From: Mathias Krause <minipli@googlemail.com>
Date: Wed, 19 Sep 2012 11:33:39 +0000 (+0000)
Subject: xfrm_user: fix info leak in copy_to_user_state()
X-Git-Tag: v3.2.31~30
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=e470a5bc5c80cad5d8877701784351c2d8cdb6bc;p=pandora-kernel.git

xfrm_user: fix info leak in copy_to_user_state()

[ Upstream commit f778a636713a435d3a922c60b1622a91136560c1 ]

The memory reserved to dump the xfrm state includes the padding bytes of
struct xfrm_usersa_info added by the compiler for alignment (7 for
amd64, 3 for i386). Add an explicit memset(0) before filling the buffer
to avoid the info leak.

Signed-off-by: Mathias Krause <minipli@googlemail.com>
Acked-by: Steffen Klassert <steffen.klassert@secunet.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Ben Hutchings <ben@decadent.org.uk>
---

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