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Old 08-12-2019, 01:27 AM   #1
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Please explain the authentication support for ARM pointer in New Linux Kernel 5.0

Recently I've studied the blog post related to Linux Kernel 5 new enhanced features

I don't understand the new feature called Authentication support for ARM pointer

Here is link for the blog I've studied
Linux Kernel 5 features
Old 08-12-2019, 03:02 AM   #2
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"I don't understand the new feature" is not a good problem description. I don't think you can get a personal tutor for free at What you can do is search the internet for ARM64 pointer authentication to get a description of this technology, then ask a more specific question.

Having said that, I scanned and believe that this feature attempts to prevent exploits that rely on changing pointer values. Pointers in the kernel are cryptographically signed so that they can't be tampered with. This feature is specifically targeted to smartphones with ARM processors.


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