{"description": "Enable this to use virtually-mapped kernel stacks with guard pages.\nThis configuration is available from kernel 4.9.\n\nThe configuration that was used to build kernel is available at <tt>/boot/config-*</tt>.\n    To check the configuration value for <tt>CONFIG_VMAP_STACK</tt>, run the following command:\n    <tt>grep CONFIG_VMAP_STACK /boot/config-*</tt>\n    \n    For each kernel installed, a line with value \"y\" should be returned.\n    ", "rationale": "This causes kernel stack overflows to be caught immediately rather than causing difficult-to-diagnose corruption.", "severity": "medium", "references": {"anssi": ["R15"]}, "control_references": {"anssi": ["R15"]}, "components": [], "identifiers": {}, "ocil_clause": "the kernel was not built with the required value", "ocil": "To determine the config value the kernel was built with, run the following command:\n    <pre>$ grep CONFIG_VMAP_STACK /boot/config.*</pre>\n    \n    For each kernel installed, a line with value \"y\" should be returned.\n    ", "oval_external_content": null, "fixtext": "", "checktext": "", "vuldiscussion": "", "srg_requirement": "", "warnings": [{"general": "There is no remediation for this besides re-compiling the kernel with the appropriate value for the config."}], "conflicts": [], "requires": [], "policy_specific_content": {}, "platform": null, "platforms": [], "sce_metadata": {}, "inherited_platforms": ["system_with_kernel"], "cpe_platform_names": [], "inherited_cpe_platform_names": ["system_with_kernel"], "bash_conditional": null, "fixes": {}, "title": "User a virtually-mapped stack", "definition_location": "/aptdata/openscap/scap-security-guide/linux_os/guide/system/kernel_build_config/kernel_config_vmap_stack/rule.yml", "template": {"name": "kernel_build_config", "vars": {"config": "CONFIG_VMAP_STACK", "value": "y"}, "backends": {}}}