fix(cbor): Fix Cbor Map with odd elements number decoding #4610
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Pull request overview
This pull request adds validation to detect malformed CBOR maps with an odd number of elements and includes a test to verify the fix. The change prevents the decoder from attempting to pair up elements when a map has an incomplete key-value pair, which would lead to undefined behavior.
- Added validation in
Decode::getMapElements()to throw an exception when a CBOR map has an odd number of elements - Added a test case to verify that indefinite-length CBOR maps with odd element counts are properly rejected
Reviewed changes
Copilot reviewed 2 out of 2 changed files in this pull request and generated 2 comments.
| File | Description |
|---|---|
| src/Cbor.cpp | Added validation to check for odd number of elements in CBOR maps before pairing them up, preventing potential out-of-bounds access |
| tests/common/CborTests.cpp | Added test case that verifies an exception is thrown when decoding a malformed indefinite-length CBOR map with odd element count |
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Binary size comparison➡️ aarch64-apple-ios: 14.33 MB ➡️ aarch64-apple-ios-sim: 14.33 MB ➡️ aarch64-linux-android: 18.76 MB ➡️ armv7-linux-androideabi: 16.18 MB ➡️ wasm32-unknown-emscripten: 13.67 MB |
davidkulman-tw
approved these changes
Jan 9, 2026
erdemaslan-tw
approved these changes
Jan 9, 2026
sergei-boiko-trustwallet
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Jan 14, 2026
* fiux(ci): Use `iPhone 16` in ios-release (#4493) * Throw exception rather than SIGSEGV (#4443) * Throw exception rather than SIGSEGV * Fix test cases * Add NULL checker for exceptionClass * feat(Plasma): Add Plasma Mainnet (#4499) * feat(plasma): Add Plasma Mainnet * feat(plasma): Add mobile tests * [Solana]: Adds ability to transfer tokens to the feepayer (#4503) * Initial setup * Minor updates * Restructure * fix(barz): Replace u32 parameters with i32 (#4504) * Disallow to use unsigned integer parameters within class methods * fix(data): Allocate empty array on `tw_data_create_with_bytes` if data is NULL (#4508) * fix(data): Allocate empty array on `tw_data_create_with_bytes` if data is NULL * fix(data): Add TWData test * feat(Biz): Add helper functions to support `BizPasskeySessionAccount` (#4516) * feat(biz-passkey): Add `TWBarzEncodeRegisterSessionCall` FFI * feat(biz-passkey): Add `TWBarzEncodeRemoveSessionCall` FFI * feat(biz-passkey): Add `TWBarzEncodePasskeySessionNonce` FFI * feat(biz-passkey): Add `TWBarzEncodeExecuteWithPasskeySessionCall` FFI * refactor(barz): Move some functions to TWBiz and TWEip7702 modules * feat(biz): Add WebAuthn * feat(biz): Add `TWWebAuthnGetMessageHash` and `TWWebAuthnGetFormattedSignature` * feat(biz): Fix C++ and Mobile * Rename `TWWebAuthn` module to `TWWebAuthnSolidity` * feat(biz): Adjust `executeWithPasskeySession` arguments * feat(biz): Fix fmt * feat(biz): Add Biz Android tests * feat(biz): Add final Biz Android test * feat(biz): Fix lints * feat(biz): Minor change * feat(biz): fmt * feat(solana): Add `SolanaTransaction.insertTransferInstruction()` (#4523) * feat(solana): Add `transfer_to_fee_payer` instruction * feat(solana): Add `tw_solana_transaction_insert_transfer_instruction` FFI * feat(solana): Add a note comment * feat(solana): Add one more comment * feat(zcash): Add support for TEX address (#4527) * feat(zcash): Add `TexAddress` in Rust * feat(zcash): Add successfully broadcasted transaction test * feat(zcash): Add successfully broadcasted transaction C++ test * feat(zcash): Fix C++ tests * feat(zcash): Reuse code in `TexAddress::isValid` * feat(zcash): Fix `TexAddress:isValid` * [Solana]: Renames fee recipient token account for clarity (#4528) * [Solana]: Renames fee