Use After Free Affecting valkey package, versions <0:8.0.9-1.el10_2


Severity

Recommended
0.0
high
0
10

Based on Oracle Linux security rating.

Threat Intelligence

Exploit Maturity
Proof of Concept
EPSS
2.81% (86th percentile)

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  • Snyk IDSNYK-ORACLE10-VALKEY-18006768
  • published17 Jul 2026
  • disclosed5 May 2026

Introduced: 5 May 2026

CVE-2026-23631  (opens in a new tab)
CWE-416  (opens in a new tab)

How to fix?

Upgrade Oracle:10 valkey to version 0:8.0.9-1.el10_2 or higher.
This issue was patched in ELSA-2026-25216.

NVD Description

Note: Versions mentioned in the description apply only to the upstream valkey package and not the valkey package as distributed by Oracle. See How to fix? for Oracle:10 relevant fixed versions and status.

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.

CVSS Base Scores

version 3.1