Red Hat Security Advisory: valkey security update
Redis 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. For performance, Redis works with an in-memory data set. You can persist it either by dumping the data set to disk every once in a while, or by appending each command to a log. Security Fix(es): * redis: Lua library commands may lead to integer overflow and potential RCE (CVE-2025-46817) * 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.
AI Analysis
Technical Summary
The advisory covers security fixes for Redis 6 in Red Hat Enterprise Linux 8.4, specifically addressing CVE-2025-46817 and CVE-2025-49844. CVE-2025-46817 involves Lua library commands that may cause integer overflow potentially leading to remote code execution. CVE-2025-49844 is a use-after-free vulnerability in Redis Lua that may also result in remote code execution. Red Hat has issued updated redis:6 packages (version 6.0.9-5.module+el8.4.0+23585+fb4eb024.5) to resolve these issues. The advisory references Red Hat's errata RHSA-2025:19318 and provides links for applying the update.
Potential Impact
Successful exploitation of these vulnerabilities could allow an attacker to execute arbitrary code remotely on affected systems running vulnerable Redis 6 versions. This could lead to full system compromise or unauthorized control of Redis instances. The advisory rates the security impact as Important, indicating a high risk to affected systems if unpatched.
Mitigation Recommendations
Red Hat has released updated redis:6 packages for Red Hat Enterprise Linux 8.4 that fix these vulnerabilities. Users should apply the security update as described in Red Hat's advisory RHSA-2025:19318 and the referenced article https://access.redhat.com/articles/11258. Since this is an official fix, applying the update fully mitigates the vulnerabilities. No additional mitigation steps are specified or required beyond applying the update.
Red Hat Security Advisory: valkey security update
Description
Redis 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. For performance, Redis works with an in-memory data set. You can persist it either by dumping the data set to disk every once in a while, or by appending each command to a log. Security Fix(es): * redis: Lua library commands may lead to integer overflow and potential RCE (CVE-2025-46817) * 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.
Affected software
Run on your own infrastructure? Check whether these packages are installed with threat-finder — our free open-source scanner.
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
The advisory covers security fixes for Redis 6 in Red Hat Enterprise Linux 8.4, specifically addressing CVE-2025-46817 and CVE-2025-49844. CVE-2025-46817 involves Lua library commands that may cause integer overflow potentially leading to remote code execution. CVE-2025-49844 is a use-after-free vulnerability in Redis Lua that may also result in remote code execution. Red Hat has issued updated redis:6 packages (version 6.0.9-5.module+el8.4.0+23585+fb4eb024.5) to resolve these issues. The advisory references Red Hat's errata RHSA-2025:19318 and provides links for applying the update.
Potential Impact
Successful exploitation of these vulnerabilities could allow an attacker to execute arbitrary code remotely on affected systems running vulnerable Redis 6 versions. This could lead to full system compromise or unauthorized control of Redis instances. The advisory rates the security impact as Important, indicating a high risk to affected systems if unpatched.
Mitigation Recommendations
Red Hat has released updated redis:6 packages for Red Hat Enterprise Linux 8.4 that fix these vulnerabilities. Users should apply the security update as described in Red Hat's advisory RHSA-2025:19318 and the referenced article https://access.redhat.com/articles/11258. Since this is an official fix, applying the update fully mitigates the vulnerabilities. No additional mitigation steps are specified or required beyond applying the update.
Technical Details
- Gcve Source
- db.gcve.eu
- Csaf Category
- csaf_security_advisory
- Csaf Version
- 2.0
- Publisher
- Red Hat Product Security
- Advisory Id
- RHSA-2025:21936
- Cve Count
- 4
- Additional Cves
- ["CVE-2025-46818","CVE-2025-46819","CVE-2025-49844"]
Threat ID: 6a419caa27e9c79719ab8958
Added to database: 06/28/2026, 22:14:02 UTC
Last enriched: 07/12/2026, 10:59:08 UTC
Last updated: 09/10/2026, 19:36:50 UTC
Views: 22
Community Reviews
0 reviewsCrowdsource mitigation strategies, share intel context, and vote on the most helpful responses. Sign in to add your voice and help keep defenders ahead.
Want to contribute mitigation steps or threat intel context? Sign in or create an account to join the community discussion.
Actions
Updates to AI analysis require Pro Console access. Upgrade inside Console → Billing.
Need more coverage?
Upgrade to Pro Console for AI refresh and higher limits.
For incident response and remediation, OffSeq services can help resolve threats faster.
Latest Threats
Check if your credentials are on the dark web
Instant breach scanning across billions of leaked records. Free tier available.