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authorPatric Stout <truebrain@openttd.org>2021-09-05 18:17:39 +0200
committerGitHub <noreply@github.com>2021-09-05 18:17:39 +0200
commitf656b0ae966052327a6341be8dee65cfd2f395b8 (patch)
tree09e16baa180811f756c4959d7736ed5c5dfdefab /src/network/network_turn.h
parent9c74dc2468afbcbfb2acbee4ac6a56c7a8173529 (diff)
downloadopenttd-f656b0ae966052327a6341be8dee65cfd2f395b8.tar.xz
Fix: use-after-free after ClientNetworkCoordinatorSocketHandler::CloseAllConnections() (#9534)
The function clears all stun-handlers. This causes all of those objects to be destroyed. A handler can have a pending connecter, which was only killed in case CloseConnection() was called. This is never the case when the object is destroyed. In result, the connecter could finish and cause a use-after-free by calling into the (now deleted) handler.
Diffstat (limited to 'src/network/network_turn.h')
-rw-r--r--src/network/network_turn.h1
1 files changed, 1 insertions, 0 deletions
diff --git a/src/network/network_turn.h b/src/network/network_turn.h
index cc569a977..fba25447a 100644
--- a/src/network/network_turn.h
+++ b/src/network/network_turn.h
@@ -30,6 +30,7 @@ public:
ClientNetworkTurnSocketHandler(const std::string &token, uint8 tracking_number, const std::string &connection_string) : token(token), tracking_number(tracking_number), connection_string(connection_string) {}
NetworkRecvStatus CloseConnection(bool error = true) override;
+ ~ClientNetworkTurnSocketHandler() override;
void SendReceive();
void Connect();