If the Linux kernel doesn't use VMM to page in/out its executable, then my attack won't work. Hey I learned something :). I thought the kernel did memmap its files through the MMU.
Windows does page kernel drivers, and has a system of file locks to protect on disk data (including insisting that the data is on the system volume, not a corruptible network share)
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.
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Re: Signing kexec blobs?
Date: 2013-12-04 01:05 am (UTC)If the Linux kernel doesn't use VMM to page in/out its executable, then my attack won't work. Hey I learned something :). I thought the kernel did memmap its files through the MMU.
Windows does page kernel drivers, and has a system of file locks to protect on disk data (including insisting that the data is on the system volume, not a corruptible network share)