dsanchez/spectre-meltdown-checker
1
0
Fork 0
mirror of https://github.com/speed47/spectre-meltdown-checker synced 2024-12-23 04:43:37 +01:00
Code Issues Releases Wiki Activity

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

Browse Source
This commit is contained in:
Stéphane Lesimple 2018-02-16 10:34:01 +01:00
parent fef380d66f
commit b4ac5fcbe3
1 changed files with 3 additions and 1 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

4
spectre-meltdown-checker.sh
View File

@ -1223,7 +1223,7 @@ check_cpu()
_warn "the mitigations for Spectre), or upgrade to a newer one if available." _warn "the mitigations for Spectre), or upgrade to a newer one if available."
_warn _warn
else else
pstatus green NO "$ucode_found" pstatus blue NO "$ucode_found"
fi fi
_info "* CPU vulnerability to the three speculative execution attacks variants" _info "* CPU vulnerability to the three speculative execution attacks variants"
@ -1648,6 +1648,8 @@ check_variant2()
pvulnstatus $cve OK "IBRS is mitigating the vulnerability" pvulnstatus $cve OK "IBRS is mitigating the vulnerability"
elif [ "$ibpb_enabled" = 2 ]; then elif [ "$ibpb_enabled" = 2 ]; then
pvulnstatus $cve OK "Full IBPB is mitigating the vulnerability" 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 else
pvulnstatus $cve VULN "IBRS hardware + kernel support OR kernel with retpoline are needed to mitigate the vulnerability" pvulnstatus $cve VULN "IBRS hardware + kernel support OR kernel with retpoline are needed to mitigate the vulnerability"
fi fi