Potential user/kernel pointer bugs identified in FreeBSD 5.3

Kris Kennaway kris at obsecurity.org
Fri Jan 7 15:08:20 PST 2005


On Fri, Jan 07, 2005 at 02:49:16PM -0800, Sean Whalen wrote:
> Hello,
> 
> We recently analyzed the FreeBSD 5.3 kernel source for user/kernel 
> pointer bugs using the Cqual tool (http://cqual.sourcefornet.net).
> Previous work has done the same with the Linux kernel.
> 
> The paper is available here: http://www.node99.org/projects/bsduk/
> On page 10 is an example trace of one such potential bug.  If there is 
> interest, we have traces for the others as well.
> 
> Our analysis was limited by RAM, and could be potentially improved by 
> using a machine with around 10 gigs of RAM for inter-file analysis of 
> the entire kernel.
> 
> Hopefully this is the right list for such a discussion.  Best,

freebsd-hackers would be better.

Kris
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