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

From: Christoph Lameter
Date: Wed Jun 03 2009 - 11:24:07 EST


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?

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