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https://github.com/speed47/spectre-meltdown-checker
synced 2024-11-07 06:33:38 +01:00
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9b7b09ada3
...
44223c5308
6
.github/workflows/check.yml
vendored
6
.github/workflows/check.yml
vendored
@ -24,7 +24,7 @@ jobs:
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fi
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- name: check direct execution
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run: |
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expected=18
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expected=17
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nb=$(sudo ./spectre-meltdown-checker.sh --batch json | jq '.[]|.CVE' | wc -l)
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if [ "$nb" -ne "$expected" ]; then
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echo "Invalid number of CVEs reported: $nb instead of $expected"
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@ -34,7 +34,7 @@ jobs:
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fi
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- name: check docker-compose run execution
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run: |
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expected=18
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expected=17
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docker-compose build
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nb=$(docker-compose run --rm spectre-meltdown-checker --batch json | jq '.[]|.CVE' | wc -l)
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if [ "$nb" -ne "$expected" ]; then
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@ -45,7 +45,7 @@ jobs:
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fi
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- name: check docker run execution
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run: |
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expected=18
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expected=17
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docker build -t spectre-meltdown-checker .
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nb=$(docker run --rm --privileged -v /boot:/boot:ro -v /dev/cpu:/dev/cpu:ro -v /lib/modules:/lib/modules:ro spectre-meltdown-checker --batch json | jq '.[]|.CVE' | wc -l)
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if [ "$nb" -ne "$expected" ]; then
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@ -21,7 +21,6 @@ CVE
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[CVE-2018-12207](https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2018-12207) | Machine Check Exception on Page Size Changes | MCEPSC, No eXcuses, iTLB Multihit
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[CVE-2020-0543](https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2020-0543) | Special Register Buffer Data Sampling | SRBDS
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[CVE-2022-40982](https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2022-40982) | Gather Data Sampling | GDS, Downfall
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[CVE-2023-20569](https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2023-20569) | Return Address Security | Inception, RAS, SRSO
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[CVE-2023-20593](https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2023-20593) | Cross-Process Information Leak | Zenbleed
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Supported operating systems:
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@ -188,12 +187,6 @@ docker run --rm --privileged -v /boot:/boot:ro -v /dev/cpu:/dev/cpu:ro -v /lib/m
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- Mitigation: either microcode update or disabling AVX feature
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- Performance impact of the mitigation: TBD
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**CVE-2023-20569** Return Address Security (Inception)
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- Impact: Kernel & all software
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- Mitigation: updated kernel & microcode
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- Performance impact of the mitigation: low to significant depending on the mitigation
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**CVE-2023-20593** Cross-Process Information Leak (Zenbleed)
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- Impact: Kernel & all software
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@ -177,7 +177,7 @@ global_critical=0
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global_unknown=0
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nrpe_vuln=''
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supported_cve_list='CVE-2017-5753 CVE-2017-5715 CVE-2017-5754 CVE-2018-3640 CVE-2018-3639 CVE-2018-3615 CVE-2018-3620 CVE-2018-3646 CVE-2018-12126 CVE-2018-12130 CVE-2018-12127 CVE-2019-11091 CVE-2019-11135 CVE-2018-12207 CVE-2020-0543 CVE-2023-20593 CVE-2022-40982 CVE-2023-20569'
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supported_cve_list='CVE-2017-5753 CVE-2017-5715 CVE-2017-5754 CVE-2018-3640 CVE-2018-3639 CVE-2018-3615 CVE-2018-3620 CVE-2018-3646 CVE-2018-12126 CVE-2018-12130 CVE-2018-12127 CVE-2019-11091 CVE-2019-11135 CVE-2018-12207 CVE-2020-0543 CVE-2023-20593 CVE-2022-40982'
