v0.15.5 — validator crash fix (recommended upgrade)

[oskarszoon]

v0.15.5 — validator crash fix (recommended upgrade)

Released: 2026-07-15
GitHub: https://github.com/bsv-blockchain/teranode/releases/tag/v0.15.5
Container: ghcr.io/bsv-blockchain/teranode:v0.15.5

Upgrade priority

Recommended — fixes a reachable validator panic. If you're on v0.15.2, .3, or .4 you can be affected.

Symptom to watch for

A subtreevalidator service in crashloop. The trigger is any block containing a transaction that references a non-existent output index (vout) of a real parent transaction — e.g. a child spending vout 2 of a 2-output parent. On affected versions this panics with index out of range inside getUtxoBlockHeightAndExtendForParentTx and takes the process down.

What changed

• validator: bound PreviousTxOutIndex against len(txMeta.Tx.Outputs) before dereferencing (fix(validator): bound parent vout before extend deref (backport #1243 to release/v0.15) #1275, proper backport of fix(validator): correct off-by-one in parent-tx input bounds guard #1243)

The v0.15.4 backport of #1243 caught only the unreachable idx >= len(tx.Inputs) half of the fix. This release adds the reachable half.

Known issues

None.

Full changelog