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Moderate 61 Bitcoin

fix: regular ai review fix

Public commit record

What the developer wrote

Authored by soralit

57/100 · Thin
fix: regular ai review fix
✓ Descriptive subject✓ Names a concrete action or component✓ Uses a recognizable type or scope! No meaningful explanatory body
The short version

What changed, and why it matters

This firmware update for the Keystone 3 hardware wallet fixes several security and safety issues found during an internal AI-assisted review. The most important changes are: (1) the signing slider is now disabled until a transaction is fully parsed, so a malformed transaction cannot be accidentally approved; (2) Arweave data-item transactions are checked for tampered tag counts before they reach the confirmation screen; (3) Avalanche transactions are fully re-parsed during the safety check so a modified transaction is rejected; (4) Bitcoin-like fee warnings now use network-specific thresholds, so Dogecoin/Litecoin users are not falsely warned or misled by Bitcoin defaults; and (5) Cosmos no longer shows a duplicated/confusing 'Max Fee' field, and Solana Squads multi-sig memos are attached to the correct instruction. Most other changes are UI clean-up.

Recommended action

Treat this commit as a security-hardening patch. Review the new pre-check logic for Arweave and Avalanche with targeted fuzzing, verify that the disabled signing slider cannot be bypassed through refresh or password-success paths, and confirm the new LargeFeePolicy thresholds match each network's documented conventional fee ranges. Because the patch is large and spans many chains, regression-test transaction parsing and UI rendering for all affected cryptocurrencies before release.

Security signals we found

01

Signing slider disabled until parse success prevents approval of malformed transactions

02

Arweave DataItem tag-count mismatch rejected in pre-check before confirmation page

03

Avalanche transaction re-validated by type during fingerprint check

04

Bitcoin-family large-fee policy made network-specific (BTC/LTC/DOGE/DASH/BCH/Zcash)

05

Cosmos duplicate Max Fee field removed to avoid misleading fee display

06

Solana Squads memo correctly attributed to VaultTransactionCreate instead of ProposalCreate

Risk score

Why this scored 61/100

Our methodology →
Potential impact 18/30
Exploitability 12/25
Stealth signal 8/15
Affected reach 12/15
Confidence 7/10
Evidence quality 4/5
Human-validated context

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