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https://github.com/speed47/spectre-meltdown-checker
synced 2024-12-31 00:25:46 +01:00
chore: fix indentation
This commit is contained in:
Stéphane Lesimple
parent
62d3448a54
commit
d8f0ddd7a5
@ -1,5 +1,6 @@
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#! /bin/sh
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# SPDX-License-Identifier: GPL-3.0-only
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# vim: set ts=8 sw=8 sts=4 noet:
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#
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# Spectre & Meltdown checker
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#
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@ -719,7 +720,10 @@ is_cpu_srbds_free()
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# source: https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/tree/arch/x86/kernel/cpu/common.c
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#
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# A processor is affected by SRBDS if its Family_Model and stepping is in the
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# following list:
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# following list, with the exception of the listed processors
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# exporting MDS_NO while Intel TSX is available yet not enabled. The
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# latter class of processors are only affected when Intel TSX is enabled
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# by software using TSX_CTRL_MSR otherwise they are not affected.
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#
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# ============= ============ ========
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# common name Family_Model Stepping
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@ -741,16 +745,16 @@ is_cpu_srbds_free()
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# Kabylake 06_9EH <=0xD (MDS_NO) (INTEL_FAM6_KABYLAKE)
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# ============= ============ ========
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parse_cpu_details
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if is_intel; then
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if [ "$cpu_family" = 6 ]; then
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if [ "$cpu_model" = "$INTEL_FAM6_IVYBRIDGE" ] || \
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[ "$cpu_model" = "$INTEL_FAM6_HASWELL" ] || \
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[ "$cpu_model" = "$INTEL_FAM6_HASWELL_L" ] || \
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[ "$cpu_model" = "$INTEL_FAM6_HASWELL_G" ] || \
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[ "$cpu_model" = "$INTEL_FAM6_BROADWELL_G" ] || \
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[ "$cpu_model" = "$INTEL_FAM6_BROADWELL" ] || \
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[ "$cpu_model" = "$INTEL_FAM6_SKYLAKE_L" ] || \
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[ "$cpu_model" = "$INTEL_FAM6_SKYLAKE" ]; then
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if is_intel; then
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if [ "$cpu_family" = 6 ]; then
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if [ "$cpu_model" = "$INTEL_FAM6_IVYBRIDGE" ] || \
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[ "$cpu_model" = "$INTEL_FAM6_HASWELL" ] || \
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[ "$cpu_model" = "$INTEL_FAM6_HASWELL_L" ] || \
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[ "$cpu_model" = "$INTEL_FAM6_HASWELL_G" ] || \
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[ "$cpu_model" = "$INTEL_FAM6_BROADWELL_G" ] || \
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[ "$cpu_model" = "$INTEL_FAM6_BROADWELL" ] || \
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[ "$cpu_model" = "$INTEL_FAM6_SKYLAKE_L" ] || \
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[ "$cpu_model" = "$INTEL_FAM6_SKYLAKE" ]; then
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return 1
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elif [ "$cpu_model" = "$INTEL_FAM6_KABYLAKE_L" ] && [ "$cpu_stepping" -le 12 ] || \
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[ "$cpu_model" = "$INTEL_FAM6_KABYLAKE" ] && [ "$cpu_stepping" -le 13 ]; then
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@ -5363,97 +5367,97 @@ check_CVE_2020_0543()
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check_CVE_2020_0543_linux()
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{
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status=UNK
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sys_interface_available=0
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msg=''
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if sys_interface_check "/sys/devices/system/cpu/vulnerabilities/srbds"; then
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# this kernel has the /sys interface, trust it over everything
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sys_interface_available=1
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fi
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if [ "$opt_sysfs_only" != 1 ]; then
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_info_nol "* SRBDS mitigation control is supported by the kernel: "
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kernel_srbds=''
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if [ -n "$kernel_err" ]; then
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kernel_srbds_err="$kernel_err"
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elif grep -q 'Dependent on hypervisor' "$kernel"; then
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kernel_srbds="found SRBDS implementation evidence in kernel image. Your kernel is up to date for SRBDS mitigation"
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fi
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if [ -n "$kernel_srbds" ]; then
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pstatus green YES "$kernel_srbds"
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elif [ -n "$kernel_srbds_err" ]; then
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pstatus yellow UNKNOWN "$kernel_srbds_err"
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else
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pstatus yellow NO
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fi
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_info_nol "* SRBDS mitigation control is enabled and active: "
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if [ "$opt_live" = 1 ]; then
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if [ -n "$fullmsg" ]; then
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if echo "$fullmsg" | grep -qE '^Mitigation'; then
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pstatus green YES "$fullmsg"
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else
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pstatus yellow NO
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fi
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else
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pstatus yellow NO "SRBDS not found in sysfs hierarchy"
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fi
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else
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pstatus blue N/A "not testable in offline mode"
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fi
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elif [ "$sys_interface_available" = 0 ]; then
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# we have no sysfs but were asked to use it only!