recipient token account for clarity * Fix typo * Feature: Add trade and secured fields to THORChain Asset (#4500) * my tracked commit * MsgInstantiateContract * revert formatting * test * Tests fixes and broadcast * cargo fmt * remove unused * feat: add trade and secured fields to Thorchain Asset - Add trade and secured boolean fields to Asset proto message - Update ThorchainAsset struct in Rust with new fields - Update asset initialization in tx_builder.rs - Matches Thorchain blockchain Asset struct definition --------- Co-authored-by: gupnik <mail.guptanikhil@gmail.com> * feat(kusama-asset-hub): Add ability to force to use `ChargeAssetTxPayment` (#4541) * feat(kusama-asset-hub): Add ability to force to use `ChargeAssetTxPayment` for native tip * feat(kusama-asset-hub): Add a unit test * feat(monad): Add Monad testnet (#4543) * feat(monad): Update Monad to mainnet (#4550) * TODO update explorer * feat(monad): Update block explorer (#4553) * feat(monad): Update explorer * feat(monad): Update explorer schema * Fix incorrect value of NO_PAD constant (#4487) Co-authored-by: Sergei Boiko <127754187+satoshiotomakan@users.noreply.github.com> * fix(public-key): Fix `PublicKey::verify` by adding signature length validation (#4565) * fix(public-key): Fix `PublicKey::verify` by adding signature length validation * fix(public-key): Fix PR comments * Fix Reveal Operations for Seoul Protocol (#4557) * Since the Seoul protocol, reveal operations require the presence of a boolean for whether or not the proof field is present. This is required when manually forging bytes. Added. * Fix TezosTests.swift * Fix TezosTests.swift * Update tests * Update tests * Fix TezosCompiler.CompileWithSignatures * Fix TezosCompiler.CompileWithSignatures * fix(tezos): Fix Tezos compile test * fix(tezos): Fix Tezos signing test * fix(tezos): Add mainnet test transaction --------- Co-authored-by: gupnik <nikhil.g@trustwallet.com> Co-authored-by: Sergei Boiko <satoshiotomakan8@gmail.com> * fix(public-key): Check zilliqa schnorr signature size (#4571) * fix(public-key): Check zilliqa schnorr signature size * Replace assert macros with proper checks * fix(public-key): Address a PR comment * fix(public-key): Address a PR comments * fix(public-key): Fix a bug in PublicKey constructor * feat(pczt): Add implementation of PCZT signing (#4576) * feat(pczt): Add implementation of PCZT signing * feat(pczt): Add a successfully broadcasted tx test * feat(pczt): Address PR comments * fix(webauthn): Fix buffer out of bounds (#4577) * fix(webauthn): Fix buffer out of bounds * fix(webauthn): Fix `TWWebAuthnGetRSValues` implicit Data conversion * fix(webauthn): Extra checks for algorithm, and public key parts * fix(webauthn): Test common buffer overflows * fix(webauthn): Check `crv` and `kty` parameters * fix(private-key): Add PrivateKey Data move constructor * chore(noexcept): Remove wrong noexcept * fix(private-key): Zeroize memory on move `operator=` * fix(private-key): Avoid cleaning private key if self-assign * fix(aes): Add iv size validation (#4580) * fix(aes): Add iv size validation * fix(aes): Add unit tests * Update Dockerfile to install cbindgen with --locked and provide explicit links to clang binaries (#4568) * install cbindgen with --locked * add explicit links to clang/clang++ since CMake will not use the ENV --------- Co-authored-by: Sergei Boiko <127754187+satoshiotomakan@users.noreply.github.com> * feat(stable-account): Add `TWDerivationSmartChainStableAccount` derivation type (#4585) * fix(overflow): Fix integer overflows in `BinaryEncoding` and `Pactus` (#4592) * fix(binary-coding): Avoid unsigned integer overflow * fix(pactus): Avoid unsigned integer overflow * feat(tron): Add `raw_data_hex` parameter in JSON transaction representation (#4593) * feat(tron): Add `raw_data_hex` parameter in JSON transaction representation * feat(tron): Fix iOS test * feat(biz): Add `Biz.signExecuteWithSignatureCall` and `BizPasskeySession.signExecuteWithSignatureCall` (#4594) * feat(biz): Add `Biz.SignExecuteWithSignatureCall` * Add new `BizPasskeySession` module * feat(biz): Add `Biz.SignExecuteWithSignatureCall` * Finish `BizPasskeySession` module separation * feat(biz): Fix android tests * feat(biz): Address PR review comments * chore(codeowners): Add onchain-corex-enabling team to CODEOWNERS (#4600) * fix(ethereum-abi): Fix Ethereum ABI type parsing recursion + chore actions and toolchain (#4597) * fix(ethereum-abi): Fix Ethereum ABI type parsing recursion * fix(ethereum-abi): Freeze community github actions * chore(rust): Bump rust toolchain version to nightly-2025-12-11 * chore(wasm): Try to update emsdk to 4.0.22 * chore(rust): Decrease code coverage to 94.1 due to a recent toolchain update * chore(rust): Freeze `actions` hashes --------- Co-authored-by: Sergei Boiko <satoshiotomakan8@gmail.com> Co-authored-by: Sergei <> * chore(actions): Replace unverified actions with GH scripts (#4604) * chore(actions): Replace unverified actions with GH scripts * chore(actions): Update rust toolchain in Dockerfile * fix(bitcoin-v2): Fail if `max_amount_output` provided with `outputs` or `change_output` at a time (#4607) * fix(bitcoin-v2): Fail if `max_amount_output` provided with `outputs` or `change_output` at a time * fix(bitcoin-v2): PR notes * fix(cbor): Fix Cbor Map with odd elements number decoding (#4610) * fix(cbor): Fix Cbor Map with odd elements number decoding * fix(cbor): Change test name * chore(sync): Fix merge conflicts Breaking changes: * The following FFIs take i32 instead of u32 due to Kotlin bindings limitations: `tw_hd_node_create_with_seed`, `tw_hd_node_create_with_extended_private_key`, `tw_hd_node_derive_from_path`, `tw_hd_node_extended_private_key`, `tw_hd_node_extended_public_key`, `tw_hd_node_public_create_with_extended_public_key`, `tw_hd_node_public_derive_from_path`, `tw_mnemonic_generate`, `tw_mnemonic_get_word`, `tw_pbkdf2_hmac_sha512`, `tw_ecdsa_pubkey_hash` * `crypto_scrypt` FFI is no longer marked as `tw_ffi` to avoid changing u32 and usize argument types to i32 * chore(sync): Increase test coverage * Add Bitcoin PSBT compile test * Add `PrivateKey.CopyAssignmentOperator` and `PrivateKey.MoveAssignmentOperator` tests * Copy Rust TWMnemonic tests to C++ * Copy Rust Biz tests to C++ * Copy Rust BizPasskeySession tests to C++ * chore(sync): Push missing PSBT implementation + remove unused code * chore(sync): Fix Biz android tests --------- Co-authored-by: Sergei Boiko <127754187+satoshiotomakan@users.noreply.github.com> Co-authored-by: 10gic <github10gic@proton.me> Co-authored-by: gupnik <nikhil.g@trustwallet.com> Co-authored-by: Enrique Souza <enriquesouza@live.com> Co-authored-by: gupnik <mail.guptanikhil@gmail.com> Co-authored-by: Corey Soreff <csoreff@gmail.com> Co-authored-by: Sergei Boiko <satoshiotomakan8@gmail.com> Co-authored-by: Joey Yandle <xoloki@gmail.com>
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This pull request adds stricter validation for CBOR maps and introduces a corresponding unit test to ensure malformed maps are properly detected. The main change enforces that CBOR maps must have an even number of elements, preventing incorrect parsing of malformed data.
Validation improvements:
Decode::getMapElements()(insrc/Cbor.cpp) to throw astd::invalid_argumentexception if the decoded CBOR map has an odd number of elements, ensuring only valid CBOR maps are processed.Testing enhancements:
Cbor.Tag(intests/common/CborTests.cpp) that verifies an exception is thrown when attempting to decode a CBOR map with an odd number of elements, improving coverage for malformed input handling.