99 lines
4.0 KiB
Diff
99 lines
4.0 KiB
Diff
From e18d0e369729b0fff5f76f41cbae67e97c2e52e5 Mon Sep 17 00:00:00 2001
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From: Gerald Combs <gerald@wireshark.org>
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Date: Tue, 23 May 2023 13:52:03 -0700
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Subject: [PATCH] XRA: Fix an infinite loop
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C compilers don't care what size a value was on the wire. Use
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naturally-sized ints, including in dissect_message_channel_mb where we
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would otherwise overflow and loop infinitely.
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Fixes #19100
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(cherry picked from commit ce87eac0325581b600b3093fcd75080df14ccfda)
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Conflicts:
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epan/dissectors/packet-xra.c
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---
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epan/dissectors/packet-xra.c | 16 ++++++++--------
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1 file changed, 8 insertions(+), 8 deletions(-)
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diff --git a/epan/dissectors/packet-xra.c b/epan/dissectors/packet-xra.c
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index ef8437e9382..4c3713db94b 100644
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--- a/epan/dissectors/packet-xra.c
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+++ b/epan/dissectors/packet-xra.c
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@@ -445,7 +445,7 @@ dissect_xra_tlv_cw_info(tvbuff_t * tvb, proto_tree * tree, void* data _U_, guint
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it = proto_tree_add_item (tree, hf_xra_tlv_cw_info, tvb, 0, tlv_length, ENC_NA);
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xra_tlv_cw_info_tree = proto_item_add_subtree (it, ett_xra_tlv_cw_info);
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- guint32 tlv_index =0;
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+ unsigned tlv_index = 0;
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while (tlv_index < tlv_length) {
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guint8 type = tvb_get_guint8 (tvb, tlv_index);
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++tlv_index;
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@@ -500,7 +500,7 @@ dissect_xra_tlv_ms_info(tvbuff_t * tvb, proto_tree * tree, void* data _U_, guint
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it = proto_tree_add_item (tree, hf_xra_tlv_ms_info, tvb, 0, tlv_length, ENC_NA);
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xra_tlv_ms_info_tree = proto_item_add_subtree (it, ett_xra_tlv_ms_info);
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- guint32 tlv_index =0;
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+ unsigned tlv_index = 0;
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while (tlv_index < tlv_length) {
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guint8 type = tvb_get_guint8 (tvb, tlv_index);
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++tlv_index;
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@@ -534,7 +534,7 @@ dissect_xra_tlv_burst_info(tvbuff_t * tvb, proto_tree * tree, void* data _U_, gu
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it = proto_tree_add_item (tree, hf_xra_tlv_burst_info, tvb, 0, tlv_length, ENC_NA);
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xra_tlv_burst_info_tree = proto_item_add_subtree (it, ett_xra_tlv_burst_info);
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- guint32 tlv_index =0;
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+ unsigned tlv_index = 0;
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while (tlv_index < tlv_length) {
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guint8 type = tvb_get_guint8 (tvb, tlv_index);
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++tlv_index;
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@@ -574,7 +574,7 @@ dissect_xra_tlv(tvbuff_t * tvb, packet_info * pinfo, proto_tree * tree, void* da
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it = proto_tree_add_item (tree, hf_xra_tlv, tvb, 0, tlv_length, ENC_NA);
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xra_tlv_tree = proto_item_add_subtree (it, ett_xra_tlv);
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- guint32 tlv_index =0;
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+ unsigned tlv_index = 0;
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tvbuff_t *xra_tlv_cw_info_tvb, *xra_tlv_ms_info_tvb, *xra_tlv_burst_info_tvb;
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while (tlv_index < tlv_length) {
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@@ -718,7 +718,7 @@ dissect_message_channel_mb(tvbuff_t * tvb, packet_info * pinfo, proto_tree* tree
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if(packet_start_pointer_field_present) {
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proto_tree_add_item_ret_uint (tree, hf_plc_mb_mc_psp, tvb, 1, 2, FALSE, &packet_start_pointer);
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- guint16 docsis_start = 3 + packet_start_pointer;
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+ unsigned docsis_start = 3 + packet_start_pointer;
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while (docsis_start + 6 < remaining_length) {
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/*DOCSIS header in packet*/
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guint8 fc = tvb_get_guint8(tvb,docsis_start + 0);
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@@ -727,7 +727,7 @@ dissect_message_channel_mb(tvbuff_t * tvb, packet_info * pinfo, proto_tree* tree
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docsis_start += 1;
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continue;
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}
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- guint16 docsis_length = 256*tvb_get_guint8(tvb,docsis_start + 2) + tvb_get_guint8(tvb,docsis_start + 3);
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+ unsigned docsis_length = 256*tvb_get_guint8(tvb,docsis_start + 2) + tvb_get_guint8(tvb,docsis_start + 3);
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if (docsis_start + 6 + docsis_length <= remaining_length) {
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/*DOCSIS packet included in packet*/
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tvbuff_t *docsis_tvb;
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@@ -797,7 +797,7 @@ dissect_ncp_message_block(tvbuff_t * tvb, proto_tree * tree) {
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static int
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dissect_plc(tvbuff_t * tvb, packet_info * pinfo, proto_tree * tree, void* data _U_) {
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- guint16 offset = 0;
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+ int offset = 0;
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proto_tree *plc_tree;
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proto_item *plc_item;
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tvbuff_t *mb_tvb;
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@@ -857,7 +857,7 @@ dissect_plc(tvbuff_t * tvb, packet_info * pinfo, proto_tree * tree, void* data _
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static int
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dissect_ncp(tvbuff_t * tvb, proto_tree * tree, void* data _U_) {
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- guint16 offset = 0;
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+ int offset = 0;
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proto_tree *ncp_tree;
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proto_item *ncp_item;
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tvbuff_t *ncp_mb_tvb;
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--
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GitLab
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