OSS-Fuzz report: https://bugs.chromium.org/p/oss-fuzz/issues/detail?id=13682
Crash type: Heap-buffer-overflow READ {*} Crash state: ptls_set_negotiated_protocol client_handle_encrypted_extensions handle_handshake_record
{ "severity": "MEDIUM", "introduced_range": "unknown:4965a3820533a979fb01da26cd4d6e1fea89e5b7" }