mirror of
https://github.com/speed47/spectre-meltdown-checker
synced 2024-11-07 06:33:38 +01:00
feat: implement detection of latest known versions of intel microcodes
This commit is contained in:
Stéphane Lesimple
parent
e942616189
commit
fc1dffd09a
@ -1045,15 +1045,14 @@ parse_cpu_details()
|
||||
cpu_family=$( grep '^cpu family' "$procfs/cpuinfo" | awk '{print $4}' | grep -E '^[0-9]+$' | head -1)
|
||||
cpu_model=$( grep '^model' "$procfs/cpuinfo" | awk '{print $3}' | grep -E '^[0-9]+$' | head -1)
|
||||
cpu_stepping=$(grep '^stepping' "$procfs/cpuinfo" | awk '{print $3}' | grep -E '^[0-9]+$' | head -1)
|
||||
cpu_ucode=$( grep '^microcode' "$procfs/cpuinfo" | awk '{print $3}' | head -1)
|
||||
cpu_ucode=$( grep '^microcode' "$procfs/cpuinfo" | awk '{print $3}' | head -1)
|
||||
else
|
||||
cpu_friendly_name=$(sysctl -n hw.model)
|
||||
fi
|
||||
|
||||
# get raw cpuid, it's always useful (referenced in the Intel doc for firmware updates for example)
|
||||
if read_cpuid 0x1 $EAX 0 0xFFFFFFFF; then
|
||||
cpuid="$read_cpuid_value"
|
||||
#cpuid_hex=$(printf "%X" "$cpuid")
|
||||
cpu_cpuid="$read_cpuid_value"
|
||||
fi
|
||||
|
||||
# under BSD, linprocfs often doesn't export ucode information, so fetch it ourselves the good old way
|
||||
@ -1073,8 +1072,8 @@ parse_cpu_details()
|
||||
fi
|
||||
fi
|
||||
|
||||
echo "$cpu_ucode" | grep -q ^0x && cpu_ucode_decimal=$(( cpu_ucode ))
|
||||
ucode_found=$(printf "model 0x%x family 0x%x stepping 0x%x ucode 0x%x cpuid 0x%x" "$cpu_model" "$cpu_family" "$cpu_stepping" "$cpu_ucode" "$cpuid")
|
||||
echo "$cpu_ucode" | grep -q ^0x && cpu_ucode=$(( cpu_ucode ))
|
||||
ucode_found=$(printf "model 0x%x family 0x%x stepping 0x%x ucode 0x%x cpuid 0x%x" "$cpu_model" "$cpu_family" "$cpu_stepping" "$cpu_ucode" "$cpu_cpuid")
|
||||
|
||||
# also define those that we will need in other funcs
|
||||
# taken from ttps://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/tree/arch/x86/include/asm/intel-family.h
|
||||
@ -1212,7 +1211,7 @@ is_ucode_blacklisted()
|
||||
ucode=$(echo $tuple | cut -d, -f3)
|
||||
echo "$ucode" | grep -q ^0x && ucode_decimal=$(( ucode ))
|
||||
if [ "$cpu_model" = "$model" ] && [ "$cpu_stepping" = "$stepping" ]; then
|
||||
if [ "$cpu_ucode_decimal" = "$ucode_decimal" ] || [ "$cpu_ucode" = "$ucode" ]; then
|
||||
if [ "$cpu_ucode" = "$ucode_decimal" ] || [ "$cpu_ucode" = "$ucode" ]; then
|
||||
_debug "is_ucode_blacklisted: we have a match! ($cpu_model/$cpu_stepping/$cpu_ucode)"
|
||||
return 0
|
||||
fi
|
||||
@ -1268,6 +1267,75 @@ is_zen_cpu()
|
||||
return 1
|
||||
}
|
||||
|
||||
is_latest_known_ucode()
|
||||
{
|
||||
# 0: yes, 1: no, 2: unknown
|
||||
parse_cpu_details
