Red Hat Security Advisory: redis 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 related to its LUA scripting capabilities: CVE-2025-46817 involves integer overflow in LUA library commands potentially leading to remote code execution; CVE-2025-46818 allows authenticated users to execute LUA scripts as a different user; CVE-2025-46819 enables denial of service via specially crafted LUA scripts; and CVE-2025-49844 describes a LUA use-after-free vulnerability that may lead to remote code execution. These vulnerabilities affect Redis versions distributed with Red Hat Enterprise Linux 9 and its extended update support variants. Red Hat has released updated Redis packages to remediate these issues.
Potential Impact
The vulnerabilities collectively allow for potential remote code execution, privilege escalation through LUA script execution as different users, and denial of service conditions. Exploitation could compromise system integrity and availability on affected Red Hat Enterprise Linux 9 systems running vulnerable Redis versions.
Mitigation Recommendations
Red Hat has released updated Redis packages (version 6.2.20-1.el9_6 and related) that address these vulnerabilities. Users of affected Red Hat Enterprise Linux 9 variants should apply these security updates promptly following Red Hat's published guidance at https://access.redhat.com/articles/11258. No additional mitigation steps are indicated beyond applying the official patches.
Red Hat Security Advisory: redis 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 related to its LUA scripting capabilities: CVE-2025-46817 involves integer overflow in LUA library commands potentially leading to remote code execution; CVE-2025-46818 allows authenticated users to execute LUA scripts as a different user; CVE-2025-46819 enables denial of service via specially crafted LUA scripts; and CVE-2025-49844 describes a LUA use-after-free vulnerability that may lead to remote code execution. These vulnerabilities affect Redis versions distributed with Red Hat Enterprise Linux 9 and its extended update support variants. Red Hat has released updated Redis packages to remediate these issues.
Potential Impact
The vulnerabilities collectively allow for potential remote code execution, privilege escalation through LUA script execution as different users, and denial of service conditions. Exploitation could compromise system integrity and availability on affected Red Hat Enterprise Linux 9 systems running vulnerable Redis versions.
Mitigation Recommendations
Red Hat has released updated Redis packages (version 6.2.20-1.el9_6 and related) that address these vulnerabilities. Users of affected Red Hat Enterprise Linux 9 variants should apply these security updates promptly following Red Hat's published guidance at https://access.redhat.com/articles/11258. No additional mitigation steps are indicated beyond applying the official patches.
Technical Details
- Gcve Source
- db.gcve.eu
- Csaf Category
- csaf_security_advisory
- Csaf Version
- 2.0
- Publisher
- Red Hat Product Security
- Advisory Id
- RHSA-2025:19237
- Cve Count
- 4
- Additional Cves
- ["CVE-2025-46818","CVE-2025-46819","CVE-2025-49844"]
Threat ID: 6a419caf27e9c79719abaaa7
Added to database: 06/28/2026, 22:14:07 UTC
Last enriched: 07/12/2026, 10:59:29 UTC
Last updated: 09/10/2026, 19:36:50 UTC
Views: 19
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