1.6.2 Ensure address space layout randomization (ASLR) is enabled - sysctl.conf sysctl.d

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Address space layout randomization (ASLR) is an exploit mitigation technique which randomly arranges the address space of key data areas of a process.


Randomly placing virtual memory regions will make it difficult to write memory page exploits as the memory placement will be consistently shifting.


Set the following parameter in /etc/sysctl.conf or a /etc/sysctl.d/* file:

kernel.randomize_va_space = 2

Run the following command to set the active kernel parameter:

# sysctl -w kernel.randomize_va_space=2

See Also