Messages in this thread |  | | Date | Sun, 22 Nov 2020 22:00:31 +0100 | From | Pavel Machek <> | Subject | Re: [PATCH v6 0/8] IMA: support for measuring kernel integrity critical data |
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Hi!
> >How is it supposed to be useful? > > > >I'm pretty sure there are critical data that are not measured by > >proposed module... and that are written under normal circumstances. > > > The goal of this series is to introduce the IMA hook > measure_critical_data() and the necessary policies to use it; and > illustrate that use with one example (SELinux). It is not scalable to > identify and update all the critical data sources to use the proposed > module at once. > > A piecemeal approach to add more critical data measurement in subsequent > patches would be easy to implement and review.
Basically every other data structure in kernel is "critical" by your definition, and you can't really measure them all; some of them change rather often. Going piecemeal does not really help here.
Example of critical data structure: page table entries for process I own.
Best regards, Pavel -- http://www.livejournal.com/~pavelmachek [unhandled content-type:application/pgp-signature] |  |