- Fix integer overflow vulnerability on 32‑bit builds (CVE‑2021‑21309) and add ARM64 kernel bug check, raising security urgency for affected platforms.
- Resolve multiple stability issues: proto max bulk length overflow, parent pidfile deletion by forks, flock cluster restart failures, Sentinel out‑of‑bounds read, and setproctitle crashes on Apple M1 and instrumentation.
- Correct module bug (RM ZsetRem) that left empty sorted‑set keys.
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