CVE-2025-70956

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Source
https://cve.org/CVERecord?id=CVE-2025-70956
Import Source
https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2025-70956.json
JSON Data
https://api.osv.dev/v1/vulns/CVE-2025-70956
Published
2026-02-13T22:16:10.290Z
Modified
2026-02-20T06:33:18.917860Z
Severity
  • 7.5 (High) CVSS_V3 - CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H CVSS Calculator
Summary
[none]
Details

A State Pollution vulnerability was discovered in the TON Virtual Machine (TVM) before v2025.04. The issue exists in the RUNVM instruction logic (VmState::runchildvm), 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.

References

Affected packages

Git / github.com/ton-blockchain/ton

Affected ranges

Type
GIT
Repo
https://github.com/ton-blockchain/ton
Events
Introduced
0 Unknown introduced commit / All previous commits are affected
Fixed
1835d84602bbaaa1593270d7ab3bb0b499920416
Introduced
0 Unknown introduced commit / All previous commits are affected
Fixed
cee4c674ea999fecc072968677a34a7545ac9c4d

Affected versions

func-0.*
func-0.0.99
func-0.1.0
func-0.2.0
func-0.3.0
func-0.4.0
func-0.4.1
func-0.4.2
func-0.4.3
func-0.4.4
func-0.4.5
func-0.4.6
Other
newton-end
newton-start
perfomance-test
tolk-0.*
tolk-0.10
tolk-0.8
tolk-0.9
tolk0.*
tolk0.7
v2022.*
v2022.05
v2022.06
v2022.08
v2022.09
v2022.10
v2022.12
v2023.*
v2023.01
v2023.03
v2023.04
v2023.05
v2023.06
v2023.10
v2023.11
v2023.12
v2024.*
v2024.01
v2024.02
v2024.03
v2024.04
v2024.06
v2024.08
v2024.09
v2024.10
v2024.12-1
v2024.12-alpha
v2025.*
v2025.02
v2025.03

Database specific

source 
"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2025-70956.json"
vanir_signatures 
[
    {
        "deprecated": false,
        "signature_version": "v1",
        "digest": {
            "function_hash": "29324889744851572738815809274921750128",
            "length": 1112.0
        },
        "source": "https://github.com/ton-blockchain/ton/commit/1835d84602bbaaa1593270d7ab3bb0b499920416",
        "signature_type": "Function",
        "id": "CVE-2025-70956-6d1fc490",
        "target": {
            "file": "crypto/vm/vm.cpp",
            "function": "VmState::run_child_vm"
        }
    },
    {
        "deprecated": false,
        "signature_version": "v1",
        "digest": {
            "threshold": 0.9,
            "line_hashes": [
                "53894155880948149276052901331365173357",
                "79104320538571693451214850926176828564",
                "307083205793735348047708172252774912473",
                "231488853471609936760833955600202851377"
            ]
        },
        "source": "https://github.com/ton-blockchain/ton/commit/1835d84602bbaaa1593270d7ab3bb0b499920416",
        "signature_type": "Line",
        "id": "CVE-2025-70956-8d510ee1",
        "target": {
            "file": "crypto/vm/vm.cpp"
        }
    }
]