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# find a sane command to print colored messages, we prefer `printf` over `echo`
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# because `printf` behavior is more standard across Linux/BSD
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@ -304,7 +304,6 @@ cve2name()
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CVE-2020-0543) echo "Special Register Buffer Data Sampling (SRBDS)";;
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CVE-2023-20593) echo "Zenbleed, cross-process information leak";;
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CVE-2022-40982) echo "Downfall, gather data sampling (GDS)";;
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CVE-2023-20569) echo "Inception, return address security (RAS)";;
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*) echo "$0: error: invalid CVE '$1' passed to cve2name()" >&2; exit 255;;
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esac
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}
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@ -331,7 +330,6 @@ _is_cpu_affected_cached()
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CVE-2020-0543) return $variant_srbds;;
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CVE-2023-20593) return $variant_zenbleed;;
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CVE-2022-40982) return $variant_downfall;;
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CVE-2023-20569) return $variant_inception;;
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*) echo "$0: error: invalid variant '$1' passed to is_cpu_affected()" >&2; exit 255;;
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esac
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}
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@ -399,9 +397,8 @@ is_cpu_affected()
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variant_taa=''
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variant_itlbmh=''
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variant_srbds=''
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# Zenbleed and Inception are both AMD specific, look for "is_amd" below:
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# Zenbleed is AMD specific, look for "is_amd" below:
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variant_zenbleed=immune
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variant_inception=immune
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# Downfall is Intel specific, look for "is_intel" below:
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variant_downfall=immune
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@ -563,12 +560,6 @@ is_cpu_affected()
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amd_legacy_erratum "$(amd_model_range 0x17 0x30 0x0 0x4f 0xf)" && variant_zenbleed=vuln
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amd_legacy_erratum "$(amd_model_range 0x17 0x60 0x0 0x7f 0xf)" && variant_zenbleed=vuln
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amd_legacy_erratum "$(amd_model_range 0x17 0xa0 0x0 0xaf 0xf)" && variant_zenbleed=vuln
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# Inception (according to kernel, zen 1 to 4)
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if [ "$cpu_family" = $(( 0x17 )) ] || [ "$cpu_family" = $(( 0x19 )) ]; then
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variant_inception=vuln
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fi
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elif [ "$cpu_vendor" = CAVIUM ]; then
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variant3=immune
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variant3a=immune
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@ -711,22 +702,21 @@ is_cpu_affected()
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fi
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_debug "is_cpu_affected: temp results are <$variant1> <$variant2> <$variant3> <$variant3a> <$variant4> <$variantl1tf>"
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[ "$variant1" = "immune" ] && variant1=1 || variant1=0
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[ "$variant2" = "immune" ] && variant2=1 || variant2=0
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[ "$variant3" = "immune" ] && variant3=1 || variant3=0
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[ "$variant3a" = "immune" ] && variant3a=1 || variant3a=0
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[ "$variant4" = "immune" ] && variant4=1 || variant4=0
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[ "$variantl1tf" = "immune" ] && variantl1tf=1 || variantl1tf=0
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[ "$variant_msbds" = "immune" ] && variant_msbds=1 || variant_msbds=0
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[ "$variant_mfbds" = "immune" ] && variant_mfbds=1 || variant_mfbds=0
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[ "$variant_mlpds" = "immune" ] && variant_mlpds=1 || variant_mlpds=0
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[ "$variant_mdsum" = "immune" ] && variant_mdsum=1 || variant_mdsum=0
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[ "$variant_taa" = "immune" ] && variant_taa=1 || variant_taa=0
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[ "$variant_itlbmh" = "immune" ] && variant_itlbmh=1 || variant_itlbmh=0
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[ "$variant_srbds" = "immune" ] && variant_srbds=1 || variant_srbds=0
