CONFIG_GCC_PLUGIN_STRUCTLEAK:

General informations

The Linux kernel configuration item CONFIG_GCC_PLUGIN_STRUCTLEAK has multiple definitions:

found in security/Kconfig.hardening

The configuration item CONFIG_GCC_PLUGIN_STRUCTLEAK:

• prompt:
• type: bool
• depends on: (none)
• defined in security/Kconfig.hardening
• found in Linux kernels: 5.2–5.19, 6.0–6.12

Help text

While the kernel is built with warnings enabled for any missed stack variable initializations, this warning is silenced for anything passed by reference to another function, under the occasionally misguided assumption that the function will do the initialization. As this regularly leads to exploitable flaws, this plugin is available to identify and zero-initialize such variables, depending on the chosen level of coverage.

This plugin was originally ported from grsecurity/PaX. More information at: * https://grsecurity.net/ * https://pax.grsecurity.net/

Zero initialize stack variables found in scripts/gcc-plugins/Kconfig

The configuration item CONFIG_GCC_PLUGIN_STRUCTLEAK:

• prompt: Zero initialize stack variables
• type: bool
• depends on: (none)
• defined in scripts/gcc-plugins/Kconfig
• found in Linux kernels: 5.1

Help text

While the kernel is built with warnings enabled for any missed stack variable initializations, this warning is silenced for anything passed by reference to another function, under the occasionally misguided assumption that the function will do the initialization. As this regularly leads to exploitable flaws, this plugin is available to identify and zero-initialize such variables, depending on the chosen level of coverage.

This plugin was originally ported from grsecurity/PaX. More information at: * https://grsecurity.net/ * https://pax.grsecurity.net/

Force initialization of variables containing userspace addresses found in scripts/gcc-plugins/Kconfig

The configuration item CONFIG_GCC_PLUGIN_STRUCTLEAK:

• prompt: Force initialization of variables containing userspace addresses
• type: bool
• depends on: ! CONFIG_KASAN_EXTRA
• defined in scripts/gcc-plugins/Kconfig
• found in Linux kernels: 4.19–4.20, 5.0

Help text

This plugin zero-initializes any structures containing a __user attribute. This can prevent some classes of information exposures.

This plugin was ported from grsecurity/PaX. More information at: * https://grsecurity.net/ * https://pax.grsecurity.net/

Force initialization of variables containing userspace addresses found in arch/Kconfig

The configuration item CONFIG_GCC_PLUGIN_STRUCTLEAK:

• prompt: Force initialization of variables containing userspace addresses
• type: bool
• depends on: ( CONFIG_GCC_PLUGINS ) && (! CONFIG_KASAN_EXTRA )
• defined in arch/Kconfig
• found in Linux kernels: 4.11–4.18

Help text

This plugin zero-initializes any structures containing a __user attribute. This can prevent some classes of information exposures.

This plugin was ported from grsecurity/PaX. More information at: * https://grsecurity.net/ * https://pax.grsecurity.net/

Hardware

LKDDb

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• (none)

Sources

This page is automaticly generated with free (libre, open) software lkddb(see lkddb-sources).

The data is retrived from:

• Linux kernel
• Linux Kernel Driver DataBase (LKDDb)

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