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Moderate 63 Bitcoin

Merge pull request #2264 from KeystoneHQ/regular-review-fix

Public commit record

What the developer wrote

Authored by Soralit

58/100 · Thin
Merge pull request #2264 from KeystoneHQ/regular-review-fix

fix: regular ai review fix
✓ Specific, descriptive subject✓ Names a concrete action or component✓ Links an issue, advisory, or supporting reference! No meaningful explanatory body
The short version

What changed, and why it matters

This firmware update is a routine 'regular review fix' that hardens how the Keystone 3 hardware wallet checks and displays several cryptocurrency transactions before signing. The most important security changes are: (1) the sign button is now disabled until transaction parsing succeeds, so a malformed transaction cannot be accidentally approved; (2) Arweave/AO data-item transactions are rejected during the pre-check if their tag metadata is malformed; (3) Avalanche transactions are fully re-parsed in the pre-check, so tampered fields such as a changed output asset ID are caught; (4) Bitcoin-like fee warnings now use network-specific thresholds, so normal Dogecoin/Litecoin fees no longer trigger misleading 'large fee' alerts; and (5) Cosmos no longer shows a duplicated 'Max Fee' line, and Solana Squads proposal memos are displayed on the correct instruction. Most other changes are UI layout and cleanup.

Recommended action

Treat as a security-hardening patch and include in the next firmware release. Regression-test: (a) malformed Arweave DataItem and Avalanche transactions are blocked before the confirmation screen, (b) the sign slider cannot be triggered during/after parse failure, (c) Dogecoin/Litecoin transactions with typical fees do not show large-fee warnings, (d) Cosmos transactions display only one fee line, and (e) Solana Squads proposal overviews still show the intended memo. No CVE or advisory is referenced; consider requesting a security note from the vendor if one is desired.

Security signals we found

01

Sign slider disabled until parse success prevents premature approval

02

Arweave DataItem tag-count mismatch now rejected in pre-check

03

Avalanche transaction re-validated by type in pre-check, tampered asset ID rejected

04

Bitcoin-family large-fee thresholds made network-specific, reducing warning fatigue and alert bypass risk

05

Cosmos duplicate Max Fee field removed from data model and UI

06

Solana Squads memo attribution moved from ProposalCreate to VaultTransactionCreate

07

Parse-failure path now sets g_needSign=false and keeps slider disabled

Risk score

Why this scored 63/100

Our methodology →
Potential impact 18/30
Exploitability 12/25
Stealth signal 8/15
Affected reach 14/15
Confidence 7/10
Evidence quality 4/5
Human-validated context

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