Check that NPF_GetLoopbackOpen returned non-NULL. Fixes nmap/nmap#1591

tools-env · May 10, 2019 · fe864ea · fe864ea
1 parent 8f79161
commit fe864ea
Showing 1 changed file with 1 addition and 1 deletion.
diff --git a/packetWin7/npf/npf/Loopback.c b/packetWin7/npf/npf/Loopback.c
@@ -606,7 +606,7 @@ NPF_NetworkClassify(
 
 	// Send the loopback packets data to the user-mode code.
 	LoopbackOpen = NPF_GetLoopbackOpen();
-	if (NPF_StartUsingBinding(LoopbackOpen)) {
+	if (LoopbackOpen && NPF_StartUsingBinding(LoopbackOpen)) {
 
 		/* Lock the group */
 		NdisAcquireSpinLock(&LoopbackOpen->GroupLock);