Index: pcap-usb-linux.c
===================================================================
RCS file: /tcpdump/master/libpcap/pcap-usb-linux.c,v
retrieving revision 1.16
diff -u -p -r1.16 pcap-usb-linux.c
--- pcap-usb-linux.c	14 Sep 2007 01:55:49 -0000	1.16
+++ pcap-usb-linux.c	30 Nov 2007 08:15:17 -0000
@@ -29,6 +29,7 @@
  *
  * USB sniffing API implementation for Linux platform
  * By Paolo Abeni <paolo.abeni () email it>
+ * Modifications: Kris Katterjohn <kjak () users sourceforge net>
  *
  */
 #ifndef lint
@@ -528,8 +529,15 @@ usb_stats_linux(pcap_t *handle, struct p
 
 	/* extract info on dropped urbs */
 	for (consumed=0; consumed < ret; ) {
+		/* from the sscanf man page: 
+ 		 * The C standard says: "Execution of a %n directive does 
+ 		 * not increment the assignment count returned at the completion
+		 * of  execution" but the Corrigendum seems to contradict this.
+		 * Do not make any assumptions on the effect of %n conversions 
+		 * on the return value and explicitly check for cnt assignmet*/
+		cnt = -1;
 		int ntok = sscanf(ptr, "%s%n", token, &cnt);
-		if (ntok != 2)
+		if ((ntok < 1) || (cnt < 0))
 			break;
 		consumed += cnt;
 		ptr += cnt;
@@ -537,7 +545,7 @@ usb_stats_linux(pcap_t *handle, struct p
 			ret = sscanf(ptr, "%d", &stats->ps_drop);
 		else 
 			ret = sscanf(ptr, "%d", &dummy);
-		if (ntok != 2)
+		if (ntok != 1)
 			break;
 		consumed += cnt;
 		ptr += cnt;