CVE-2025-70956
HighSummary
W maszynie wirtualnej TON (TVM) przed wersją v2025.04 odkryto podatność typu State Pollution. Problem występuje w logice instrukcji RUNVM, która odpowiada za inicjalizację podrzędnych maszyn wirtualnych, co może prowadzić do uszkodzenia stanu rodzica.
Risk Assessment
Organizacja może doświadczyć nieoczekiwanego zachowania lub odmowy usługi w kontekście kontraktu, gdy maszyna wirtualna rodzica działa w uszkodzonym stanie.
Recommendation
Zaleca się aktualizację do wersji TVM v2025.04 lub nowszej, aby usunąć tę podatność oraz monitorowanie systemu pod kątem nieprawidłowego działania.
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Original NVD description (English source)
A State Pollution vulnerability was discovered in the TON Virtual Machine (TVM) before v2025.04. The issue exists in the RUNVM instruction logic (VmState::run_child_vm), which is responsible for initializing child virtual machines. The operation moves critical resources (specifically libraries and log) from the parent state to a new child state in a non-atomic manner. If an Out-of-Gas (OOG) exception occurs after resources are moved but before the state transition is finalized, the parent VM retains a corrupted state where these resources are emptied/invalid. Because RUNVM supports gas isolation, the parent VM continues execution with this corrupted state, leading to unexpected behavior or denial of service within the contract's context.