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Low 35 Bitcoin

fix(core/eckhart): wrong return flow message

TZ86076fa4 View source ↗
Public commit record

What the developer wrote

Authored by Lukas Bielesch

57/100 · Thin
fix(core/eckhart): wrong return flow message

[no changelog]
✓ 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 commit fixes a UI flow bug in the Trezor hardware wallet (Eckhart/T3W1 layout). When a user was setting up a new PIN, opened the menu, chose 'Cancel PIN setup', and then confirmed the cancellation, the device accidentally reported 'success/confirmed' instead of 'cancelled'. This could mislead connected software into thinking the user had approved PIN setup when they actually aborted it.

Recommended action

Treat as a low-to-moderate UI/state-machine bug. Verify the fix in device tests and regression-test the PIN setup/cancellation flow on T3W1. No emergency response is indicated, but the fix should be included in the next firmware release.

Security signals we found

01

Incorrect UI flow return message could cause host software to misinterpret user cancellation as confirmation

02

PIN setup cancellation state machine bug in Rust UI flow controller

03

Test updated to exercise the real cancel path and assert cancellation is still reported

Risk score

Why this scored 35/100

Our methodology →
Potential impact 8/30
Exploitability 5/25
Stealth signal 6/15
Affected reach 5/15
Confidence 7/10
Evidence quality 4/5
Human-validated context

Community notes

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