# NousResearch/hermes-agent · Guard against NUL bytes in terminal/lifecycle code

## Open now

- Nothing open on GitHub.

These members address crashes or errors caused by embedded NUL bytes appearing in command tokens, affecting lifecycle guard and terminal script scanning paths. Fixes are applied to prevent unhandled exceptions in both areas.

## TL;DR

- 4 member(s): 0 open issue(s), 1 closed issue(s), 0 open PR(s), 1 merged PR(s), 2 PR(s) closed without merging.
- A fix was merged to main in PR #80258. Verify it addresses your case.
- **Recommended:** read PR #80258 (and any competing PRs below) before filing. Confirm the merged change covers your symptom.

## Maintainer resolution verdict

- Internal-tracker verdict over this cluster's issue members: `unresolved`. This is distinct from the fix status above. Weigh it yourself.

## How this cluster was grouped

- Link evidence (`STRUCTURAL_SPANNING`): every member is connected by structural evidence: shared changed files, or a closing/superseded reference.
- Pairwise link density `0.50`: the share of member pairs that carry a link, counting a structural link in full and a relevance-only link at 0.36. `1.00` means every pair is linked.

## Closed / duplicate issues

- #77988: lifecycle_guard: unhandled ValueError ("embedded null byte") crashes every terminal-tool call once a NUL byte appears in a command token

## Prior & competing PRs

- **#80258: fix(cron): make the lifecycle guard total — sanitize at ingestion, not per-syscall**. merged to main · fix tier `verified`
  - maintainer direction: category `merged`
  - files: `cron/lifecycle_guard.py`, `cron/scheduler.py`, `tests/cron/test_cron_no_agent.py`, `tests/hermes_cli/test_gateway_restart_loop.py`, `tools/terminal_tool.py`
- **#78013: fix(cron): handle embedded null byte in lifecycle guard command tokens (#77988)**. closed without merge
  - maintainer direction: category `superseded_by_pr`; implication `superseded`; refs `#80258`, `#76762`, `#77703`, `#77780`, `#78256`
- **#79390: fix(terminal): guard against NUL bytes in referenced script scanning**. closed without merge
  - maintainer direction: category `superseded_by_pr`; implication `superseded`; refs `#80258`, `#76762`, `#77703`, `#77780`, `#78256`

## Fix status

- Merged to main in PR #80258 (cited above). No release data is tracked. Verify downstream.
- Fix last verified (merged) `2026-08-06`.