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Informational 22 Bitcoin

feat(proto): debuglink set battery state

Public commit record

What the developer wrote

Authored by obrusvit

57/100 · Thin
feat(proto): debuglink set battery state

[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 adds a new debug-only protocol message called DebugLinkSetBatteryState. It lets developers or test tools tell the Trezor emulator (a software version of the device used for testing) what battery and charging state to simulate. The change only touches protocol definitions and generated code; it does not add any logic that runs on a real device or handles secrets. It is marked for debug use only and is skipped in the legacy firmware build.

Recommended action

No immediate action required. If reviewing the broader feature, verify that the corresponding emulator/debug handler enforces debug-link access controls and rejects this message on production builds. Confirm the message is not reachable on real hardware firmware.

Security signals we found

01

New debug-only wire message (wire_debug_in, MessageType 9018)

02

Message explicitly skipped in legacy/firmware/protob/Makefile

03

Core enum definition is inside `if __debug__:` block

04

No handler/implementation code for the message is included in the diff

05

Fields are simple optional booleans and a uint32; no buffers, pointers, or secrets

Risk score

Why this scored 22/100

Our methodology →
Potential impact 2/30
Exploitability 2/25
Stealth signal 3/15
Affected reach 3/15
Confidence 8/10
Evidence quality 4/5
Human-validated context

Community notes

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