Follow @Openwall on Twitter for new release announcements and other news
[<prev] [next>] [<thread-prev] [thread-next>] [day] [month] [year] [list]
Date: Wed, 4 Oct 2017 20:15:42 -0700
From: Kees Cook <>
To: Linus Torvalds <>
Cc: "Tobin C. Harding" <>, "Roberts, William C" <>, Tejun Heo <>, 
	Jordan Glover <>, Greg KH <>, 
	Petr Mladek <>, Joe Perches <>, Ian Campbell <>, 
	Sergey Senozhatsky <>, 
	"" <>, 
	Catalin Marinas <>, Will Deacon <>, 
	Steven Rostedt <>, Chris Fries <>, 
	Dave Weinstein <>
Subject: Re: [RFC V2 0/6] add more kernel pointer filter options

On Wed, Oct 4, 2017 at 8:10 PM, Linus Torvalds
<> wrote:
> But plain %p has definitely been a problem, and I don't think %pa is
> great either. So aiming to get rid of them entirely is probably a good
> idea.

As you've hinted, doing this will make %x use go up, of course, so I
remain convinced that we need some kind of at-runtime evaluation of
the arguments coming into v*sprintf(). If we removed the raw %p format
string, we'd want to stop %x from being used on memory addresses too.


Kees Cook
Pixel Security

Powered by blists - more mailing lists

Confused about mailing lists and their use? Read about mailing lists on Wikipedia and check out these guidelines on proper formatting of your messages.