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(parent: 4c87308) | patch
xfrm_user: fix info leak in copy_to_user_state()
authorMathias Krause <minipli@googlemail.com>
Wed, 19 Sep 2012 11:33:39 +0000 (11:33 +0000)
committerDavid S. Miller <davem@davemloft.net>
Thu, 20 Sep 2012 22:08:39 +0000 (18:08 -0400)
commitf778a636713a435d3a922c60b1622a91136560c1
treeb50f9ec1a33555491dc9874a93a0404406c4f6cctree | snapshot
parent4c87308bdea31a7b4828a51f6156e6f721a1fcc9commit | diff
xfrm_user: fix info leak in copy_to_user_state()

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>
net/xfrm/xfrm_user.c diff | blob | history
Domain: System / Uncategorized;