Envoy is a cloud-native, open source edge and service proxy. There is a crash at `QuicheDataReader::PeekVarInt62Length()`. It is caused by integer underflow in the `QuicStreamSequencerBuffer::PeekRegion()` implementation.
https://github.com/envoyproxy/envoy/security/advisories/GHSA-g9mq-6v96-cpqc