eip7732: fix zero-amount builder withdrawals#4651
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jtraglia merged 1 commit intoethereum:masterfrom Oct 13, 2025
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Prevent creating withdrawals with zero amount by adding a guard before appending builder withdrawals, ensuring compliance with EIP-4895.
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terencechain
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Oct 13, 2025
jtraglia
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LGTM as well, thanks @nerolation!
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This update fixes an issue where builder withdrawals with a zero amount could be created, violating EIP-4895’s requirement that all withdrawals must have non-zero amounts. The change adds a guard to ensure builder withdrawals are only appended when the
withdrawable_balanceis greater than zero, aligning their behavior with standard validator withdrawals.The problem occurred when a builder’s balance dropped to or below the
MIN_ACTIVATION_BALANCEbetween bid creation and withdrawal processing, resulting in a zero-amount withdrawal being included in the execution payload. With this fix, such withdrawals are now excluded.