diff --git a/net/ipv6/raw.c b/net/ipv6/raw.c
index 60f1e4f5be5a..c51d5ce3711c 100644
--- a/net/ipv6/raw.c
+++ b/net/ipv6/raw.c
@@ -1020,6 +1020,9 @@ static int do_rawv6_setsockopt(struct sock *sk, int level, int optname,
 	struct raw6_sock *rp = raw6_sk(sk);
 	int val;
 
+	if (optlen < sizeof(val))
+		return -EINVAL;
+
 	if (copy_from_sockptr(&val, optval, sizeof(val)))
 		return -EFAULT;