tech-security: Secretly monopolizing the CPU w/o superuser privileges?

Subject: Secretly monopolizing the CPU w/o superuser privileges?
To: None <rmind@NetBSD.org, yamt@NetBSD.org, dsieger@NetBSD.org>
From: Hubert Feyrer <hubert@feyrer.de>
List: tech-security
Date: 07/13/2007 14:13:51

I've stumbled across [1] which describes a way to use cpu ressources in a 
way that does sub-tick task-switching, so that other processes get 
accounted while the mallicious process still takes an arbitrary CPU whare. 
Apparently FreeBSD's 4BSD and ULE schedulers are vulnerable.

I wonder how NetBSD goes in that regard - can you tell?


   - Hubert

[1] http://www.cs.huji.ac.il/~dants/papers/Cheat07Security.pdf