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Low 32 Bitcoin

multi: upgrade to btcd v2 modules

LL8047149c View source ↗
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What the developer wrote

Authored by Oli

88/100 · Strong
multi: upgrade to btcd v2 modules

Migrate all btcd dependencies to the new per-package v2 modules (wire/v2,
txscript/v2, chaincfg/v2, chainhash/v2, btcutil/v2, psbt/v2, btcec/v2)
introduced by btcd v0.26.0, and pin the tagged ecosystem versions:
btcwallet v0.17.0, neutrino v0.18.0 and lightning-onion v1.4.0.

The bulk of the import rewrite was produced by the scripted diff from
https://github.com/btcsuite/btcd/pull/2547 (followed by 'make rpc'). The
address symbols that moved out of btcutil into the new address package
are imported as btcaddr where a local "address" variable would otherwise
shadow them. The go.mod/go.sum updates and the remaining manual
compilation fixes are folded into this single commit so it builds on its
own (the migration was previously split into a reproducible scripted-diff
plus follow-ups, intended to be squashed on merge).
✓ Descriptive subject✓ Names a concrete action or component✓ Provides detailed explanatory context✓ Explains rationale or failure mode✓ Links an issue, advisory, or supporting reference
The short version

What changed, and why it matters

This is a large dependency upgrade for the LND Lightning node software. It moves LND from older btcd Bitcoin library packages to new 'v2' packages and updates related wallet and network libraries. The commit is almost entirely mechanical import-path changes and version bumps. It does not appear to fix a specific known security bug on its own, but it pulls in newer upstream versions that may contain security fixes. Because the change touches 605 files and many core Bitcoin-handling modules, any mistake in the migration could affect transaction parsing, address handling, or cryptographic operations, so it should be reviewed and tested carefully.

Recommended action

Treat this as a routine but high-touch dependency upgrade. Verify that the new btcd/btcwallet/neutrino versions do not introduce regressions in transaction/address/script handling. Run the full test suite and integration tests. Check upstream btcd/btcwallet release notes for any security advisories or breaking changes not covered by the import rewrites. No immediate emergency response is warranted based solely on this commit, but it should be included in the next release with normal validation.

Security signals we found

01

Large dependency upgrade touching core Bitcoin primitives (wire, txscript, chainhash, btcutil, psbt, address)

02

Migration to new v2 module layout with API changes in address handling

03

Pins new upstream releases (btcd 0.26.0, btcwallet 0.17.0, neutrino 0.18.0, lightning-onion 1.4.0) that may include undisclosed fixes

04

No explicit security fix or CVE mentioned in commit message

05

No direct vulnerability evidence in the diff; changes are import-path and type-name adaptations

Risk score

Why this scored 32/100

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

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