Linux kernel 2.6.23 allows local users to create low pages in virtual userspace memory and bypass mmap_min_addr protection via a crafted executable file that calls the do_brk function.Referenceshttp://www.vupen.com/english/advisories/2007/4200http://osvdb.org/40907http://www.securityfocus.com/bid/26831http://secunia.com/advisories/28070http://kernel.org/pub/linux/kernel/v2.6/testing/ChangeLog-2.6.24-rc5