myxce/.wolf/bugs/bug-1868.md
Rongsong Shen d26ff8870d
feat(buglog): one Markdown record per bug, checked against a record standard
The buglog was one 27K-line JSON file whose fields covered only symptom,
root cause and fix, as free text: 2% of entries named the code version a
bug was found on, 12% the build profile, 36% a way to reproduce, and 58% of
the file was OpenWolf hook auto-detections ("Missing guard clause",
"Function not marked async" on .md files).

- .claude/skills/buglog/bug-record.md: the record standard. Eight
  sections (Summary as the title, Description, Environment, Reproduction;
  Root cause, Fix, Verification, References once fixed), each with the
  content it must contain -- e.g. Environment needs the OS, the libc the
  failing binary loads (from its ELF interpreter: glibc 2.42 in the nix
  shell vs 2.40 on the host), toolchain, build profile and commit.
- .wolf/bugs/<id>.md: 500 records migrated from buglog.json; every field
  verified to round-trip. They carry legacy: true and an explicit "not
  recorded" where the old log had no such field; component derived from
  file paths, severity from keywords (else unknown), fix_commits from
  hashes in status_note/fix that git resolves (91 of 463 fixed).
- .wolf/buglog-archive.json: the 710 hook auto-detections, verbatim.
- .wolf/buglog.json is now an index generated from the records, keeping
  the fields OpenWolf's hooks and `openwolf bug search` read.
- scripts/buglog.py rewritten: new (template + Environment collected from
  the machine and --binary), check, status (refuses a status the record
  doesn't support; fixed needs Root cause, Fix, Verification and
  --commit hashes git resolves), note, recur, set, show, list, triage,
  env, index. 29 unittest cases in scripts/tests/test_buglog.py.
- scripts/git-hooks/pre-commit runs `check --staged`: incomplete staged
  records, a legacy record hand-changed to fixed without the fix-time
  sections, a new record claiming legacy: true, or a stale index refuse
  the commit.
- scripts/gitea-sync.py reads the records: issue body = the record's
  sections plus linked fix commits (origin remote, GITEA_COMMIT_REPO to
  override), and a body hash so an issue's text is refreshed when the
  record changes.
- bug-1866 rewritten to the full standard as the worked example.

Co-Authored-By: Claude Opus 5.5 (1M context) <noreply@anthropic.com>
2026-09-28 03:40:11 +00:00

1.4 KiB

id status status_updated status_note component severity timestamp last_seen occurrences files tags related fix_commits legacy gitea_issue gitea_synced_status
bug-1868 fixed 2026-09-26 7864a3da: xcecd_create_job_output() unlinks then creates with O_EXCL|O_NOFOLLOW|O_CLOEXEC. worker security 2026-09-26T07:40:17Z 2026-09-26T07:40:17Z 1
src/worker/src/uv_proc.c
security
worker
symlink
tmp
uv_proc
bug-1508
7864a3da
true 288 fixed

bug-1868: uv_proc_exec (worker/src/uv_proc.c) creates each task's output file /tmp/job__task.out…

Description

uv_proc_exec (worker/src/uv_proc.c) creates each task's output file /tmp/job__task.out as root with O_WRONLY|O_CREAT|O_TRUNC and no O_NOFOLLOW/O_EXCL: a local user who pre-plants a symlink at a predictable future job's output name makes the root worker truncate and write job output into the symlink target

Environment

Not recorded (migrated from buglog.json).

Reproduction

Not recorded (migrated from buglog.json).

Root cause

Predictable name in world-writable /tmp opened by root following symlinks. Only mitigated by the host's fs.protected_symlinks / fs.protected_regular sysctls, not by the code. Sibling of bug-1508 (read side, fixed in 7723a4f4).

Fix

Not recorded (migrated from buglog.json).

Verification

Not recorded (migrated from buglog.json).

References

  • Related: bug-1508
  • Gitea: #288