tldr/pages/linux/spectre-meltdown-checker.md

spectre-meltdown-checker

Spectre and Meltdown mitigation detection tool. More information: https://manned.org/spectre-meltdown-checker.1.

• Check the currently running kernel for Spectre or Meltdown:

sudo spectre-meltdown-checker

• Check the currently running kernel and show an explanation of the actions to take in order to mitigate a vulnerability:

sudo spectre-meltdown-checker --explain

• Check for specific variants (defaults to all):

sudo spectre-meltdown-checker --variant {{1|2|3|3a|4|l1tf|msbds|mfbds|mlpds|mdsum|taa|mcespc|srbds}}

• Display output using a specific output format:

sudo spectre-meltdown-checker --batch {{text|json|nrpe|prometheus|short}}

• Don't use the /sys interface even if present:

sudo spectre-meltdown-checker --no-sysfs

• Check a non-running kernel:

sudo spectre-meltdown-checker --kernel {{path/to/kernel_file}}