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[ "$variant_zenbleed" = "immune" ] && variant_zenbleed=1 || variant_zenbleed=0
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[ "$variant_downfall" = "immune" ] && variant_downfall=1 || variant_downfall=0
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[ "$variant_inception" = "immune" ] && variant_inception=1 || variant_inception=0
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[ "$variant1" = "immune" ] && variant1=1 || variant1=0
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[ "$variant2" = "immune" ] && variant2=1 || variant2=0
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[ "$variant3" = "immune" ] && variant3=1 || variant3=0
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[ "$variant3a" = "immune" ] && variant3a=1 || variant3a=0
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[ "$variant4" = "immune" ] && variant4=1 || variant4=0
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[ "$variantl1tf" = "immune" ] && variantl1tf=1 || variantl1tf=0
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[ "$variant_msbds" = "immune" ] && variant_msbds=1 || variant_msbds=0
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[ "$variant_mfbds" = "immune" ] && variant_mfbds=1 || variant_mfbds=0
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[ "$variant_mlpds" = "immune" ] && variant_mlpds=1 || variant_mlpds=0
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[ "$variant_mdsum" = "immune" ] && variant_mdsum=1 || variant_mdsum=0
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[ "$variant_taa" = "immune" ] && variant_taa=1 || variant_taa=0
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[ "$variant_itlbmh" = "immune" ] && variant_itlbmh=1 || variant_itlbmh=0
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[ "$variant_srbds" = "immune" ] && variant_srbds=1 || variant_srbds=0
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[ "$variant_zenbleed" = "immune" ] && variant_zenbleed=1 || variant_zenbleed=0
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[ "$variant_downfall" = "immune" ] && variant_downfall=1 || variant_downfall=0
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variantl1tf_sgx="$variantl1tf"
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# even if we are affected to L1TF, if there's no SGX, we're not affected to the original foreshadow
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[ "$cpuid_sgx" = 0 ] && variantl1tf_sgx=1
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@ -1301,7 +1291,7 @@ while [ -n "${1:-}" ]; do
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fi
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case "$2" in
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help) echo "The following parameters are supported for --variant (can be used multiple times):";
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echo "1, 2, 3, 3a, 4, msbds, mfbds, mlpds, mdsum, l1tf, taa, mcepsc, srbds, zenbleed, downfall, inception";
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echo "1, 2, 3, 3a, 4, msbds, mfbds, mlpds, mdsum, l1tf, taa, mcepsc, srbds, zenbleed, downfall";
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exit 0;;
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1) opt_cve_list="$opt_cve_list CVE-2017-5753"; opt_cve_all=0;;
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2) opt_cve_list="$opt_cve_list CVE-2017-5715"; opt_cve_all=0;;
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@ -1318,7 +1308,6 @@ while [ -n "${1:-}" ]; do
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srbds) opt_cve_list="$opt_cve_list CVE-2020-0543"; opt_cve_all=0;;
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zenbleed) opt_cve_list="$opt_cve_list CVE-2023-20593"; opt_cve_all=0;;
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downfall) opt_cve_list="$opt_cve_list CVE-2022-40982"; opt_cve_all=0;;
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inception) opt_cve_list="$opt_cve_list CVE-2023-20569"; opt_cve_all=0;;
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*)
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echo "$0: error: invalid parameter '$2' for --variant, see --variant help for a list" >&2;
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exit 255
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@ -1413,7 +1402,6 @@ pvulnstatus()
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CVE-2020-0543) aka="SRBDS";;
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CVE-2023-20593) aka="ZENBLEED";;
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CVE-2022-40982) aka="DOWNFALL";;
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CVE-2023-20569) aka="INCEPTION";;
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*) echo "$0: error: invalid CVE '$1' passed to pvulnstatus()" >&2; exit 255;;
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esac
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@ -2704,8 +2692,7 @@ sys_interface_check()
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# write_msr
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# param1 (mandatory): MSR, can be in hex or decimal.
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# param2 (optional): value to write, can be in hex or decimal.
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# param3 (optional): CPU index, starting from 0. Default 0.
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# param2 (optional): CPU index, starting from 0. Default 0.
