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High 76 Bitcoin

docs(core): changelog for 2.9.7

TZ7b5acc88 View source ↗
Public commit record

What the developer wrote

Authored by obrusvit

72/100 · Adequate
docs(core): changelog for 2.9.7

[no changelog]

(cherry picked from commit 578c30a7e38b60a5e440ec864375c0ac10322fa7)
✓ Descriptive subject✓ Names a concrete action or component✓ Uses a recognizable type or scope✓ Provides an explanatory body
The short version

What changed, and why it matters

This commit is a documentation-only changelog update for Trezor firmware version 2.9.7. It lists several changes, most notably a security fix for a 'side-channel vulnerability in BIP-39 mnemonic processing.' A side-channel attack is a technique where an attacker infers secret information (like a recovery seed) by observing physical signals such as power consumption, timing, or electromagnetic emissions during cryptographic operations. Because this commit only updates changelogs and does not include the actual code fix, we cannot independently verify the vulnerability's severity or exploitation details from the diff alone. The vendor explicitly labels it as a security issue.

Recommended action

Treat firmware 2.9.7 as a security update and encourage users to upgrade once released. For a full assessment, review the actual code changes that fixed the BIP-39 side-channel vulnerability (likely associated with issue/PR #200 or the deleted core/.changelog.d/200.security fragment). Monitor Trezor's security advisories and release notes for additional technical disclosure or CVE assignment.

Security signals we found

01

Vendor-authored changelog entry explicitly classifies a fix as 'Security' and describes it as a side-channel vulnerability in BIP-39 mnemonic processing.

02

BIP-39 mnemonic processing is a high-value target because it directly protects the wallet seed/recovery phrase.

03

Side-channel vulnerabilities in seed handling can potentially allow physical attackers to recover secrets, but no details on the specific leak (timing, power, EM, fault) are provided.

04

The actual code change is not in this commit; only the release notes are updated.

Risk score

Why this scored 76/100

Our methodology →
Potential impact 25/30
Exploitability 15/25
Stealth signal 12/15
Affected reach 14/15
Confidence 7/10
Evidence quality 3/5
Human-validated context

Community notes

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

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