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feat(variant2): better explanation when kernel supports IBRS but CPU does not

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Stéphane Lesimple
2018-02-16 10:34:01 +01:00
parent fef380d66f
commit b4ac5fcbe3
1 changed files with 3 additions and 1 deletions
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4
spectre-meltdown-checker.sh
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@@ -1223,7 +1223,7 @@ check_cpu()
_warn "the mitigations for Spectre), or upgrade to a newer one if available."
_warn
else
pstatus green NO "$ucode_found"
pstatus blue NO "$ucode_found"
fi
_info "* CPU vulnerability to the three speculative execution attacks variants"
@@ -1648,6 +1648,8 @@ check_variant2()
pvulnstatus $cve OK "IBRS is mitigating the vulnerability"
elif [ "$ibpb_enabled" = 2 ]; then
pvulnstatus $cve OK "Full IBPB is mitigating the vulnerability"
elif [ "$ibrs_supported" = 1 ] && [ "$cpuid_spec_ctrl" != 1 ]; then
pvulnstatus $cve VULN "Your kernel is compiled with IBRS but your CPU microcode is lacking support to successfully mitigate the vulnerability"
else
pvulnstatus $cve VULN "IBRS hardware + kernel support OR kernel with retpoline are needed to mitigate the vulnerability"
fi