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WRITE_MSR_RET_OK=0
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WRITE_MSR_RET_KO=1
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WRITE_MSR_RET_ERR=2
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@ -2741,8 +2728,6 @@ write_msr_one_core()
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_core="$1"
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_msr_dec=$(( $2 ))
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_msr=$(printf "0x%x" "$_msr_dec")
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_value_dec=$(( $3 ))
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_value=$(printf "0x%x" "$_value_dec")
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write_msr_msg='unknown error'
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: "${msr_locked_down:=0}"
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@ -2767,7 +2752,7 @@ write_msr_one_core()
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_write_denied=0
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if [ "$os" != Linux ]; then
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cpucontrol -m "$_msr=$_value" "/dev/cpuctl$_core" >/dev/null 2>&1; ret=$?
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cpucontrol -m "$_msr=0" "/dev/cpuctl$_core" >/dev/null 2>&1; ret=$?
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else
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# for Linux
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# convert to decimal
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@ -2777,16 +2762,16 @@ write_msr_one_core()
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# if wrmsr is available, use it
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elif command -v wrmsr >/dev/null 2>&1 && [ "${SMC_NO_WRMSR:-}" != 1 ]; then
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_debug "write_msr: using wrmsr"
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wrmsr $_msr_dec $_value_dec 2>/dev/null; ret=$?
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wrmsr $_msr_dec 0 2>/dev/null; ret=$?
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# ret=4: msr doesn't exist, ret=127: msr.allow_writes=off
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[ "$ret" = 127 ] && _write_denied=1
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# or fallback to dd if it supports seek_bytes, we prefer it over perl because we can tell the difference between EPERM and EIO
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elif dd if=/dev/null of=/dev/null bs=8 count=1 seek="$_msr_dec" oflag=seek_bytes 2>/dev/null && [ "${SMC_NO_DD:-}" != 1 ]; then
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_debug "write_msr: using dd"
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awk "BEGIN{printf \"%c\", $_value_dec}" | dd of=/dev/cpu/"$_core"/msr bs=8 count=1 seek="$_msr_dec" oflag=seek_bytes 2>/dev/null; ret=$?
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dd if=/dev/zero of=/dev/cpu/"$_core"/msr bs=8 count=1 seek="$_msr_dec" oflag=seek_bytes 2>/dev/null; ret=$?
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# if it failed, inspect stderrto look for EPERM
|
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if [ "$ret" != 0 ]; then
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if awk "BEGIN{printf \"%c\", $_value_dec}" | dd of=/dev/cpu/"$_core"/msr bs=8 count=1 seek="$_msr_dec" oflag=seek_bytes 2>&1 | grep -qF 'Operation not permitted'; then
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if dd if=/dev/zero of=/dev/cpu/"$_core"/msr bs=8 count=1 seek="$_msr_dec" oflag=seek_bytes 2>&1 | grep -qF 'Operation not permitted'; then
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_write_denied=1
|
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fi
|
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fi
|
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@ -2794,7 +2779,7 @@ write_msr_one_core()
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elif command -v perl >/dev/null 2>&1 && [ "${SMC_NO_PERL:-}" != 1 ]; then
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_debug "write_msr: using perl"
|
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ret=1
|
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perl -e "open(M,'>','/dev/cpu/$_core/msr') and seek(M,$_msr_dec,0) and exit(syswrite(M,pack(v4,$_value_dec)))"; [ $? -eq 8 ] && ret=0
|
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perl -e "open(M,'>','/dev/cpu/$_core/msr') and seek(M,$_msr_dec,0) and exit(syswrite(M,pack('H16',0)))"; [ $? -eq 8 ] && ret=0
|
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else
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||||
_debug "write_msr: got no wrmsr, perl or recent enough dd!"
