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fix: CVE-2020-0543 (SRBDS): microcode mitigation misdetected (#492)

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built from commit 41251d8e51ec7fcff6025bf772ae8b6778d0c641
 dated 2026-04-06 00:58:49 +0200
 by Stéphane Lesimple (speed47_github@speed47.net)
This commit is contained in:
github-actions[bot]
2026-04-05 23:00:02 +00:00
parent e0f9aeab81
commit 5698711b3d
1 changed files with 4 additions and 4 deletions
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8
spectre-meltdown-checker.sh
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@@ -13,7 +13,7 @@
# #
# Stephane Lesimple # Stephane Lesimple
# #
VERSION='26.28.0405949' VERSION='26.28.0405957'
# --- Common paths and basedirs --- # --- Common paths and basedirs ---
readonly VULN_SYSFS_BASE="/sys/devices/system/cpu/vulnerabilities" readonly VULN_SYSFS_BASE="/sys/devices/system/cpu/vulnerabilities"
@@ -4586,11 +4586,11 @@ check_cpu() {
read_msr $MSR_IA32_MCU_OPT_CTRL read_msr $MSR_IA32_MCU_OPT_CTRL
ret=$? ret=$?
if [ $ret = $READ_MSR_RET_OK ]; then if [ $ret = $READ_MSR_RET_OK ]; then
if [ "$ret_read_msr_value" = "0000000000000000" ]; then if [ "$((ret_read_msr_value_lo >> 0 & 1))" = 0 ]; then
#SRBDS mitigation control exists and is enabled via microcode #SRBDS mitigation control exists and is enabled via microcode (RNGDS_MITG_DIS bit is 0)
cap_srbds_on=1 cap_srbds_on=1
else else
#SRBDS mitigation control exists but is disabled via microcode #SRBDS mitigation control exists but is disabled via microcode (RNGDS_MITG_DIS bit is 1)
cap_srbds_on=0 cap_srbds_on=0
fi fi
else else