$NetBSD: patch-ca,v 1.2 2008/02/13 14:16:43 kefren Exp $
--- mcs/class/Mono.Security/Mono.Math/BigInteger.cs.orig	2008-02-05 14:19:30.000000000 +0200
+++ mcs/class/Mono.Security/Mono.Math/BigInteger.cs	2008-02-05 14:19:44.000000000 +0200
@@ -1607,7 +1607,7 @@
 						uint j = 1;
 
 						// Multiply and add
-						for (; j < m.length; j++) {
+						for (; j < m.length && j < A.length; j++) {
 							c += (ulong)u_i * (ulong)*(mP++) + *(aSP++);
 							*(aDP++) = (uint)c;
 							c >>= 32;