MDSUM)
153 * Mitigated according to the /sys interface: YES (Mitigation: Clear CPU buffers; SMT vulnerable)
154 * Kernel supports using MD_CLEAR mitigation: YES (md_clear found in /proc/cpuinfo)
155 * Kernel mitigation is enabled and active: YES
156 * SMT is either mitigated or disabled: NO
157 > STATUS: NOT VULNERABLE (Your microcode and kernel are both up to date for this mitigation, and mitigation is enabled)
159 CVE-2019-11135 aka ZombieLoad V2, TSX Asynchronous Abort (TAA)
160 * Mitigated according to the /sys interface: YES (Mitigation: Clear CPU buffers; SMT vulnerable)
161 * TAA mitigation is supported by kernel: YES (found tsx_async_abort in kernel image)
162 * TAA mitigation enabled and active: YES (Mitigation: Clear CPU buffers; SMT vulnerable)
163 > STATUS: NOT VULNERABLE (Mitigation: Clear CPU buffers; SMT vulnerable)
165 CVE-2018-12207 aka No eXcuses, iTLB Multihit, machine check exception on page size changes (MCEPSC)
166 * Mitigated according to the /sys interface: YES (KVM: Mitigation: Split huge pages)
167 * This system is a host running a hypervisor: NO
168 * iTLB Multihit mitigation is supported by kernel: YES (found itlb_multihit in kernel image)
169 * iTLB Multihit mitigation enabled and active: YES (KVM: Mitigation: Split huge pages)
170 > STATUS: NOT VULNERABLE (this system is not running a hypervisor)
172 CVE-2020-0543 aka Special Register Buffer Data Sampling (SRBDS)
173 * Mitigated according to the /sys interface: YES (Not affected)
174 * SRBDS mitigation control is supported by the kernel: YES (found SRBDS implementation evidence in kernel image. Your kernel is up to date for SRBDS mitigation)
175 * SRBDS mitigation control is enabled and active: NO
176 > STATUS: NOT VULNERABLE (your CPU vendor reported your CPU model as not vulnerable)
178 > SUMMARY: CVE-2017-5753:OK CVE-2017-5715:OK 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
182 Spectre and Meltdown mitigation detection tool v0.44+
184 Checking for vulnerabilities on current system
185 Kernel is Linux 5.4.0-65-generic #73-Ubuntu SMP Mon Jan 18 17:27:25 UTC 2021 aarch64
186 CPU is ARM v8 model 0xd08
189 * CPU vulnerability to the speculative execution attack variants
190 * Affected by CVE-2017-5753 (Spectre Variant 1, bounds check bypass): YES
191 * Affected by CVE-2017-5715 (Spectre Variant 2, branch target injection): YES
192 * Affected by CVE-2017-5754 (Variant 3, Meltdown, rogue data cache load): NO
193 * Affected by CVE-2018-3640 (Variant 3a, rogue system register read): YES
194 * Affected by CVE-2018-3639 (Variant 4, speculative store bypass): YES
195 * Affected by CVE-2018-3615 (Foreshadow (SGX), L1 terminal fault): NO
196 * Affected by CVE-2018-3620 (Foreshadow-NG (OS), L1 terminal fault): NO
197 * Affected by CVE-2018-3646 (Foreshadow-NG (VMM), L1 terminal fault): NO
198 * Affected by CVE-2018-12126 (Fallout, microarchitectural store buffer data sampling (MSBDS)): NO
199 * Affected by CVE-2018-12130 (ZombieLoad, microarchitectural fill buffer data sampling (MFBDS)): NO
200 * Affected by CVE-2018-12127 (RIDL, microarchitectural load port data sampling (MLPDS)): NO
201 * Affected by CVE-2019-11091 (RIDL, microarchitectural data sampling uncacheable memory (MDSUM)): NO
202 * Affected by CVE-2019-11135 (ZombieLoad V2, TSX Asynchronous Abort (TAA)): NO
203 * Affected by CVE-2018-12207 (No eXcuses, iTLB Multihit, machine check exception on page size changes (MCEPSC)): NO
204 * Affected by CVE-2020-0543 (Special Register Buffer Data Sampling (SRBDS)): NO
