[<prev] [next>] [<thread-prev] [thread-next>] [day] [month] [year] [list]
Date: Tue, 9 Apr 2013 11:47:10 +0530 (IST)
From: P J P <ppandit@...hat.com>
To: Dan Carpenter <dan.carpenter@...cle.com>
cc: oss security list <oss-security@...ts.openwall.com>
Subject: Re: CVE Request: kernel information leak in
fs/compat_ioctl.c VIDEO_SET_SPU_PALETTE
+-- On Mon, 8 Apr 2013, Dan Carpenter wrote --+
| I'm confused why you are using the word "always" and "Unless
| `access_ok()' in `__get_user' returns 0". I don't understand what
| you are saying.
Well, always because __access_ok as defined in include/asm-generic/uaccess.h
always returns true.
===
static inline int __access_ok(unsigned long addr, unsigned long size)
{
return 1;
}
===
| Anyway, the bottom line is that the x86 version of get_user()
| doesn't have an info leak and the asm-generic version does.
I see, that's when asm-generic _access_ok is overridden by another
definition?
Thank you.
--
Prasad J Pandit / Red Hat Security Response Team
DB7A 84C5 D3F9 7CD1 B5EB C939 D048 7860 3655 602B
Powered by blists - more mailing lists
Please check out the
Open Source Software Security Wiki, which is counterpart to this
mailing list.
Confused about mailing lists and their use?
Read about mailing lists on Wikipedia
and check out these
guidelines on proper formatting of your messages.
