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SubjectRE: [PATCH 0/2] efivars: reading variables can generate SMIs
Date
> If the default is 600 then it makes sense to allow a privileged service to
> selectively make certain variables world readable at runtime.

As soon as you make one variable world readable you are vulnerable to
a local user launching a DoS attack by reading that variable over and over
generating a flood of SMIs.

-Tony
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