mirror of
https://github.com/speed47/spectre-meltdown-checker
synced 2024-08-29 23:33:41 +02:00
commit
65c123f309
@ -297,6 +297,13 @@ is_cpu_vulnerable()
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variant3=immune
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_debug "is_cpu_vulnerable: RDCL_NO is set so not vuln to meltdown"
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fi
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if [ "$capabilities_ssb_no" = 1 ]; then
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# capability bit for future Intel processor that will explicitly state
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# that they're not vulnerable to Variant 4
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# this var is set in check_cpu()
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variant4=immune
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_debug "is_cpu_vulnerable: SSB_NO is set so not vuln to variant4"
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fi
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elif is_amd; then
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# AMD revised their statement about variant2 => vulnerable
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# https://www.amd.com/en/corporate/speculative-execution
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@ -358,14 +365,23 @@ is_cpu_vulnerable()
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variant3a=vuln
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else
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_debug "checking cpu$i: this arm non vulnerable to variant3a"
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[ -z "$variant3" ] && variant3a=immune
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[ -z "$variant3a" ] && variant3a=immune
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fi
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# for variant4, only A57-72-73-75 are vulnerable
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if [ "$cpuarch" = 8 ] && echo "$cpupart" | grep -Eq '^0xd0[789a]$'; then
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_debug "checking cpu$i: arm A57-A72-A73-A75 vulnerable to variant4"
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variant4=vuln
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else
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_debug "checking cpu$i: this arm non vulnerable to variant4"
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[ -z "$variant4" ] && variant4=immune
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fi
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fi
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_debug "is_cpu_vulnerable: for cpu$i and so far, we have <$variant1> <$variant2> <$variant3> <$variant3a> <$variant4>"
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done
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fi
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# from the information we have for now, it seems that CPUs that are vulnerable to variant1 are also vulnerable to variant4
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variant4=$variant1
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[ -z "$variant4" ] && variant4=$variant1
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_debug "is_cpu_vulnerable: temp results are <$variant1> <$variant2> <$variant3> <$variant3a> <$variant4>"
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# if at least one of the cpu is vulnerable, then the system is vulnerable
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[ "$variant1" = "immune" ] && variant1=1 || variant1=0
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