206 CVE-2017-5753 aka Spectre Variant 1, bounds check bypass
207 * Mitigated according to the /sys interface: YES (Mitigation: __user pointer sanitization)
208 * Kernel has array_index_mask_nospec: NO
209 * Kernel has the Red Hat/Ubuntu patch: NO
210 * Kernel has mask_nospec64 (arm64): NO
211 * Kernel has array_index_nospec (arm64): NO
212 * Checking count of LFENCE instructions following a jump in kernel... NO (only 0 jump-then-lfence instructions found, should be >= 30 (heuristic))
213 > STATUS: NOT VULNERABLE (Mitigation: __user pointer sanitization)
215 CVE-2017-5715 aka Spectre Variant 2, branch target injection
216 * Mitigated according to the /sys interface: NO (Vulnerable)
218 * Kernel is compiled with IBRS support: YES
219 * IBRS enabled and active: NO
220 * Kernel is compiled with IBPB support: NO
221 * IBPB enabled and active: NO
223 * Kernel has branch predictor hardening (arm): YES
224 * Kernel compiled with retpoline option: NO
225 > STATUS: NOT VULNERABLE (Branch predictor hardening mitigates the vulnerability)
227 CVE-2017-5754 aka Variant 3, Meltdown, rogue data cache load
228 * Mitigated according to the /sys interface: YES (Not affected)
229 * Kernel supports Page Table Isolation (PTI): YES
230 * PTI enabled and active: UNKNOWN (dmesg truncated, please reboot and relaunch this script)
231 * Reduced performance impact of PTI: NO (PCID/INVPCID not supported, performance impact of PTI will be significant)
232 * Running as a Xen PV DomU: NO
233 > STATUS: NOT VULNERABLE (your CPU vendor reported your CPU model as not vulnerable)
235 CVE-2018-3640 aka Variant 3a, rogue system register read
236 * CPU microcode mitigates the vulnerability: NO
237 > STATUS: VULNERABLE (an up-to-date CPU microcode is needed to mitigate this vulnerability)
239 CVE-2018-3639 aka Variant 4, speculative store bypass
240 * Mitigated according to the /sys interface: NO (Vulnerable)
241 * Kernel supports disabling speculative store bypass (SSB): YES (found in /proc/self/status)
242 * SSB mitigation is enabled and active: NO
243 > STATUS: VULNERABLE (Your CPU doesnt support SSBD)
245 CVE-2018-3615 aka Foreshadow (SGX), L1 terminal fault
246 * CPU microcode mitigates the vulnerability: N/A
247 > STATUS: NOT VULNERABLE (your CPU vendor reported your CPU model as not vulnerable)
249 CVE-2018-3620 aka Foreshadow-NG (OS), L1 terminal fault
250 * Mitigated according to the /sys interface: YES (Not affected)
251 * Kernel supports PTE inversion: NO
252 * PTE inversion enabled and active: NO
253 > STATUS: NOT VULNERABLE (your CPU vendor reported your CPU model as not vulnerable)
255 CVE-2018-3646 aka Foreshadow-NG (VMM), L1 terminal fault
256 * Information from the /sys interface: Not affected
257 * This system is a host running a hypervisor: NO
259 * EPT is disabled: N/A (the kvm_intel module is not loaded)
261 * L1D flush is supported by kernel: NO
262 * L1D flush enabled: NO
263 * Hardware-backed L1D flush supported: NO (flush will be done in software, this is slower)
264 * Hyper-Threading (SMT) is enabled: UNKNOWN
265 > STATUS: NOT VULNERABLE (your CPU vendor reported your CPU model as not vulnerable)
267 CVE-2018-12126 aka Fallout, microarchitectural store buffer data sampling (MSBDS)
268 * Mitigated according to the /sys interface: YES (Not affected)
269 * Kernel supports using MD_CLEAR mitigation: NO
270 * Kernel mitigation is enabled and active: NO
271 * SMT is either mitigated or disabled: NO
