Re: The story of the Linux kernel 3.x...

[Tavis Ormandy <taviso () cmpxchg8b com>]

Adam Zabrocki <pi3 () pi3 com pl> wrote:
> Btw. I wonder why no-one point this out before... Btw2. Go and write
> reliable exploit for kernel 3.x ;p

You must be using CONFIG_COMPAT_VDSO, it's rarely used unless you need
compatibility with an ancient libc that was released during the narrow
window where the vdso was mapped at a static location.

Any libc released since ~2006 would never need it, and will determine the
vdso location at runtime from auxv.

If any distribution ships a kernel with this option enabled, then you've
found a real issue that needs to be fixed. Did you configure it yourself, or
are you using a stock kernel?

Tavis.


-- 
-------------------------------------
taviso () cmpxchg8b com | pgp encrypted mail preferred
-------------------------------------------------------

_______________________________________________
Full-Disclosure - We believe in it.
Charter: http://lists.grok.org.uk/full-disclosure-charter.html
Hosted and sponsored by Secunia - http://secunia.com/