[lkml]   [2021]   [Feb]   [21]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
Messages in this thread
SubjectRe: [PATCH 5/9] security: keys: trusted: Allow storage of PCR values in creation data
On Sat, Feb 20, 2021 at 05:09:07 +0200, Jarkko Sakkinen wrote:
> Something popped into mind: could we make PCR 23 reservation dynamic
> instead of a config option.
> E.g. if the user space uses it, then it's dirty and hibernate will
> fail. I really dislike the static compilation time firewall on it.

I don't know the threat model here, but couldn't hibernation then be
blocked by userspace using PCR 23 in some way (thus becoming a Denial of
Service)? Are elevated permissions required to use PCR values?


 \ /
  Last update: 2021-02-21 20:49    [W:0.058 / U:4.264 seconds]
©2003-2020 Jasper Spaans|hosted at Digital Ocean and TransIP|Read the blog|Advertise on this site