272 > STATUS: NOT VULNERABLE (your CPU vendor reported your CPU model as not vulnerable)
274 CVE-2018-12130 aka ZombieLoad, microarchitectural fill buffer data sampling (MFBDS)
275 * Mitigated according to the /sys interface: YES (Not affected)
276 * Kernel supports using MD_CLEAR mitigation: NO
277 * Kernel mitigation is enabled and active: NO
278 * SMT is either mitigated or disabled: NO
279 > STATUS: NOT VULNERABLE (your CPU vendor reported your CPU model as not vulnerable)
281 CVE-2018-12127 aka RIDL, microarchitectural load port data sampling (MLPDS)
282 * Mitigated according to the /sys interface: YES (Not affected)
283 * Kernel supports using MD_CLEAR mitigation: NO
284 * Kernel mitigation is enabled and active: NO
285 * SMT is either mitigated or disabled: NO
286 > STATUS: NOT VULNERABLE (your CPU vendor reported your CPU model as not vulnerable)
288 CVE-2019-11091 aka RIDL, microarchitectural data sampling uncacheable memory (MDSUM)
289 * Mitigated according to the /sys interface: YES (Not affected)
290 * Kernel supports using MD_CLEAR mitigation: NO
291 * Kernel mitigation is enabled and active: NO
292 * SMT is either mitigated or disabled: NO
293 > STATUS: NOT VULNERABLE (your CPU vendor reported your CPU model as not vulnerable)
295 CVE-2019-11135 aka ZombieLoad V2, TSX Asynchronous Abort (TAA)
296 * Mitigated according to the /sys interface: YES (Not affected)
297 * TAA mitigation is supported by kernel: YES (found tsx_async_abort in kernel image)
298 * TAA mitigation enabled and active: NO
299 > STATUS: NOT VULNERABLE (your CPU vendor reported your CPU model as not vulnerable)
301 CVE-2018-12207 aka No eXcuses, iTLB Multihit, machine check exception on page size changes (MCEPSC)
302 * Mitigated according to the /sys interface: YES (Not affected)
303 * This system is a host running a hypervisor: NO
304 * iTLB Multihit mitigation is supported by kernel: YES (found itlb_multihit in kernel image)
305 * iTLB Multihit mitigation enabled and active: NO
306 > STATUS: NOT VULNERABLE (your CPU vendor reported your CPU model as not vulnerable)
308 CVE-2020-0543 aka Special Register Buffer Data Sampling (SRBDS)
309 * Mitigated according to the /sys interface: YES (Not affected)
310 * SRBDS mitigation control is supported by the kernel: NO
311 * SRBDS mitigation control is enabled and active: NO
312 > STATUS: NOT VULNERABLE (your CPU vendor reported your CPU model as not vulnerable)
314 > SUMMARY: CVE-2017-5753:OK CVE-2017-5715:OK CVE-2017-5754:OK CVE-2018-3640:KO CVE-2018-3639:KO 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
316 Need more detailed information about mitigation options? Use --explain
317 A false sense of security is worse than no security at all, see --disclaimer
319 spectre_meltdown_poll_results.stdout_lines:
320 Spectre and Meltdown mitigation detection tool v0.44+
322 Checking for vulnerabilities on current system
323 Kernel is Linux 5.4.0-65-generic #73-Ubuntu SMP Mon Jan 18 17:27:25 UTC 2021 aarch64
324 CPU is ARM v8 model 0xd08
327 * CPU vulnerability to the speculative execution attack variants
328 * Affected by CVE-2017-5753 (Spectre Variant 1, bounds check bypass): YES
329 * Affected by CVE-2017-5715 (Spectre Variant 2, branch target injection): YES
330 * Affected by CVE-2017-5754 (Variant 3, Meltdown, rogue data cache load): NO
331 * Affected by CVE-2018-3640 (Variant 3a, rogue system register read): YES
332 * Affected by CVE-2018-3639 (Variant 4, speculative store bypass): YES
