AI-generated analysisPublished automatically and not human-verified. Validated context appears in community notes below.
← Watch feed
High 80 Bitcoin

fix: regular AI review and fix

Public commit record

What the developer wrote

Authored by soralit

57/100 · Thin
fix: regular AI review and 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 fixes several security and safety issues found during an internal AI-assisted review. The most important changes are: (1) Zcash wallet data was being encrypted with a key derived from the user's login password and a fixed, predictable IV; it is now encrypted with a key derived directly from the wallet seed and a fresh random IV. (2) Solana transactions that had hidden extra bytes after the real transaction data are now rejected instead of being accepted. (3) Solana mixed transactions (for example a Jupiter swap bundled with a token-account-close instruction) now show all instructions, not just the main one, so a malicious companion instruction cannot hide from the user. (4) Ethereum legacy transactions that do not use EIP-155 replay protection now show a warning on the device screen. (5) Tron transactions no longer trust token-name/decimal overrides sent by the host app, and they now reject multi-contract or unknown-contract transactions instead of silently ignoring parts of what is being signed. There are also many UI-only improvements for Cosmos, Ethereum and Solana message display.

Recommended action

Treat this commit as a security patch and include it in the next firmware release. Validate that the new Zcash blob migration path does not lock out users with legacy blobs by testing login after upgrade. Confirm Solana mixed-transaction test vectors now show all instructions. Confirm Ethereum legacy transactions without EIP-155 display the new warning. Confirm Tron transactions with host-supplied override metadata now display raw/allowlist values. No CVE or advisory is supplied; consider requesting a security advisory from the vendor if the password-derived Zcash keying or Solana trailing-bytes issues are believed to affect shipped firmware.

Security signals we found

01

Zcash UFVK encryption key changed from sha256(login password) to seed-derived BIP32 key

02

Zcash UFVK IV changed from deterministic seed-derived value to fresh TRNG-generated IV per encryption

03

New 'z2' UFVK blob format stores IV with ciphertext; legacy blobs rejected/migrated

04

Solana malformed-transaction / trailing-bytes payloads now rejected at check and parse entry points

05

Solana mixed transactions now expose sibling instructions via additional_overviews to prevent hidden actions

06

Ethereum legacy transactions now display replay_protected status and warn when EIP-155 protection is absent

07

Tron no longer trusts host-provided token decimal/symbol overrides; uses device allowlist or raw units

08

Tron now rejects raw transactions with multiple contracts or unsupported contract types

09

Tron adds handling and display for TRC-20 Approve and generic contract calls

Risk score

Why this scored 80/100

Our methodology →
Potential impact 24/30
Exploitability 18/25
Stealth signal 12/15
Affected reach 14/15
Confidence 8/10
Evidence quality 4/5
Human-validated context

Community notes

Notes can correct, qualify, or add evidence to the AI analysis. Every note shown here has been validated by a human moderator.

No validated notes yet.

The AI analysis stands alone for now. Submit a note if you can add evidence or important context.