lkml.org 
[lkml]   [2020]   [Mar]   [15]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
 
Messages in this thread
/
Date
From
SubjectRe: [PATCH] slub: Relocate freelist pointer to middle of object
On Wed, 11 Mar 2020, Kees Cook wrote:

> > Sounds good. You could even randomize the position to avoid attacks on via
> > the freelist pointer.
>
> That's a good point. "offset" is just calculated once, and for many
> slabs, the available space is quite large. I wonder what the best

Correct.

> practice might be for how far from the edge to stay. Hmmm. Maybe simply
> carve it into thirds, and randomize the offset within the middle third?

Take off the first and last word and randomize within the space that is
left?

\
 
 \ /
  Last update: 2020-03-15 15:12    [W:0.057 / U:0.312 seconds]
©2003-2020 Jasper Spaans|hosted at Digital Ocean and TransIP|Read the blog|Advertise on this site