From: Joe Perches <joe@perches.com>
Date: Wed, 14 Oct 2015 08:09:40 +0000 (-0700)
Subject: ethtool: Use kcalloc instead of kmalloc for ethtool_get_strings
X-Git-Tag: v3.2.73~7
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=68c3e59aa9cdf2d8870d8fbe4f37b1a509d0abeb;p=pandora-kernel.git

ethtool: Use kcalloc instead of kmalloc for ethtool_get_strings

[ Upstream commit 077cb37fcf6f00a45f375161200b5ee0cd4e937b ]

It seems that kernel memory can leak into userspace by a
kmalloc, ethtool_get_strings, then copy_to_user sequence.

Avoid this by using kcalloc to zero fill the copied buffer.

Signed-off-by: Joe Perches <joe@perches.com>
Acked-by: Ben Hutchings <ben@decadent.org.uk>
Signed-off-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Ben Hutchings <ben@decadent.org.uk>
---

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