RTP: fix a possible NULL pointer dereference (CID 1397705 & 1397706)
As those dissectors are registered by name, let's not make the assumption that rtp_info is always present. Change-Id: I959b8c71485471b3be4cd2e71a6d96c2d4b278ff Reviewed-on: https://code.wireshark.org/review/19381 Reviewed-by: Pascal Quantin <pascal.quantin@gmail.com> Petri-Dish: Pascal Quantin <pascal.quantin@gmail.com> Tested-by: Petri Dish Buildbot <buildbot-no-reply@wireshark.org> Reviewed-by: Anders Broman <a.broman58@gmail.com>
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@ -2476,7 +2476,7 @@ static char *ed137_squ_only = "SQU";
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static char *ed137_ptt_and_squ = "PTT+SQU";
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static int
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dissect_rtp_hdr_ext_ed137(tvbuff_t *tvb, packet_info *pinfo, proto_tree *tree, void* data _U_ )
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dissect_rtp_hdr_ext_ed137(tvbuff_t *tvb, packet_info *pinfo, proto_tree *tree, void* data)
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{
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unsigned int hdr_extension_len;
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struct _rtp_info *rtp_info=(struct _rtp_info *)data;
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@ -2491,7 +2491,9 @@ dissect_rtp_hdr_ext_ed137(tvbuff_t *tvb, packet_info *pinfo, proto_tree *tree, v
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gboolean ed137_ptt = FALSE;
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gboolean ed137_squ = FALSE;
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if (rtp_info != NULL) {
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rtp_info->info_is_ed137 = TRUE;
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}
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if ( tree ) {
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proto_item *ti;
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ti = proto_tree_add_item(tree, hf_rtp_hdr_ed137s, tvb, offset, hdr_extension_len * 4, ENC_NA);
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@ -2590,7 +2592,7 @@ dissect_rtp_hdr_ext_ed137(tvbuff_t *tvb, packet_info *pinfo, proto_tree *tree, v
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}
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static int
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dissect_rtp_hdr_ext_ed137a(tvbuff_t *tvb, packet_info *pinfo, proto_tree *tree, void* data _U_ )
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dissect_rtp_hdr_ext_ed137a(tvbuff_t *tvb, packet_info *pinfo, proto_tree *tree, void* data)
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{
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unsigned int hdr_extension_len;
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struct _rtp_info *rtp_info=(struct _rtp_info *)data;
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@ -2605,7 +2607,9 @@ dissect_rtp_hdr_ext_ed137a(tvbuff_t *tvb, packet_info *pinfo, proto_tree *tree,
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gboolean ed137_ptt = FALSE;
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gboolean ed137_squ = FALSE;
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if (rtp_info != NULL) {
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rtp_info->info_is_ed137 = TRUE;
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}
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if ( tree ) {
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proto_item *ti;
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ti = proto_tree_add_item(tree, hf_rtp_hdr_ed137s, tvb, offset, hdr_extension_len * 4, ENC_NA);
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