diff --git a/net/wireless/nl80211.c b/net/wireless/nl80211.c
index c5d7d240e647..fee7b1b61ec6 100644
--- a/net/wireless/nl80211.c
+++ b/net/wireless/nl80211.c
@@ -6327,6 +6327,10 @@ static int validate_scan_freqs(struct nlattr *freqs)
 	struct nlattr *attr1, *attr2;
 	int n_channels = 0, tmp1, tmp2;
 
+	nla_for_each_nested(attr1, freqs, tmp1)
+		if (nla_len(attr1) != sizeof(u32))
+			return 0;
+
 	nla_for_each_nested(attr1, freqs, tmp1) {
 		n_channels++;
 		/*