feat: guard BoundedVec oracle returns against dirty trailing storage#21589
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…ng storage Add `assert_bounded_vec_trimmed` utility that asserts elements past `len()` are zeroed, and apply it to `aes128_decrypt` and `get_notes` oracle wrappers. This prevents malformed BoundedVec values from propagating through unconstrained code. Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>
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✅ Successfully backported to backport-to-v4-next-staging #21654. |
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BEGIN_COMMIT_OVERRIDE feat: entrypoint replay protection (#21649) feat: guard BoundedVec oracle returns against dirty trailing storage (#21589) feat: implement manual Packable for structs with sub-Field members (#21576) fix: off-by-1 in getBlockHashMembershipWitness archive snapshot (#21648) END_COMMIT_OVERRIDE
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Since it will take a while for Noir to check that there are no dirty trailing elements after bvec.len() in the BVec storage array I am implementing a manual unconstrained check for this.
Summary
assert_bounded_vec_trimmedunconstrained utility inaztec-nrthat asserts all elements pastlen()in aBoundedVecare zeroedaes128_decryptandget_notesoracle calls with this guardFixes https://linear.app/aztec-labs/issue/F-455/guard-boundedvec-oracle-returns-against-dirty-trailing-storage
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