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The Linux kernel configuration item CONFIG_RANDOMIZE_MEMORY
:
( CONFIG_X86_64 ) && ( CONFIG_RANDOMIZE_BASE )
Randomizes the base virtual address of kernel memory sections (physical memory mapping, vmalloc & vmemmap). This security feature makes exploits relying on predictable memory locations less reliable.
The order of allocations remains unchanged. Entropy is generated in the same way as RANDOMIZE_BASE. Current implementation in the optimal configuration have in average 30,000 different possible virtual addresses for each memory section.
If unsure, say Y.
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