# Withdrawals can fail due to deposits reverting in completeQueuedWithdrawal()

Renzo's completeQueuedWithdrawal and deposit revert when excess tokens redeposited into EigenLayer strategies mint 0 shares or hit deposit limits, blocking withdrawals.

- Payout: Contest reward
- Severity: medium
- Program: Renzo
- Credited: LessDupes
- Disclosed: 2024-06-07
- Write-up quality: 6/10
- Original: https://github.com/code-423n4/2024-04-renzo-findings/issues/604
- Library page: https://bugbountylibrary.com/r/c4%3A2024-04-renzo%3AM-01
- Tags: domain:web3 impact:dos kind:contest platform:code4rena sev:medium tech:evm tech:solidity technique:chained technique:source-review vuln:dos

**Target:** OperatorDelegator.completeQueuedWithdrawal / RestakeManager.deposit (EigenLayer strategy deposits)
**Root cause:** Excess withdrawn tokens are redeposited via strategyManager.depositIntoStrategy(), which reverts if the strategy mints 0 shares (sub-1:1 ratio, e.g. 1 wei) or if per-tx/total deposit limits are reached, reverting the whole withdrawal/deposit transaction.
**Steps:**
1. Queue withdrawal of 10 ETH, 10 stETH, 10 wBETH via nativeEthRestakeAdmin.
2. After delay, call completeQueuedWithdrawal(); ETH forwarded, 9 stETH fill WithdrawQueue buffer.
3. Remaining 1 stETH is deposited back via `strategyManager.depositIntoStrategy()`.
4. stETH strategy total deposit limit reached -> deposit reverts -> entire completeQueuedWithdrawal reverts.
5. Alternatively deposit 1 wBETH via RestakeManager.deposit(); buffer consumes all but 1 wei; 1 wei mints 0 shares; StrategyManager requires shares > 0 -> revert.
**How found:** Code-reading of completeQueuedWithdrawal's redeposit path and cross-referencing EigenLayer StrategyManager's shares>0 check and StrategyBaseTVLLimits deposit caps to identify revert conditions.
**Insight:** When a protocol redeposits leftover tokens into an external vault/strategy, check the external contract's minimum-share and deposit-cap reverts: any revert in the redeposit path bricks the whole withdrawal/deposit flow, especially for dust amounts (1 wei) or capped strategies.