diff --git a/net/netfilter/nf_conntrack_h323_asn1.c b/net/netfilter/nf_conntrack_h323_asn1.c
index 62aa22a07876..c972e9488e16 100644
--- a/net/netfilter/nf_conntrack_h323_asn1.c
+++ b/net/netfilter/nf_conntrack_h323_asn1.c
@@ -331,6 +331,8 @@ static int decode_int(struct bitstr *bs, const struct field_t *f,
 		if (nf_h323_error_boundary(bs, 0, 2))
 			return H323_ERROR_BOUND;
 		len = get_bits(bs, 2) + 1;
+		if (nf_h323_error_boundary(bs, len, 0))
+			return H323_ERROR_BOUND;
 		BYTE_ALIGN(bs);
 		if (base && (f->attr & DECODE)) {	/* timeToLive */
 			unsigned int v = get_uint(bs, len) + f->lb;