models/scanner: fix nullptr deref (#15)

cdes5804 · Sep 19, 2023 · 412fcdf · 412fcdf
1 parent f7a6366
commit 412fcdf
Showing 1 changed file with 5 additions and 1 deletion.
diff --git a/src/models/scanner.cpp b/src/models/scanner.cpp
@@ -11,6 +11,10 @@
 #include <arpa/inet.h>
 
 bool NetworkScanner::is_network(const struct ifaddrs *ifaddr) const {
+    if (ifaddr->ifa_addr == NULL) {
+        return false;
+    }
+
     sa_family_t family = ifaddr->ifa_addr->sa_family;
     unsigned int flags = ifaddr->ifa_flags;
     bool is_up = (flags & IFF_UP) != 0;
@@ -124,4 +128,4 @@ Interface NetworkScanner::get_interface_by_ip(const std::string &ip) const {
         }
     }
     return Interface();
-}
+}