diff --git a/net/wireless/nl80211.c b/net/wireless/nl80211.c
index 86b0848242ef..8b2683262be5 100644
--- a/net/wireless/nl80211.c
+++ b/net/wireless/nl80211.c
@@ -5288,6 +5288,10 @@ 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++;
 		/*