User: Password:
Subscribe / Log in / New account

Re: A system for rebootless kernel security updates

From:  Tomasz Chmielewski <>
To:  LKML <>, jbarnold-AT-MIT.EDU,, Andi Kleen <>,
Subject:  Re: A system for rebootless kernel security updates
Date:  Thu, 24 Apr 2008 16:26:44 +0200
Message-ID:  <>
Archive-link:  Article

Jeff Arnold wrote:

> I've put together an automatic system for applying kernel security patches 
> to the Linux kernel without rebooting it, and I wanted to share this 
> system with the community in case others find it useful or interesting.

Hmm, the idea seem to be patented by Microsoft, i.e. this patent from 
December 2002:

(and other patents by Microsoft if you search for "hotpatching").

And those patent descriptions, by the way, remind the way kexec works 
("A software module is hotpatched by loading a patch into memory and 
modifying an instruction in the original module to jump to the patch"), 
which was released much earlier... In essence, they patented kexec ;)

Tomasz Chmielewski

(Log in to post comments)

Copyright © 2008, Eklektix, Inc.
Comments and public postings are copyrighted by their creators.
Linux is a registered trademark of Linus Torvalds