Bug 2466788 (CVE-2026-23631)

Summary: CVE-2026-23631 redis: Remote code execution via use-after-free in Lua scripting
Product: [Other] Security Response Reporter: OSIDB Bzimport <bzimport>
Component: vulnerabilityAssignee: Product Security <prodsec-ir-bot>
Status: NEW --- QA Contact:
Severity: high Docs Contact:
Priority: high    
Version: unspecifiedCC: rhel-process-autobot, watson-tool-maintainers
Target Milestone: ---Keywords: Security
Target Release: ---   
Hardware: All   
OS: Linux   
Whiteboard:
Fixed In Version: Doc Type: ---
Doc Text:
A flaw was found in Redis, an in-memory data structure store. An authenticated attacker can exploit a use-after-free vulnerability in redis-server with Lua scripting. This occurs through the master-replica synchronization mechanism on replicas where replica-read-only is disabled or can be disabled. Successful exploitation may lead to remote code execution.
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Clone Of: Environment:
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oVirt Team: --- RHEL 7.3 requirements from Atomic Host:
Cloudforms Team: --- Target Upstream Version:
Embargoed:
Bug Depends On: 2481445, 2481446    
Bug Blocks:    

Description OSIDB Bzimport 2026-05-05 17:02:47 UTC
Redis is an in-memory data structure store. In all versions of redis-server with Lua scripting, an authenticated attacker can exploit the master-replica synchronization mechanism to trigger a use-after-free on replicas where replica-read-only is disabled or can be disabled, which may lead to remote code execution. A workaround is to prevent users from executing Lua scripts or avoid using replicas where replica-read-only is disabled. This is patched in version 8.6.3.

Comment 3 errata-xmlrpc 2026-06-11 09:51:19 UTC
This issue has been addressed in the following products:

  Red Hat Enterprise Linux 10

Via RHSA-2026:25216 https://access.redhat.com/errata/RHSA-2026:25216

Comment 4 errata-xmlrpc 2026-06-11 11:24:50 UTC
This issue has been addressed in the following products:

  Red Hat Enterprise Linux 9

Via RHSA-2026:25219 https://access.redhat.com/errata/RHSA-2026:25219

Comment 5 errata-xmlrpc 2026-06-15 10:00:59 UTC
This issue has been addressed in the following products:

  Red Hat Enterprise Linux 9

Via RHSA-2026:25925 https://access.redhat.com/errata/RHSA-2026:25925

Comment 6 errata-xmlrpc 2026-06-16 13:26:37 UTC
This issue has been addressed in the following products:

  Red Hat Enterprise Linux 9.6 Extended Update Support

Via RHSA-2026:26306 https://access.redhat.com/errata/RHSA-2026:26306

Comment 7 errata-xmlrpc 2026-06-17 10:36:06 UTC
This issue has been addressed in the following products:

  Red Hat Enterprise Linux 10.0 Extended Update Support

Via RHSA-2026:26540 https://access.redhat.com/errata/RHSA-2026:26540

Comment 8 errata-xmlrpc 2026-06-30 09:36:44 UTC
This issue has been addressed in the following products:

  Red Hat Enterprise Linux 9.4 Update Services for SAP Solutions

Via RHSA-2026:33444 https://access.redhat.com/errata/RHSA-2026:33444