High · published September 3, 2026
Previously, a channel registered in the mux's chanList is not usable until it is established. A malicious peer was able flood the channel's incomingRequests, deadlocking the entire connection. Now, we add an atomic established state, set when a channel becomes usable. Until such a time, handlePacket drops every packet other than the open confirmation/failure, without blocking and without tearing down the connection.
| Product | Versions | Fixed in |
|---|---|---|
| golang/crypto | < 0.56.0 | 0.56.0 |