Commit f27b405e authored by Lorenzo Bianconi's avatar Lorenzo Bianconi Committed by David S. Miller
Browse files

net: ethernet: mtk_eth_soc: check max allowed hash in mtk_ppe_check_skb 



Even if max hash configured in hw in mtk_ppe_hash_entry is
MTK_PPE_ENTRIES - 1, check theoretical OOB accesses in
mtk_ppe_check_skb routine

Fixes: c4f033d9 ("net: ethernet: mtk_eth_soc: rework hardware flow table management")
Signed-off-by: default avatarLorenzo Bianconi <lorenzo@kernel.org>
Signed-off-by: default avatarDavid S. Miller <davem@davemloft.net>
parent 9cb252c4

drivers/net/ethernet/mediatek/mtk_ppe.h

+3 −0
Original line number Diff line number Diff line
@@ -293,6 +293,9 @@ mtk_ppe_check_skb(struct mtk_ppe *ppe, struct sk_buff *skb, u16 hash) 
	if (!ppe)

		return;



	if (hash > MTK_PPE_HASH_MASK)

		return;



	now = (u16)jiffies;

	diff = now - ppe->foe_check_time[hash];

	if (diff < HZ / 10)