kernel 2.4.22 patch

[Sebastian Schmitt <basti@fkp.tu-darmstadt.de>]

Hi,

is there a kernel patch/update for the 
'do_mremap VMA limit local privilege escalation vulnerability'  described in
http://isec.pl/vulnerabilities/isec-0014-mremap-unmap.txt ?

i have the kernel  2.4.22-2-686-smp running and do security updates on a daily 
basis.  But im still vulnerable, as checked with the programm in the appendix 
of the above page.
So, is there a debian patch or how can i fix this situation. and if there is a 
patch, why did it not get installed with the regular security updates?

thanks, basti