Summary
Valkey is an advanced key-value store. It is often referred to as a data structure server since keys can contain strings, hashes, lists, sets and sorted sets. You can run atomic operations on these types, like appending to a string; incrementing the value in a hash; pushing to a list; computing set intersection, union and difference; or getting the member with highest ranking in a sorted set. In order to achieve its outstanding performance, Valkey works with an in-memory dataset. Depending on your use case, you can persist it either by dumping the dataset to disk every once in a while, or by appending each command to a log. Valkey also supports trivial-to-setup master-slave replication, with very fast non-blocking first synchronization, auto-reconnection on net split and so forth. Other features include Transactions, Pub/Sub, Lua scripting, Keys with a limited time-to-live, and configuration settings to make Valkey behave like a cache. You can use Valkey from most programming languages also.
Security Fix(es):
* redis: Lua library commands may lead to integer overflow and potential RCE (CVE-2025-46817)
* Redis: Redis: Authenticated users can execute LUA scripts as a different user (CVE-2025-46818)
* Redis: Redis is vulnerable to DoS via specially crafted LUA scripts (CVE-2025-46819)
* Redis: Redis Lua Use-After-Free may lead to remote code execution (CVE-2025-49844)
For more details about the security issue(s), including the impact, a CVSS score, acknowledgments, and other related information, refer to the CVE page(s) listed in the References section.
Fixed packages 2
| Release | Package | Fixed in |
|---|---|---|
| AlmaLinux · 10 | valkey | 8.0.6-2.el10_1 |
| AlmaLinux · 10 | valkey-devel | 8.0.6-2.el10_1 |
Vulnerabilities 4
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Critical 10.0
Redis Lua Use-After-Free may lead to remote code execution
Redis is an open source, in-memory database that persists on disk. Versions 8.2.1 and below allow an authenticated user to use a specially crafted Lua script to manipulate the garbage collector, trigger a use-after-free and potentially lead to remote code exe…
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High 7.0
Lua library commands may lead to integer overflow and potential RCE
Redis is an open source, in-memory database that persists on disk. Versions 8.2.1 and below allow an authenticated user to use a specially crafted Lua script to cause an integer overflow and potentially lead to remote code execution The problem exists in all …
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Medium 6.3
Redis is vulnerable to DoS via specially crafted LUA scripts
Redis is an open source, in-memory database that persists on disk. Versions 8.2.1 and below allow an authenticated user to use a specially crafted LUA script to read out-of-bound data or crash the server and subsequent denial of service. The problem exists in…
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Medium 6.0
Redis: Authenticated users can execute LUA scripts as a different user
Redis is an open source, in-memory database that persists on disk. Versions 8.2.1 and below allow an authenticated user to use a specially crafted Lua script to manipulate different LUA objects and potentially run their own code in the context of another user…
References
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report
https://access.redhat.com/security/cve/CVE-2025-46817
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report
https://access.redhat.com/security/cve/CVE-2025-46818
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report
https://access.redhat.com/security/cve/CVE-2025-46819
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report
https://access.redhat.com/security/cve/CVE-2025-49844
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report
https://bugzilla.redhat.com/2401258
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report
https://bugzilla.redhat.com/2401292
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report
https://bugzilla.redhat.com/2401322
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report
https://bugzilla.redhat.com/2401324
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advisory
https://errata.almalinux.org/10/ALSA-2025-21936.html