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

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
......@@ -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)
......
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