psbt: Add bounds check for non-witness UTXO output index#5617
Merged
apoelstra merged 1 commit intorust-bitcoin:masterfrom Feb 17, 2026
Merged
psbt: Add bounds check for non-witness UTXO output index#5617apoelstra merged 1 commit intorust-bitcoin:masterfrom
apoelstra merged 1 commit intorust-bitcoin:masterfrom
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Add validation to ensure the vout specified in a transaction input does not exceed the number of outputs in the non-witness UTXO. This aligns with Bitcoin Core's PSBT deserialization behavior, which rejects PSBTs where the input references a non-existent output index. The new NonWitnessUtxoOutOfBounds error provides detailed context including the input index, the referenced vout, and the actual number of outputs available in the non-witness UTXO. Found by differential fuzzing using bitcoinfuzz.
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Thanks @erickcestari nice find! |
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Add validation to ensure the vout specified in a transaction input does not exceed the number of outputs in the non-witness UTXO. This aligns with Bitcoin Core's PSBT deserialization behavior, which rejects PSBTs where the input references a non-existent output index.
The new
NonWitnessUtxoOutOfBoundserror provides detailed context including the input index, the referenced vout, and the actual number of outputs available in the non-witness UTXO.Found by differential fuzzing using bitcoinfuzz.