--- pcap.c.orig	2012-11-11 14:09:10.976000492 -0800
+++ pcap.c	2012-11-11 14:13:16.188000996 -0800
@@ -1528,6 +1528,10 @@
 			    strlen(pcap_version_string);
 			full_pcap_version_string =
 			    malloc(full_pcap_version_string_len);
+			if (full_pcap_version_string == NULL) { /* oops, malloc() failed */
+				fprintf(stderr, "warning: unable to allocate memory for pcap_version_string.\n");
+				return NULL;
+			}
 			sprintf(full_pcap_version_string,
 			    pcap_version_string_fmt, wpcap_version_string,
 			    pcap_version_string);
@@ -1545,7 +1549,10 @@
 			    strlen(packet_version_string) +
 			    strlen(pcap_version_string);
 			full_pcap_version_string = malloc(full_pcap_version_string_len);
-
+			if (full_pcap_version_string == NULL) { /* oops, malloc() failed */
+				fprintf(stderr, "warning: unable to allocate memory for pcap_version_string.\n");
+				return NULL;
+			}
 			sprintf(full_pcap_version_string,
 			    pcap_version_string_packet_dll_fmt,
 			    wpcap_version_string, packet_version_string,
@@ -1574,6 +1581,10 @@
 		    sizeof dospfx + strlen(pcap_version_string);
 		full_pcap_version_string =
 		    malloc(full_pcap_version_string_len);
+		if (full_pcap_version_string == NULL) { /* oops, malloc() failed */
+			fprintf(stderr, "warning: unable to allocate memory for pcap version string.\n");
+			return NULL;
+		}
 		strcpy(full_pcap_version_string, dospfx);
 		strcat(full_pcap_version_string, pcap_version_string);
 	}