From: Ben Hutchings <bhutchings@solarflare.com>
Date: Mon, 28 Jun 2010 08:45:58 +0000 (+0000)
Subject: ethtool: Fix potential user buffer overflow for ETHTOOL_{G, S}RXFH
X-Git-Tag: v2.6.35-rc5~14^2~29
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=bf988435bd5b53529f4408a8efb1f433f6ddfda9;p=pandora-kernel.git

ethtool: Fix potential user buffer overflow for ETHTOOL_{G, S}RXFH

struct ethtool_rxnfc was originally defined in 2.6.27 for the
ETHTOOL_{G,S}RXFH command with only the cmd, flow_type and data
fields.  It was then extended in 2.6.30 to support various additional
commands.  These commands should have been defined to use a new
structure, but it is too late to change that now.

Since user-space may still be using the old structure definition
for the ETHTOOL_{G,S}RXFH commands, and since they do not need the
additional fields, only copy the originally defined fields to and
from user-space.

Signed-off-by: Ben Hutchings <bhutchings@solarflare.com>
Cc: stable@kernel.org
Signed-off-by: David S. Miller <davem@davemloft.net>
---

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