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packet-dcm.c: Fix infinite loop 

https://bugs.chromium.org/p/oss-fuzz/issues/detail?id=1329
Bug: 13685
Change-Id: Ic70cf8185beeb4cfa9417c287cf963e1c56bf86c
Reviewed-on: https://code.wireshark.org/review/21529
Reviewed-by: Michael Mann <mmann78@netscape.net>
This commit is contained in:
Michael Mann 2017-05-05 17:23:59 -04:00
parent 0e53c857e5
commit 538abdfbc2
1 changed files with 1 additions and 1 deletions
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2
epan/dissectors/packet-dcm.c
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@ -6692,7 +6692,7 @@ dissect_dcm_pdu_data(tvbuff_t *tvb, packet_info *pinfo, proto_tree *tree,
pdvlen_item = proto_tree_add_item(pdv_ptree, hf_dcm_pdv_len, tvb, offset, 4, ENC_BIG_ENDIAN);
offset += 4;
if (pdv_len + 4 > pdu_len) {
if ((pdv_len + 4 > pdu_len) || (pdv_len + 4 < pdv_len)) {
expert_add_info_format(pinfo, pdvlen_item, &ei_dcm_pdv_len, "Invalid PDV length (too large)");
return endpos;
}