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msg="/sys vulnerability interface use forced, but it's not available!"
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status=UNK
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fi
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if ! is_cpu_vulnerable "$cve" ; then
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# override status & msg in case CPU is not vulnerable after all
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pvulnstatus "$cve" OK "your CPU vendor reported your CPU model as not vulnerable"
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else
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if [ "$opt_sysfs_only" != 1 ]; then
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if [ "$cpuid_srbds" = 1 ]; then
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# SRBDS mitigation control exists
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if [ "$srbds_on" = 1 ]; then
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# SRBDS mitigation control is enabled
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if [ -z "$msg" ]; then
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# if msg is empty, sysfs check didn't fill it, rely on our own test
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if [ "$opt_live" = 1 ]; then
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# if we're in live mode and $msg is empty, sysfs file is not there so kernel is too old
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pvulnstatus "$cve" OK "Your microcode is up to date for SRBDS mitigation control. The kernel needs to be updated"
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fi
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else
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if [ -n "$kernel_srbds" ]; then
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pvulnstatus "$cve" OK "Your microcode and kernel are both up to date for SRBDS mitigation control. Mitigation is enabled"
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else
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pvulnstatus "$cve" OK "Your microcode is up to date for SRBDS mitigation control. The kernel needs to be updated"
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fi
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fi
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elif [ "$srbds_on" = 0 ]; then
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# SRBDS mitigation control is disabled
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if [ -z "$msg" ]; then
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if [ "$opt_live" = 1 ]; then
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# if we're in live mode and $msg is empty, sysfs file is not there so kernel is too old
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pvulnstatus "$cve" VULN "Your microcode is up to date for SRBDS mitigation control. The kernel needs to be updated. Mitigation is disabled"
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fi
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else
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if [ -n "$kernel_srbds" ]; then
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pvulnstatus "$cve" VULN "Your microcode and kernel are both up to date for SRBDS mitigation control. Mitigation is disabled"
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else
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pvulnstatus "$cve" VULN "Your microcode is up to date for SRBDS mitigation control. The kernel needs to be updated. Mitigation is disabled"
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fi
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fi
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else
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# rdmsr: CPU 0 cannot read MSR 0x00000123
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pvulnstatus "$cve" UNK "Not able to enumerate MSR for SRBDS mitigation control"
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fi
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else
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# [ $cpuid_srbds != 1 ]
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pvulnstatus "$cve" VULN "Your CPU microcode may need to be updated to mitigate the vulnerability"
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fi
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else
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# sysfs only: return the status/msg we got
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pvulnstatus "$cve" "$status" "$fullmsg"
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return
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fi
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fi
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status=UNK
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sys_interface_available=0
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msg=''
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if sys_interface_check "/sys/devices/system/cpu/vulnerabilities/srbds"; then
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# this kernel has the /sys interface, trust it over everything
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sys_interface_available=1
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fi
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if [ "$opt_sysfs_only" != 1 ]; then
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_info_nol "* SRBDS mitigation control is supported by the kernel: "
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kernel_srbds=''
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if [ -n "$kernel_err" ]; then
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kernel_srbds_err="$kernel_err"
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elif grep -q 'Dependent on hypervisor' "$kernel"; then
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kernel_srbds="found SRBDS implementation evidence in kernel image. Your kernel is up to date for SRBDS mitigation"
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fi
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if [ -n "$kernel_srbds" ]; then
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pstatus green YES "$kernel_srbds"
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elif [ -n "$kernel_srbds_err" ]; then
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pstatus yellow UNKNOWN "$kernel_srbds_err"
