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 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 two vulnerabilities in Redis as packaged for Red Hat Enterprise Linux 9.0. CVE-2025-46817 is an integer overflow issue in Redis Lua library commands that could lead to remote code execution. CVE-2025-49844 is a use-after-free vulnerability in Redis Lua that may also result in remote code execution. Both vulnerabilities affect Redis version 6.2.6-1.el9_0.5 and earlier versions shipped with Red Hat Enterprise Linux 9.0. Red Hat has issued updated packages to remediate these issues. No CVSS scores are provided in the advisory, but the severity is rated as important/high by Red Hat.
Potential Impact
Successful exploitation of these vulnerabilities could allow an attacker to execute arbitrary code remotely on affected systems running vulnerable Redis versions. This could lead to full compromise of the Redis service and potentially the underlying host. The integer overflow and use-after-free issues specifically impact the Lua scripting functionality within Redis, which is commonly used for advanced data processing. The vulnerabilities affect multiple CPU architectures supported by Red Hat Enterprise Linux 9.0.
Mitigation Recommendations
Red Hat has released updated Redis packages (version 6.2.6-1.el9_0.5) that fix these vulnerabilities. Users of affected Red Hat Enterprise Linux 9.0 systems should apply the security update promptly following Red Hat's official guidance at https://access.redhat.com/articles/11258. No alternative mitigations or workarounds are indicated in the advisory. Systems not updated remain vulnerable to potential remote code execution via the described Lua vulnerabilities.
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 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
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
This advisory covers two vulnerabilities in Redis as packaged for Red Hat Enterprise Linux 9.0. CVE-2025-46817 is an integer overflow issue in Redis Lua library commands that could lead to remote code execution. CVE-2025-49844 is a use-after-free vulnerability in Redis Lua that may also result in remote code execution. Both vulnerabilities affect Redis version 6.2.6-1.el9_0.5 and earlier versions shipped with Red Hat Enterprise Linux 9.0. Red Hat has issued updated packages to remediate these issues. No CVSS scores are provided in the advisory, but the severity is rated as important/high by Red Hat.
Potential Impact
Successful exploitation of these vulnerabilities could allow an attacker to execute arbitrary code remotely on affected systems running vulnerable Redis versions. This could lead to full compromise of the Redis service and potentially the underlying host. The integer overflow and use-after-free issues specifically impact the Lua scripting functionality within Redis, which is commonly used for advanced data processing. The vulnerabilities affect multiple CPU architectures supported by Red Hat Enterprise Linux 9.0.
Mitigation Recommendations
Red Hat has released updated Redis packages (version 6.2.6-1.el9_0.5) that fix these vulnerabilities. Users of affected Red Hat Enterprise Linux 9.0 systems should apply the security update promptly following Red Hat's official guidance at https://access.redhat.com/articles/11258. No alternative mitigations or workarounds are indicated in the advisory. Systems not updated remain vulnerable to potential remote code execution via the described Lua vulnerabilities.
Technical Details
- Gcve Source
- db.gcve.eu
- Csaf Category
- csaf_security_advisory
- Csaf Version
- 2.0
- Publisher
- Red Hat Product Security
- Advisory Id
- RHSA-2025:18997
- Cve Count
- 2
- Additional Cves
- ["CVE-2025-49844"]
Threat ID: 6a419caf27e9c79719abaabe
Added to database: 06/28/2026, 22:14:07 UTC
Last enriched: 07/12/2026, 10:59:58 UTC
Last updated: 09/10/2026, 19:36:50 UTC
Views: 13
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