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Linux 4.12 To Enable KASLR By Default

Written by Michael Larabel in Linux Kernel on 1 May 2017 at 04:43 PM EDT. 20 Comments

The Linux 4.12 kernel is to enable KASLR support by default for x86-based systems to further improve the security.

For x86/x86_64 systems, Linux 4.12 will turn on by default the Kernel Address Space Layout Randomization (KASLR) feature. Many Linux distributions already enable KASLR in the name of the security while now it's becoming the default for x86/x86_64 kernel builds. KASLR is about randomizing the location of the kernel code in RAM at boot time. This feature has been around for a few years (since Linux 3.14) while its effectiveness has been argued.

This change is made with Ingo Molnar's x86/boot updates for Linux 4.12.

20 Comments

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Michael Larabel is the principal author of Phoronix.com and founded the site in 2004 with a focus on enriching the Linux hardware experience. Michael has written more than 20,000 articles covering the state of Linux hardware support, Linux performance, graphics drivers, and other topics. Michael is also the lead developer of the Phoronix Test Suite, Phoromatic, and OpenBenchmarking.org automated benchmarking software. He can be followed via Twitter, LinkedIn, or contacted via MichaelLarabel.com.