linux/net/core/ethtool.c
Joe Perches 3f90898b43 ethtool: Use kcalloc instead of kmalloc for ethtool_get_strings
[ Upstream commit 077cb37fcf ]

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: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2015-10-27 09:51:51 +09:00

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48 KiB