Red Hat Security Advisory: redis:6 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: 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.
AI Analysis
Technical Summary
This advisory covers four distinct vulnerabilities in Redis 6 related to its Lua scripting functionality: CVE-2025-46817 involves integer overflow in Lua library commands that could lead to remote code execution; CVE-2025-46818 allows authenticated users to execute Lua scripts as different users, effectively a privilege escalation; CVE-2025-46819 permits denial of service through specially crafted Lua scripts; and CVE-2025-49844 is a Lua use-after-free vulnerability that may result in remote code execution. Red Hat has released updated Redis 6 packages for Red Hat Enterprise Linux 8 to address these vulnerabilities. The advisory rates the overall security impact as Important (high severity).
Potential Impact
The vulnerabilities collectively allow for potential remote code execution, privilege escalation by authenticated users, and denial of service conditions in affected Redis 6 deployments on Red Hat Enterprise Linux 8. Exploitation could lead to unauthorized code execution or service disruption.
Mitigation Recommendations
Red Hat has released updated Redis 6 packages (version 6.2.20-1.module+el8.10.0+...) for Red Hat Enterprise Linux 8 that fix these vulnerabilities. Users should apply the security update as detailed in the Red Hat advisory RHSA-2025:19238 and the referenced article https://access.redhat.com/articles/11258. Since this is an official fix, applying the update is the recommended remediation. No additional mitigations are specified in the advisory.
Red Hat Security Advisory: redis:6 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: 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.
Affected software
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AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
This advisory covers four distinct vulnerabilities in Redis 6 related to its Lua scripting functionality: CVE-2025-46817 involves integer overflow in Lua library commands that could lead to remote code execution; CVE-2025-46818 allows authenticated users to execute Lua scripts as different users, effectively a privilege escalation; CVE-2025-46819 permits denial of service through specially crafted Lua scripts; and CVE-2025-49844 is a Lua use-after-free vulnerability that may result in remote code execution. Red Hat has released updated Redis 6 packages for Red Hat Enterprise Linux 8 to address these vulnerabilities. The advisory rates the overall security impact as Important (high severity).
Potential Impact
The vulnerabilities collectively allow for potential remote code execution, privilege escalation by authenticated users, and denial of service conditions in affected Redis 6 deployments on Red Hat Enterprise Linux 8. Exploitation could lead to unauthorized code execution or service disruption.
Mitigation Recommendations
Red Hat has released updated Redis 6 packages (version 6.2.20-1.module+el8.10.0+...) for Red Hat Enterprise Linux 8 that fix these vulnerabilities. Users should apply the security update as detailed in the Red Hat advisory RHSA-2025:19238 and the referenced article https://access.redhat.com/articles/11258. Since this is an official fix, applying the update is the recommended remediation. No additional mitigations are specified in the advisory.
Technical Details
- Gcve Source
- db.gcve.eu
- Csaf Category
- csaf_security_advisory
- Csaf Version
- 2.0
- Publisher
- Red Hat Product Security
- Advisory Id
- RHSA-2025:19238
- Cve Count
- 4
- Additional Cves
- ["CVE-2025-46818","CVE-2025-46819","CVE-2025-49844"]
Threat ID: 6a419caf27e9c79719abaa9e
Added to database: 06/28/2026, 22:14:07 UTC
Last enriched: 07/12/2026, 10:59:22 UTC
Last updated: 09/10/2026, 19:36:50 UTC
Views: 20
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