Follow @Openwall on Twitter for new release announcements and other news
[<prev] [next>] [thread-next>] [day] [month] [year] [list]
Date: Thu, 4 May 2017 12:02:47 +0200
From: Daniel Gruss <>
To: kernel list <>,
CC: "" <>,
        "" <>,
        Michael Schwarz
        Richard Fellner
        <>, "Ingo
 Molnar" <>,
Subject: [RFC, PATCH] x86_64: KAISER - do not map kernel in user mode

After several recent works [1,2,3] KASLR on x86_64 was basically 
considered dead by many researchers. We have been working on an 
efficient but effective fix for this problem and found that not mapping 
the kernel space when running in user mode is the solution to this 
problem [4] (the corresponding paper [5] will be presented at ESSoS17).

With this RFC patch we allow anybody to configure their kernel with the 
flag CONFIG_KAISER to add our defense mechanism.

If there are any questions we would love to answer them.
We also appreciate any comments!

Daniel (+ the KAISER team from Graz University of Technology)


View attachment "0001-KAISER-Kernel-Address-Isolation.patch" of type "text/x-patch" (22363 bytes)

Powered by blists - more mailing lists

Confused about mailing lists and their use? Read about mailing lists on Wikipedia and check out these guidelines on proper formatting of your messages.