9.0.6

Valkey 9.0.6 - Released Tue 01 September 2026

Upgrade urgency SECURITY: This release includes security fixes we recommend you apply as soon as possible.

Security Fixes

• GHSA-jcj7-v34w-v9vv: Fix a use-after-free in RDMA connection handling that could allow an authenticated client to crash the server using CLIENT KILL. Only affects servers built with USE_RDMA and configured with an RDMA listener (#4534)

Bug Fixes

• Fix crashes, assertion failures, and hangs when using RDMA together with IO threads by @quanyeyang (#3335)
• Fix a double free when a module timer callback stops its own timer with ValkeyModule_StopTimer by @quanyeyang (#4211)
• Fix torn RESP3 push frames when a client publishes a large message to a channel it is also subscribed to by @quanyeyang (#4253)
• RESET now clears CLIENT IMPORT-SOURCE state so reused pooled connections regain normal key expiration semantics by @tjade273 (#3973)
• Truncated AOF files now discard an incomplete MULTI block entirely, preventing loss of later writes after another restart by @chzhoo (#4342)
• Fix an ACL bypass in GEORADIUS and GEORADIUSBYMEMBER where duplicate STORE options checked only the first destination key by @tjade273 (#3971)
• Fix a use-after-free crash when a cluster message arrives for a message type registered by an unloaded module by @enjoy-binbin (#4360)
• Always deep-validate payloads on RDB load and RESTORE, preventing deferred assertion crashes; sanitize-dump-payload is now a deprecated no-op by @jjuleslasarte (#3721)
• Fix out-of-bounds memory access when registering or receiving cluster module messages of type 255, which is now a valid type by @enjoy-binbin (#4410)
• AOF loading no longer applies ACL checks, preventing silent data loss when replaying commands with a disabled default user by @lukepalmer (#3984)
• Fix a client memory accounting leak that inflated the mem_clients_normal INFO field on replicas after primary disconnects by @enjoy-binbin (#4395)
• Fix a permanent client hang when a blocking command such as BLPOP is pipelined with a partially received next command by @foobar (#4531)
• HGETEX now requires write permission on the key, so read-only ACL users can no longer change field TTLs or delete fields by @ranshid (#4576)
• Compare the full TLS certificate CN when authenticating, so an embedded NUL cannot impersonate a truncated ACL username by @madolson (#4577)
• Restore read performance with IO threads on TCP/TLS by applying extra read-completion handling only to RDMA connections by @quanyeyang (#4414)
• Restore write performance with IO threads on TCP/TLS by limiting post-write safety checks to RDMA connections by @quanyeyang (#4452)
• Fix atomic slot migration protocol errors with IO threads by not offloading export connection writes while snapshotting by @satheeshaGowda (#4104)
• Reject invalid slot import ranges when loading an RDB, preventing corrupted files from creating bad migration state by @enjoy-binbin (#4229)
• Reject RDB slot-import records with an invalid job name length, fixing an out-of-bounds read during startup by @quanyeyang (#4210)
• Fix a crash when COPY ends with a bare DB token during slot migration, and block cross-DB COPY regardless of option order by @madolson (#4301)
• HPERSIST, HTTL, HPTTL, HEXPIRETIME, and HPEXPIRETIME now return a syntax error when the FIELDS keyword is missing by @cjx-zar (#4300)
• Fix a TLS and IO threads race that could leave slot migration export jobs stuck until timeout by @jjuleslasarte (#4320)
• Fix a server crash when hash field expirations are set near the maximum timestamp, for example via HPEXPIREAT by @ranshid (#4312)
• Fix a stack overflow crash on TLS connections when retrying a failed write of large replies by @murphyjacob4 (#4307)
• Validate cluster bus PUBLISH and MODULE packet payload lengths, preventing a remote crash from forged length fields by @tjade273 (#3972)
• Fix a use-after-free crash when serving blocked clients if handling one client frees another blocked on the same key by @quanyeyang (#4212)
• Fix a server panic with IO threads when pipelined commands with a wrong number of arguments reached the key prefetcher by @madolson (#4302)
• Reject crafted stream RESTORE and RDB payloads with inconsistent lengths or negative field counts that could crash the server by @madolson (#3922)
• Reject stream payloads with mismatched live and deleted entry counts that could make XDEL destroy live entries by @roshkhatri (#4381)
• Fix CLUSTER SLOT-STATS ORDERBY returning wrong ordering once cumulative slot counters differ by more than 2^31 by @jzy1688 (#4459)
• Fix atomic slot migration failures with TLS and IO threads by not offloading export connection reads while snapshotting by @satheeshaGowda (#4559)

Full Changelog: 9.0.5...9.0.6