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else
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pstatus yellow NO
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fi
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_info_nol "* SRBDS mitigation control is enabled and active: "
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if [ "$opt_live" = 1 ]; then
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if [ -n "$fullmsg" ]; then
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if echo "$fullmsg" | grep -qE '^Mitigation'; then
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pstatus green YES "$fullmsg"
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else
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pstatus yellow NO
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fi
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else
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pstatus yellow NO "SRBDS not found in sysfs hierarchy"
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fi
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else
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pstatus blue N/A "not testable in offline mode"
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fi
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elif [ "$sys_interface_available" = 0 ]; then
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# we have no sysfs but were asked to use it only!
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msg="/sys vulnerability interface use forced, but it's not available!"
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status=UNK
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fi
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if ! is_cpu_vulnerable "$cve" ; then
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# override status & msg in case CPU is not vulnerable after all
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pvulnstatus "$cve" OK "your CPU vendor reported your CPU model as not vulnerable"
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else
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if [ "$opt_sysfs_only" != 1 ]; then
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if [ "$cpuid_srbds" = 1 ]; then
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# SRBDS mitigation control exists
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if [ "$srbds_on" = 1 ]; then
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# SRBDS mitigation control is enabled
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if [ -z "$msg" ]; then
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# if msg is empty, sysfs check didn't fill it, rely on our own test
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if [ "$opt_live" = 1 ]; then
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# if we're in live mode and $msg is empty, sysfs file is not there so kernel is too old
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pvulnstatus "$cve" OK "Your microcode is up to date for SRBDS mitigation control. The kernel needs to be updated"
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fi
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else
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if [ -n "$kernel_srbds" ]; then
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pvulnstatus "$cve" OK "Your microcode and kernel are both up to date for SRBDS mitigation control. Mitigation is enabled"
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else
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pvulnstatus "$cve" OK "Your microcode is up to date for SRBDS mitigation control. The kernel needs to be updated"
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fi
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fi
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elif [ "$srbds_on" = 0 ]; then
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# SRBDS mitigation control is disabled
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if [ -z "$msg" ]; then
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if [ "$opt_live" = 1 ]; then
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# if we're in live mode and $msg is empty, sysfs file is not there so kernel is too old
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pvulnstatus "$cve" VULN "Your microcode is up to date for SRBDS mitigation control. The kernel needs to be updated. Mitigation is disabled"
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fi
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else
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if [ -n "$kernel_srbds" ]; then
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pvulnstatus "$cve" VULN "Your microcode and kernel are both up to date for SRBDS mitigation control. Mitigation is disabled"
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else
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pvulnstatus "$cve" VULN "Your microcode is up to date for SRBDS mitigation control. The kernel needs to be updated. Mitigation is disabled"
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fi
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fi
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else
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# rdmsr: CPU 0 cannot read MSR 0x00000123
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pvulnstatus "$cve" UNK "Not able to enumerate MSR for SRBDS mitigation control"
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fi
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else
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# [ $cpuid_srbds != 1 ]
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pvulnstatus "$cve" VULN "Your CPU microcode may need to be updated to mitigate the vulnerability"
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fi
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else
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# sysfs only: return the status/msg we got
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pvulnstatus "$cve" "$status" "$fullmsg"
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return
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fi
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fi
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}
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#######################
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