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8.4.3 source code.tar.gz 2026-05-05 4.2 MB
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Update urgency: SECURITY: There are security fixes in the release.

Security fixes

  • (CVE-2026-23479) Use-After-Free in unblock client flow may lead to Remote Code Execution.
  • (CVE-2026-25243) Invalid memory access in RESTORE may lead to Remote Code Execution
  • (CVE-2026-23631) Lua Use-After-Free may lead to remote code execution
  • (CVE-2026-25588) Invalid memory access in RESTORE may lead to Remote Code Execution (Time Series)
  • (CVE-2026-25589) Invalid memory access in RESTORE may lead to Remote Code Execution (Probabilistic)

Bug fixes

  • SUBSCRIBE, PSUBSCRIBE, SSUBSCRIBE: crash on OOM (RED-167788)
  • CONFIG SET: some settings allow invalid characters (RED-167787)
  • SCRIPT DEBUG: potential crash on scripts (RED-175507)
  • VADD: crash or buffer overflow on large REDUCE value (RED-170921)
  • VSET: crash on huge allocations (MOD-12678)
  • Potential crash on disconnections and TLS failures (Time Series) (MOD-14850)
  • RediSearch/RediSearch#8744 Crash when many keys receive expirations under heavy TTL activity (MOD-14500)
  • RediSearch/RediSearch#8849 HNSW vector index memory growth under high-churn workloads until shard restart (MOD-13761)
  • RediSearch/RediSearch#8258 FT.HYBRID VSIM RANGE + FILTER incorrectly returns zero results (MOD-13885)
  • RediSearch/RediSearch#9183 FT.PROFILE HYBRID returns an empty reply (MOD-14778)
  • RediSearch/RediSearch#9048 FT.PROFILE output is inconsistent when a profiled value is missing (MOD-10560)
  • RediSearch/RediSearch#8792 FT.EXPLAIN does not lock, causing a race with concurrent index changes (MOD-14461)
  • RediSearch/RediSearch#8384 Crash when indexing negative zero (-0.0) (MOD-13904)
  • RediSearch/RediSearch#8596 FILTER returns inconsistent results with multiple indexes sharing field aliases (MOD-14063)
  • RediSearch/RediSearch#8661 FILTER behavior depends on property order in the expression (MOD-14065)
  • RediSearch/RediSearch#8598 Filter expressions are evaluated for indexes that do not match the document type (MOD-14064)
  • RediSearch/RediSearch#8597 Documents are inconsistently included or excluded depending on the indexing path taken (MOD-13948)
  • RediSearch/RediSearch#8595 RENAME notification handler loads the wrong key, causing stale index entries after a rename (MOD-14062)
  • RediSearch/RediSearch#9011 PERSIST and HPERSIST notifications are not reflected in index expiration tracking (MOD-14800)
  • RediSearch/RediSearch#9080 FT.SPELLCHECK treats PARAMS placeholders as literal terms instead of resolving them (MOD-10596)
  • RediSearch/RediSearch#8461 GC out-of-memory on replica shards leaves the replica in an inconsistent state (MOD-14066)
  • RediSearch/RediSearch#9091 Race condition in FT.HYBRID causes intermittent failures under concurrent hybrid query load (MOD-14732)
  • RediSearch/RediSearch#9161 Coordinator deadlock under mixed FT.SEARCH and FT.AGGREGATE load (MOD-14268)
  • RediSearch/RediSearch#9165 Crash on FT.SEARCH when topology validation fails (for example, some nodes unreachable) (MOD-14475)
  • RediSearch/RediSearch#8394 FT.SEARCH fails with "Query requires unavailable slots" after shard restart or failover (MOD-13828)
  • RediSearch/RediSearch#8452 FT.INFO-style output no longer reports zero-index summary data when no indices exist (MOD-14080)
  • RediSearch/RediSearch#9077 FT.CREATE now rejects schema definitions with invalid option combinations at creation time (MOD-14655)

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Source: README.md, updated 2026-05-05