OSV-2020-256 Global-buffer-overflow in dissect_wassp_sub_tlv

OSS-Fuzz report: https://bugs.chromium.org/p/oss-fuzz/issues/detail?id=20004 Crash type: Global-buffer-overflow READ 8 Crash state: dissectwasspsubtlv dissectwasspsubtlv dissectwassptlv...