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ASLR is disabled in Oracle Linux 7 system - kernel.randomize_va_space = 0

edited Aug 9, 2022 2:59PM in Linux

Applies to:

Oracle Cloud Infrastructure - Version N/A and later

Linux OS - Version Oracle Linux 7.0 and later

Oracle Compute Cloud Service - Version N/A and later

Information in this document applies to any platform.


Goal

In a specific Oracle Linux 7 OCI instance, the parameter kernel.randomize_va_space is set to 0, disabling ASLR.

Is this the standard or recommended setting?

 

Solution

In standard Oracle Linux 7 OCI instances, ASLR is enabled by default and the corresponding kernel parameter is set to kernel.randomize_va_space = 2

From the point of view of the Linux OS alone, ASLR should be enabled as it provides additional security by randomizing the memory addresses of memory segments used by processes.

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