GHSA-F9QC-QG88-7PQ5 Buffa Vulnerable to Memory Exhaustion Denial of Service in decode_unknown_field via Unbounded Allocation

The decodeunknownfield function in buffa's protobuf decoder allocated heap memory in proportion to untrusted input unknown fields in the serialized protobuf without enforcing an allocation budget. Any message decoded from untrusted input using code generated with preserveunknownfields=true the...