Re: Signing kexec blobs?

Date: 2013-12-05 09:17 am (UTC)
From: (Anonymous)
As I understand it, it's not self modifying.

It's a userspace program that loads it in Purgatory and that same a userspace program that modifies that kernel to change the kernel arguments.

So it's not self modifying, but it is modified.

How much work would it be for the kernel to modify the kernel arguments in it's own signed successor ?

Can the Linux kernel be made smart enough to at least understand it's own kernel arguments ?

Or maybe only allow the same kernel arguments for it's successor to be the same as it's own arguments ?
If you don't have an account you can create one now.
HTML doesn't work in the subject.
More info about formatting

If you are unable to use this captcha for any reason, please contact us by email at support@dreamwidth.org

 
Notice: This account is set to log the IP addresses of everyone who comments.
Links will be displayed as unclickable URLs to help prevent spam.

Profile

Matthew Garrett

About Matthew

Power management, mobile and firmware developer on Linux. Security developer at nvidia. Ex-biologist. Content here should not be interpreted as the opinion of my employer. Also on Mastodon and Bluesky.

Expand Cut Tags

No cut tags