CommitWatch RSS
AI-generated analysisPublished automatically and not human-verified. Validated context appears in community notes below.
← Watch feed
Low 47 Bitcoin

fix(python): skip stale protocol v1 responses

TZ1edb54ac View source ↗
Public commit record

What the developer wrote

Authored by Roman Zeyde

57/100 · Thin
fix(python): skip stale protocol v1 responses
✓ 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 update fixes a bug in the Trezor Python library where reconnecting to a Trezor device could fail if an old, unread response was still waiting in the communication channel. The fix makes the library clear out up to 10 stale responses before it checks whether the device speaks the older protocol v1. A new test simulates a host disconnect mid-operation and verifies that a new client can reconnect successfully.

Recommended action

Treat as a reliability/robustness fix rather than a critical security vulnerability. Users of the `trezorlib` Python package should upgrade to the version containing this commit to avoid reconnect failures after interrupted sessions. No immediate device firmware update is indicated by this change.

Security signals we found

01

Communication desynchronization between host and device

02

Stale message buffer not cleared on reconnect

03

Protocol probing failure could block or confuse client initialization

04

Regression test added for host-disconnect/reconnect scenario

Risk score

Why this scored 47/100

Our methodology →
Potential impact 12/30
Exploitability 8/25
Stealth signal 6/15
Affected reach 10/15
Confidence 7/10
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.

More from Trezor firmware

Related watches

Informational 18 AI analysisMessage 57 · Thin
TZ TrezorTrezor firmware BitcoinHardware wallets

chore(core): remove sha1 from regular FW

This commit removes the SHA-1 hashing function from the regular Trezor firmware. SHA-1 is an old, weak hash algorithm that is no longer considered secure for sensitive uses. The change deletes the code that exposes SHA-1 to apps running on…

Removal of a deprecated cryptographic primitive (SHA-1) from the firmware API surfaceReduction of attack surface and prevention of future misuse of a collision-vulnerable hashNo direct vulnerability patch or memory-safety bug is present in the diff
16d15774by M1nd3r+0−2006 files
No security note in commit
Open full analysis →Source commit ↗
Low 27 AI analysisMessage 62 · Adequate
TZ TrezorTrezor firmware BitcoinHardware wallets

refactor(crypto): pass static public key to `noise_xxpsk3_*_init()`

This commit changes how a cryptographic library sets up secure connections. Previously, the code automatically calculated the public key from the private key. Now, the caller must provide the public key directly. This is a code-quality ref…

Cryptographic key handling changed: public key is now supplied rather than derivedPotential reduction of key-mismatch risk if caller provides correct public keyNew null-pointer check added for static_public_key
1b3128a4by Ondřej Vejpustek+20−92 files
No security note in commit
Open full analysis →Source commit ↗
Informational 15 AI analysisMessage 57 · Thin
TZ TrezorTrezor firmware BitcoinHardware wallets

refactor(crypto): change order of parameters

This commit simply reorders the arguments of an internal function called dh() and updates every place that calls it. The actual math and security behavior are unchanged; it is a code cleanup with no security effect.

33a119eeby Ondřej Vejpustek+15−151 file
No security note in commit
Open full analysis →Source commit ↗