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From: Yann Droneaud <ydroneaud-RlY5vtjFyJ3QT0dZR+AlfA@public.gmane.org>
To: Roland Dreier <roland-DgEjT+Ai2ygdnm+yROfE0A@public.gmane.org>
Cc: linux-rdma-u79uwXL29TY76Z2rM5mHXA@public.gmane.org,
	Shachar Raindel <raindel-VPRAkNaXOzVWk0Htik3J/w@public.gmane.org>,
	Jack Morgenstein <jackm-VPRAkNaXOzVWk0Htik3J/w@public.gmane.org>,
	Or Gerlitz <ogerlitz-VPRAkNaXOzVWk0Htik3J/w@public.gmane.org>,
	stable-u79uwXL29TY76Z2rM5mHXA@public.gmane.org,
	Yann Droneaud <ydroneaud-RlY5vtjFyJ3QT0dZR+AlfA@public.gmane.org>
Subject: [PATCH RESEND 0/2] Fixes on top of CVE-2014-8159 kernel: infiniband: uverbs: unprotected physical memory access
Date: Wed,  8 Apr 2015 22:02:08 +0200	[thread overview]
Message-ID: <cover.1428523125.git.ydroneaud@opteya.com> (raw)

[Re-sent patch set with correct Cc: <stable-u79uwXL29TY76Z2rM5mHXA@public.gmane.org>]

Hi,

Please find one patch to prevent a possible issue partially
addressed by commit 8494057ab5e4 ("IB/uverbs: Prevent integer
overflow in ib_umem_get address arithmetic") (see discussions
in [1]) and another one to add back the possibility of registering
memory mapped at 0 (which is probably not something to be allowed,
but it's not up to ib_umem_get() to prevent it).

[1] "Re: CVE-2014-8159 kernel: infiniband: uverbs: unprotected physical
 memory access"

 http://mid.gmane.org/1428497043.22575.176.camel-RlY5vtjFyJ3QT0dZR+AlfA@public.gmane.org
 http://marc.info/?i=1428497043.22575.176.camel-RlY5vtjFyJ3QT0dZR+AlfA@public.gmane.org

Regards.

Yann Droneaud (2):
  IB/core: disallow registering 0-sized memory region
  IB/core: don't disallow registering region starting at 0x0

 drivers/infiniband/core/umem.c | 7 +++++--
 1 file changed, 5 insertions(+), 2 deletions(-)

-- 
2.1.0

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             reply	other threads:[~2015-04-08 20:02 UTC|newest]

Thread overview: 3+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2015-04-08 20:02 Yann Droneaud [this message]
2015-04-08 20:02 ` [PATCH RESEND 1/2] IB/core: disallow registering 0-sized memory region Yann Droneaud
     [not found] ` <cover.1428523125.git.ydroneaud-RlY5vtjFyJ3QT0dZR+AlfA@public.gmane.org>
2015-04-08 20:02   ` [PATCH RESEND 2/2] IB/core: don't disallow registering region starting at 0x0 Yann Droneaud

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