333 * Affected by CVE-2018-3615 (Foreshadow (SGX), L1 terminal fault): NO
334 * Affected by CVE-2018-3620 (Foreshadow-NG (OS), L1 terminal fault): NO
335 * Affected by CVE-2018-3646 (Foreshadow-NG (VMM), L1 terminal fault): NO
336 * Affected by CVE-2018-12126 (Fallout, microarchitectural store buffer data sampling (MSBDS)): NO
337 * Affected by CVE-2018-12130 (ZombieLoad, microarchitectural fill buffer data sampling (MFBDS)): NO
338 * Affected by CVE-2018-12127 (RIDL, microarchitectural load port data sampling (MLPDS)): NO
339 * Affected by CVE-2019-11091 (RIDL, microarchitectural data sampling uncacheable memory (MDSUM)): NO
340 * Affected by CVE-2019-11135 (ZombieLoad V2, TSX Asynchronous Abort (TAA)): NO
341 * Affected by CVE-2018-12207 (No eXcuses, iTLB Multihit, machine check exception on page size changes (MCEPSC)): NO
342 * Affected by CVE-2020-0543 (Special Register Buffer Data Sampling (SRBDS)): NO
344 CVE-2017-5753 aka Spectre Variant 1, bounds check bypass
345 * Mitigated according to the /sys interface: YES (Mitigation: __user pointer sanitization)
346 * Kernel has array_index_mask_nospec: NO
347 * Kernel has the Red Hat/Ubuntu patch: NO
348 * Kernel has mask_nospec64 (arm64): NO
349 * Kernel has array_index_nospec (arm64): NO
350 * Checking count of LFENCE instructions following a jump in kernel... NO (only 0 jump-then-lfence instructions found, should be >= 30 (heuristic))
351 > STATUS: NOT VULNERABLE (Mitigation: __user pointer sanitization)
353 CVE-2017-5715 aka Spectre Variant 2, branch target injection
354 * Mitigated according to the /sys interface: NO (Vulnerable)
356 * Kernel is compiled with IBRS support: YES
357 * IBRS enabled and active: NO
358 * Kernel is compiled with IBPB support: NO
359 * IBPB enabled and active: NO
361 * Kernel has branch predictor hardening (arm): YES
362 * Kernel compiled with retpoline option: NO
363 > STATUS: NOT VULNERABLE (Branch predictor hardening mitigates the vulnerability)
365 CVE-2017-5754 aka Variant 3, Meltdown, rogue data cache load
366 * Mitigated according to the /sys interface: YES (Not affected)
367 * Kernel supports Page Table Isolation (PTI): YES
368 * PTI enabled and active: UNKNOWN (dmesg truncated, please reboot and relaunch this script)
369 * Reduced performance impact of PTI: NO (PCID/INVPCID not supported, performance impact of PTI will be significant)
370 * Running as a Xen PV DomU: NO
371 > STATUS: NOT VULNERABLE (your CPU vendor reported your CPU model as not vulnerable)
373 CVE-2018-3640 aka Variant 3a, rogue system register read
374 * CPU microcode mitigates the vulnerability: NO
375 > STATUS: VULNERABLE (an up-to-date CPU microcode is needed to mitigate this vulnerability)
377 CVE-2018-3639 aka Variant 4, speculative store bypass
378 * Mitigated according to the /sys interface: NO (Vulnerable)
379 * Kernel supports disabling speculative store bypass (SSB): YES (found in /proc/self/status)
380 * SSB mitigation is enabled and active: NO
381 > STATUS: VULNERABLE (Your CPU doesnt support SSBD)
383 CVE-2018-3615 aka Foreshadow (SGX), L1 terminal fault
384 * CPU microcode mitigates the vulnerability: N/A
385 > STATUS: NOT VULNERABLE (your CPU vendor reported your CPU model as not vulnerable)
387 CVE-2018-3620 aka Foreshadow-NG (OS), L1 terminal fault
388 * Mitigated according to the /sys interface: YES (Not affected)
389 * Kernel supports PTE inversion: NO
390 * PTE inversion enabled and active: NO