|
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mockme=$(printf "%b\n%b" "$mockme" "SMC_MOCK_WRMSR_${_msr}_RET=$WRITE_MSR_RET_ERR")
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@ -2839,7 +2824,7 @@ write_msr_one_core()
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else
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ret=$WRITE_MSR_RET_KO
|
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fi
|
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_debug "write_msr: for cpu $_core on msr $_msr, value=$_value, ret=$ret"
|
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_debug "write_msr: for cpu $_core on msr $_msr, ret=$ret"
|
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mockme=$(printf "%b\n%b" "$mockme" "SMC_MOCK_WRMSR_${_msr}_RET=$ret")
|
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return $ret
|
||||
}
|
||||
@ -3533,29 +3518,6 @@ check_cpu()
|
||||
|
||||
fi
|
||||
|
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if is_amd || is_hygon; then
|
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_info " * Selective Branch Predictor Barrier (SBPB)"
|
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_info_nol " * PRED_CMD MSR supports SBPB bit write: "
|
||||
|
||||
if [ "$opt_allow_msr_write" = 1 ]; then
|
||||
# the MSR PRED_SBPB is at offset 0x49, BIT(7), write-only
|
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write_msr 0x49 128; ret=$?
|
||||
if [ $ret = $WRITE_MSR_RET_OK ]; then
|
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pstatus green YES
|
||||
cpuid_sbpb=1
|
||||
elif [ $ret = $WRITE_MSR_RET_KO ]; then
|
||||
pstatus yellow NO
|
||||
cpuid_sbpb=2
|
||||
else
|
||||
pstatus yellow UNKNOWN "$write_msr_msg"
|
||||
cpuid_sbpb=3
|
||||
fi
|
||||
else
|
||||
pstatus yellow UNKNOWN "not allowed to write msr"
|
||||
cpuid_sbpb=3
|
||||
fi
|
||||
fi
|
||||
|
||||
_info_nol " * CPU supports Transactional Synchronization Extensions (TSX): "
|
||||
ret=$READ_CPUID_RET_KO
|
||||
cpuid_rtm=0
|
||||
@ -6321,174 +6283,6 @@ check_CVE_2022_40982_linux() {
|
||||
fi
|
||||
}
|
||||
|
||||
#######################
|
||||
# Inception section
|
||||
|
||||
check_CVE_2023_20569() {
|
||||
cve='CVE-2023-20569'
|
||||
_info "\033[1;34m$cve aka '$(cve2name "$cve")'\033[0m"
|
||||
if [ "$os" = Linux ]
|
||||
then
|
||||
check_CVE_2023_20569_linux
|
||||
else
|
||||
_warn "Unsupported OS ($os)."
|
||||
fi
|
||||
}
|
||||
|
||||
check_CVE_2023_20569_linux() {
|
||||
status=UNK
|
||||
sys_interface_available=0
|
||||
msg=''
|
||||
|
||||
if sys_interface_check "/sys/devices/system/cpu/vulnerabilities/spec_rstack_overflow"; then
|
||||
# this kernel has the /sys interface, trust it over everything
|
||||
sys_interface_available=1
|
||||
fi
|
||||
|
||||
if [ "$opt_sysfs_only" != 1 ]; then
|
||||
_info_nol "* Kernel supports mitigation: "
|
||||
if [ -n "$kernel_err" ]; then
|
||||
kernel_sro_err="$kernel_err"
|
||||
elif grep -q 'spec_rstack_overflow' "$kernel"; then
|
||||
kernel_sro="found spec_rstack_overflow in kernel image"
|
||||
fi
|
||||
if [ -n "$kernel_sro" ]; then
|
||||
pstatus green YES "$kernel_sro"
|
||||
elif [ -n "$kernel_sro_err" ]; then
|
||||
pstatus yellow UNKNOWN "$kernel_sro_err"
