Ignore key backup acks for unknown sessions

mautrix · Jul 10, 2023 · 47de368 · 47de368
1 parent 4639f0c
commit 47de368
Showing 1 changed file with 3 additions and 0 deletions.
diff --git a/crypto/keysharing.go b/crypto/keysharing.go
@@ -339,6 +339,9 @@ func (mach *OlmMachine) handleBeeperRoomKeyAck(ctx context.Context, sender id.Us
 			log.Err(err).Msg("Failed to get group session to check if it should be redacted")
 		}
 		return
+	} else if sess == nil {
+		log.Warn().Msg("Got key backup ack for unknown session")
+		return
 	}
 	log = log.With().
 		Str("sender_key", sess.SenderKey.String()).