Add index-out-of-bounds check in trie.contains

yl2chen · Sep 25, 2017 · ebd5c6c · ebd5c6c
1 parent 6a72038
commit ebd5c6c
Showing 1 changed file with 3 additions and 0 deletions.
diff --git a/trie.go b/trie.go
@@ -130,6 +130,9 @@ func (p *prefixTrie) contains(number rnet.NetworkNumber) (bool, error) {
 	if p.hasEntry() {
 		return true, nil
 	}
+	if p.targetBitPosition() < 0 {
+		return false, nil
+	}
 	bit, err := p.targetBitFromIP(number)
 	if err != nil {
 		return false, err