|
||||
ucode_latest="latest microcode version of your CPU is not known to this script"
|
||||
is_intel || return 2
|
||||
# https://www.intel.com/content/dam/www/public/us/en/documents/sa00115-microcode-update-guidance.pdf
|
||||
# ps2txt sa00115-microcode-update-guidance.ps | grep -Eo '[0-9A-F]+ [0-9A-F]+ [^ ]+ Production 0x[A-F0-9]+ 0x[A-F0-9]+' | awk '{print "0x"$1","$6" \\"}' | sort -u
|
||||
# cpuid,ucode
|
||||
for tuple in \
|
||||
0x106A5,0x1D \
|
||||
0x106E5,0x0A \
|
||||
0x20652,0x11A \
|
||||
0x20652,0x11C \
|
||||
0x20655,0x7 \
|
||||
0x20655,0x7C \
|
||||
0x206A7,0x2E \
|
||||
0x206C2,0x1F \
|
||||
0x206D6,0x61D \
|
||||
0x206D7,0x714 \
|
||||
0x206E6,0x0D \
|
||||
0x206F2,0x3B \
|
||||
0x306A9,0x20 \
|
||||
0x306C3,0x25 \
|
||||
0x306D4,0x2BB \
|
||||
0x306E4,0x42D \
|
||||
0x306E7,0x714 \
|
||||
0x306F2,0x3D \
|
||||
0x306F4,0x12 \
|
||||
0x40651,0x24 \
|
||||
0x40661,0x1A \
|
||||
0x40671,0x1EB \
|
||||
0x406E3,0xC6 \
|
||||
0x406F1,0xB00002E \
|
||||
0x406F1,0xB00002EB \
|
||||
0x50654,0x200004D \
|
||||
0x50662,0x17B \
|
||||
0x50663,0x7000013B \
|
||||
0x50664,0xF000012B \
|
||||
0x50665,0xE00000AB \
|
||||
0x506C2,0x14C \
|
||||
0x506E3,0xC6 \
|
||||
0x506F1,0x24 \
|
||||
0x706A1,0x28 \
|
||||
0x806E9,0x8E \
|
||||
0x806EA,0x96 \
|
||||
0x806EA,0x96C \
|
||||
0x906E9,0x8E \
|
||||
0x906EA,0x96 \
|
||||
0x906EA,0x96C \
|
||||
0x906EA,0x96D \
|
||||
0x906EB,0x8EC
|
||||
do
|
||||
cpuid_decimal=$(( $(echo "$tuple" | cut -d, -f1) ))
|
||||
ucode_decimal=$(( $(echo "$tuple" | cut -d, -f2) ))
|
||||
ucode_latest=$(printf "you have version 0x%x and latest known version is 0x%x" "$cpu_ucode" "$ucode_decimal")
|
||||
if [ "$cpuid_decimal" = "$cpu_cpuid" ]; then
|
||||
_debug "is_latest_known_ucode: with cpuid $cpu_cpuid has ucode $cpu_ucode, last known is $cpuid_decimal"
|
||||
if [ "$cpu_ucode" -ge "$ucode_decimal" ]; then
|
||||
return 0
|
||||
else
|
||||
return 1
|
||||
fi
|
||||
fi
|
||||
done
|
||||
_debug "is_latest_known_ucode: this cpuid is not referenced ($cpu_cpuid)"
|
||||
return 2
|
||||
}
|
||||
|
||||
# ENTRYPOINT
|
||||
|
||||
# we can't do anything useful under WSL
|
||||
@ -2011,6 +2079,16 @@ check_cpu()
|
||||
else
|
||||
pstatus blue NO "$ucode_found"
|
||||
fi
|
||||
|
||||
_info_nol " * CPU microcode is the latest known available version: "
|
||||
is_latest_known_ucode; ret=$?
|
||||
if [ $ret -eq 0 ]; then
|
||||
pstatus green YES "$ucode_latest"
|
||||
elif [ $ret -eq 1 ]; then
|
||||
pstatus red NO "$ucode_latest"
|
||||
else
|
||||
pstatus blue UNKNOWN "$ucode_latest"
|
||||
fi
|
||||
}
|
||||
|
||||
check_cpu_vulnerabilities()
|
||||
|
||||
Loading…
Reference in New Issue
Block a user