Commit 973507cb authored Aug 08, 2009 by roel kluin Committed by David S. Miller Aug 09, 2009

mlx4_en: Fix read buffer overflow in mlx4_en_complete_rx_desc()



If the length is less or equal to frag_prefix_size in the first iteration
we write skb_frags_rx[-1] and read from priv->frag_info[-1]

Signed-off-by: Roel Kluin <roel.kluin@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

parent be12159b

drivers/net/mlx4/en_rx.c

+3 −2

Original line number	Diff line number	Diff line
		@@ -506,6 +506,7 @@ static int mlx4_en_complete_rx_desc(struct mlx4_en_priv *priv,
		PCI_DMA_FROMDEVICE);
		}
		/* Adjust size of last fragment to match actual length */
		if (nr > 0)
		skb_frags_rx[nr - 1].size = length -
		priv->frag_info[nr - 1].frag_prefix_size;
		return nr;