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CONFIG_INIT_STACK_ALL_PATTERN: 0xAA-init everything on the stack (strongest)

General informations

The Linux kernel configuration item CONFIG_INIT_STACK_ALL_PATTERN:

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Initializes everything on the stack with a 0xAA pattern. This is intended to eliminate all classes of uninitialized stack variable exploits and information exposures, even variables that were warned to have been left uninitialized.

Pattern initialization is known to provoke many existing bugs related to uninitialized locals, e.g. pointers receive non-NULL values, buffer sizes and indices are very big.

Hardware

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