From: Lorenzo Bianconi lorenzo@kernel.org
[ Upstream commit f27b405ef43319a3ceefc2123245201a63ed4e00 ]
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: c4f033d9e03e9 ("net: ethernet: mtk_eth_soc: rework hardware flow table management") Signed-off-by: Lorenzo Bianconi lorenzo@kernel.org Signed-off-by: David S. Miller davem@davemloft.net Signed-off-by: Sasha Levin sashal@kernel.org --- drivers/net/ethernet/mediatek/mtk_ppe.h | 3 +++ 1 file changed, 3 insertions(+)
diff --git a/drivers/net/ethernet/mediatek/mtk_ppe.h b/drivers/net/ethernet/mediatek/mtk_ppe.h index 1f5cf1c9a9475..69ffce04d6306 100644 --- a/drivers/net/ethernet/mediatek/mtk_ppe.h +++ b/drivers/net/ethernet/mediatek/mtk_ppe.h @@ -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)