|
||||
else
|
||||
pstatus yellow NO
|
||||
fi
|
||||
|
||||
_info_nol "* Kernel compiled with SRSO support: "
|
||||
if [ -r "$opt_config" ]; then
|
||||
if grep -q '^CONFIG_CPU_SRSO=y' "$opt_config"; then
|
||||
pstatus green YES
|
||||
kernel_srso="CONFIG_CPU_SRSO=y found in kernel config"
|
||||
else
|
||||
pstatus yellow NO "required for safe RET and ibpb_on_vmexit mitigations"
|
||||
fi
|
||||
else
|
||||
# https://github.com/torvalds/linux/commit/138bcddb86d8a4f842e4ed6f0585abc9b1a764ff#diff-17bd24a7a7850613cced545790ac30646097e8d6207348c2bd1845f397acb390R2313
|
||||
if [ -n "$kernel_err" ]; then
|
||||
pstatus yellow UNKNOWN "$kernel_err"
|
||||
elif grep -q 'WARNING: kernel not compiled with CPU_SRSO' "$kernel"; then
|
||||
# this msg is optimized out at compile time if the option is not enabled, see commit referenced above
|
||||
# if it's present, then SRSO is NOT compiled in
|
||||
pstatus yellow NO "kernel not compiled with CPU_SRSO"
|
||||
else
|
||||
# if it's not present, then SRSO is compiled in IF kernel_sro==1, otherwise we're just
|
||||
# in front of an old kernel that doesn't have the mitigation logic at all
|
||||
if [ "$kernel_sro" = 1 ]; then
|
||||
kernel_srso="SRSO mitigation logic is compiled in the kernel"
|
||||
pstatus green OK "$kernel_srso"
|
||||
else
|
||||
pstatus yellow NO "your kernel is too old and doesn't have the mitigation logic"
|
||||
fi
|
||||
fi
|
||||
fi
|
||||
|
||||
_info_nol "* Kernel compiled with IBPB_ENTRY support: "
|
||||
if [ -r "$opt_config" ]; then
|
||||
if grep -q '^CONFIG_CPU_IBPB_ENTRY=y' "$opt_config"; then
|
||||
pstatus green YES
|
||||
kernel_ibpb_entry="CONFIG_CPU_IBPB_ENTRY=y found in kernel config"
|
||||
else
|
||||
pstatus yellow NO
|
||||
fi
|
||||
else
|
||||
# https://github.com/torvalds/linux/commit/138bcddb86d8a4f842e4ed6f0585abc9b1a764ff#diff-17bd24a7a7850613cced545790ac30646097e8d6207348c2bd1845f397acb390R2325
|
||||
if [ -n "$kernel_err" ]; then
|
||||
pstatus yellow UNKNOWN "$kernel_err"
|
||||
elif grep -q 'WARNING: kernel not compiled with CPU_IBPB_ENTRY' "$kernel"; then
|
||||
# this msg is optimized out at compile time if the option is not enabled, see commit referenced above
|
||||
# if it's present, then IBPB_ENTRY is NOT compiled in
|
||||
pstatus yellow NO "kernel not compiled with CPU_IBPB_ENTRY"
|
||||
else
|
||||
# if it's not present, then IBPB_ENTRY is compiled in IF kernel_sro==1, otherwise we're just
|
||||
# in front of an old kernel that doesn't have the mitigation logic at all
|
||||
if [ "$kernel_sro" = 1 ]; then
|
||||
kernel_ibpb_entry="IBPB_ENTRY mitigation logic is compiled in the kernel"
|
||||
pstatus green OK "$kernel_ibpb_entry"
|
||||
else
|
||||
pstatus yellow NO "your kernel is too old and doesn't have the mitigation logic"
|
||||
fi
|
||||
fi
|
||||
fi
|
||||
|
||||
# Zen & Zen2 : if the right IBPB microcode applied + SMT off --> not vuln
|
||||
if [ "$cpu_family" = $(( 0x17 )) ]; then
|
||||
_info_nol "* CPU supports IBPB: "
|
||||
if [ -n "$cpuid_ibpb" ]; then
|
||||
pstatus green YES "$cpuid_ibpb"
|
||||
else
|
||||
pstatus yellow NO
|
||||
fi
|
||||
|
||||
_info_nol "* Hyper-Threading (SMT) is enabled: "
|
||||
is_cpu_smt_enabled; smt_enabled=$?
