diff --git a/net/ethtool/coalesce.c b/net/ethtool/coalesce.c
index 1e2c5c7048a8..e73fc3e5a02b 100644
--- a/net/ethtool/coalesce.c
+++ b/net/ethtool/coalesce.c
@@ -472,6 +472,12 @@ static int ethnl_update_profile(struct net_device *dev,
 
 	nla_for_each_nested_type(nest, ETHTOOL_A_PROFILE_IRQ_MODERATION,
 				 nests, rem) {
+		if (i >= NET_DIM_PARAMS_NUM_PROFILES) {
+			NL_SET_BAD_ATTR(extack, nest);
+			ret = -E2BIG;
+			goto err_out;
+		}
+
 		ret = nla_parse_nested(tb, len_irq_moder - 1, nest,
 				       coalesce_irq_moderation_policy,
 				       extack);