391 > STATUS: NOT VULNERABLE (your CPU vendor reported your CPU model as not vulnerable)
393 CVE-2018-3646 aka Foreshadow-NG (VMM), L1 terminal fault
394 * Information from the /sys interface: Not affected
395 * This system is a host running a hypervisor: NO
397 * EPT is disabled: N/A (the kvm_intel module is not loaded)
399 * L1D flush is supported by kernel: NO
400 * L1D flush enabled: NO
401 * Hardware-backed L1D flush supported: NO (flush will be done in software, this is slower)
402 * Hyper-Threading (SMT) is enabled: UNKNOWN
403 > STATUS: NOT VULNERABLE (your CPU vendor reported your CPU model as not vulnerable)
405 CVE-2018-12126 aka Fallout, microarchitectural store buffer data sampling (MSBDS)
406 * Mitigated according to the /sys interface: YES (Not affected)
407 * Kernel supports using MD_CLEAR mitigation: NO
408 * Kernel mitigation is enabled and active: NO
409 * SMT is either mitigated or disabled: NO
410 > STATUS: NOT VULNERABLE (your CPU vendor reported your CPU model as not vulnerable)
412 CVE-2018-12130 aka ZombieLoad, microarchitectural fill buffer data sampling (MFBDS)
413 * Mitigated according to the /sys interface: YES (Not affected)
414 * Kernel supports using MD_CLEAR mitigation: NO
415 * Kernel mitigation is enabled and active: NO
416 * SMT is either mitigated or disabled: NO
417 > STATUS: NOT VULNERABLE (your CPU vendor reported your CPU model as not vulnerable)
419 CVE-2018-12127 aka RIDL, microarchitectural load port data sampling (MLPDS)
420 * Mitigated according to the /sys interface: YES (Not affected)
421 * Kernel supports using MD_CLEAR mitigation: NO
422 * Kernel mitigation is enabled and active: NO
423 * SMT is either mitigated or disabled: NO
424 > STATUS: NOT VULNERABLE (your CPU vendor reported your CPU model as not vulnerable)
426 CVE-2019-11091 aka RIDL, microarchitectural data sampling uncacheable memory (MDSUM)
427 * Mitigated according to the /sys interface: YES (Not affected)
428 * Kernel supports using MD_CLEAR mitigation: NO
429 * Kernel mitigation is enabled and active: NO
430 * SMT is either mitigated or disabled: NO
431 > STATUS: NOT VULNERABLE (your CPU vendor reported your CPU model as not vulnerable)
433 CVE-2019-11135 aka ZombieLoad V2, TSX Asynchronous Abort (TAA)
434 * Mitigated according to the /sys interface: YES (Not affected)
435 * TAA mitigation is supported by kernel: YES (found tsx_async_abort in kernel image)
436 * TAA mitigation enabled and active: NO
437 > STATUS: NOT VULNERABLE (your CPU vendor reported your CPU model as not vulnerable)
439 CVE-2018-12207 aka No eXcuses, iTLB Multihit, machine check exception on page size changes (MCEPSC)
440 * Mitigated according to the /sys interface: YES (Not affected)
441 * This system is a host running a hypervisor: NO
442 * iTLB Multihit mitigation is supported by kernel: YES (found itlb_multihit in kernel image)
443 * iTLB Multihit mitigation enabled and active: NO
444 > STATUS: NOT VULNERABLE (your CPU vendor reported your CPU model as not vulnerable)
446 CVE-2020-0543 aka Special Register Buffer Data Sampling (SRBDS)
447 * Mitigated according to the /sys interface: YES (Not affected)
448 * SRBDS mitigation control is supported by the kernel: NO
449 * SRBDS mitigation control is enabled and active: NO
450 > STATUS: NOT VULNERABLE (your CPU vendor reported your CPU model as not vulnerable)
452 > SUMMARY: CVE-2017-5753:OK CVE-2017-5715:OK CVE-2017-5754:OK CVE-2018-3640:KO CVE-2018-3639:KO 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