|
||||
if [ "$smt_enabled" = 0 ]; then
|
||||
pstatus yellow YES
|
||||
else
|
||||
pstatus green NO
|
||||
fi
|
||||
# Zen 3/4 microcode brings SBPB mitigation
|
||||
elif [ "$cpu_family" = $(( 0x19 )) ]; then
|
||||
_info_nol "* CPU supports SBPB: "
|
||||
if [ "$cpuid_sbpb" = 1 ]; then
|
||||
pstatus green YES
|
||||
elif [ "$cpuid_sbpb" = 3 ]; then
|
||||
pstatus yellow UNKNOWN "cannot write MSR, rerun with --allow-msr-write"
|
||||
else
|
||||
pstatus yellow NO
|
||||
fi
|
||||
fi
|
||||
|
||||
elif [ "$sys_interface_available" = 0 ]; then
|
||||
# we have no sysfs but were asked to use it only!
|
||||
msg="/sys vulnerability interface use forced, but it's not available!"
|
||||
status=UNK
|
||||
fi
|
||||
|
||||
if ! is_cpu_affected "$cve" ; then
|
||||
# override status & msg in case CPU is not vulnerable after all
|
||||
pvulnstatus "$cve" OK "your CPU vendor reported your CPU model as not affected"
|
||||
elif [ -z "$msg" ]; then
|
||||
# if msg is empty, sysfs check didn't fill it, so we rely on our own logic
|
||||
# Zen/Zen2
|
||||
if [ "$cpu_family" = $(( 0x17 )) ]; then
|
||||
if [ "$smt_enabled" = 0 ]; then
|
||||
pvulnstatus "$cve" VULN "SMT is enabled on your Zen/Zen2 CPU, which makes mitigation ineffective"
|
||||
explain "For Zen/Zen2 CPUs, proper mitigation needs an up to date microcode, and SMT needs to be disabled (this can be done by adding \`nosmt\` to your kernel command line)"
|
||||
elif [ -z "$kernel_sro" ]; then
|
||||
pvulnstatus "$cve" VULN "Your kernel is too old and doesn't have the SRSO mitigation logic"
|
||||
elif [ -n "$cpuid_ibpb" ]; then
|
||||
pvulnstatus "$cve" OK "SMT is disabled and both your kernel and microcode support mitigation"
|
||||
else
|
||||
pvulnstatus "$cve" VULN "Your microcode is too old"
|
||||
fi
|
||||
# Zen3/Zen4
|
||||
elif [ "$cpu_family" = $(( 0x19 )) ]; then
|
||||
if [ -z "$kernel_sro" ]; then
|
||||
pvulnstatus "$cve" VULN "Your kernel is too old and doesn't have the SRSO mitigation logic"
|
||||
elif [ -z "$kernel_srso" ] && [ -z "$kernel_ibpb_entry" ]; then
|
||||
pvulnstatus "$cve" VULN "Your kernel doesn't have either SRSO or IBPB_ENTRY compiled-in"
|
||||
elif [ "$cpuid_sbpb" = 3 ]; then
|
||||
pvulnstatus "$cve" UNK "Couldn't verify if your microcode supports IBPB (rerun with --allow-msr-write)"
|
||||
elif [ "$cpuid_sbpb" = 2 ]; then
|
||||
pvulnstatus "$cve" VULN "Your microcode doesn't support SBPB"
|
||||
else
|
||||
pvulnstatus "$cve" OK "Your kernel and microcode both support mitigation"
|
||||
fi
|
||||
else
|
||||
# not supposed to happen, as normally this CPU should not be affected and not run this code
|
||||
pvulnstatus "$cve" OK "your CPU vendor reported your CPU model as not affected"
|
||||
fi
|
||||
else
|
||||
pvulnstatus $cve "$status" "$msg"
|
||||
fi
|
||||
}
|
||||
|
||||
#######################
|
||||
# END OF VULNS SECTIONS
|
||||
|
||||
|
||||
Loading…
Reference in New Issue
Block a user