Re: Security fix for remapping of page 0 (was [PATCH] Change ZERO_SIZE_PTR to point at unmapped space)

Christoph Lameter
2009-06-03T15:23:55Z

On Wed, 3 Jun 2009, Linus Torvalds wrote:

> The point being that we do need to support mmap at zero. Not necessarily
> universally, but it can't be some fixed "we don't allow that".

Hmmm... Depend on some capability? CAP_SYS_PTRACE may be something
remotely related?