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-rw-r--r--epan/dissectors/packet-isup.c4
1 files changed, 3 insertions, 1 deletions
diff --git a/epan/dissectors/packet-isup.c b/epan/dissectors/packet-isup.c
index 7df8e98743..f4f48ac14a 100644
--- a/epan/dissectors/packet-isup.c
+++ b/epan/dissectors/packet-isup.c
@@ -3151,12 +3151,14 @@ dissect_isup_connected_number_parameter(tvbuff_t *parameter_tvb, proto_tree *par
proto_tree_add_uint(parameter_tree, hf_isup_screening_indicator, parameter_tvb, 1, 1, indicators2);
offset = 2;
+ length = tvb_length_remaining(parameter_tvb, offset);
+ if (length == 0)
+ return; /* empty connected number */
address_digits_item = proto_tree_add_text(parameter_tree, parameter_tvb,
offset, -1,
"Connected Number");
address_digits_tree = proto_item_add_subtree(address_digits_item, ett_isup_address_digits);
- length = tvb_length_remaining(parameter_tvb, offset);
while(length > 0){
address_digit_pair = tvb_get_guint8(parameter_tvb, offset);
proto_tree_add_uint(address_digits_tree, hf_isup_calling_party_odd_address_signal_digit, parameter_tvb, offset, 1, address_digit_pair);