Use After Free Affecting valkey package, versions <0:8.0.11-1.el10_2


Severity

Recommended
high

Based on Oracle Linux security rating.

Threat Intelligence

EPSS
0.89% (58th percentile)

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  • Snyk IDSNYK-ORACLE10-VALKEY-19655361
  • published9 Sept 2026
  • disclosed18 Aug 2026

Introduced: 18 Aug 2026

CVE-2026-56684  (opens in a new tab)
CWE-416  (opens in a new tab)

How to fix?

Upgrade Oracle:10 valkey to version 0:8.0.11-1.el10_2 or higher.
This issue was patched in ELSA-2026-64796-0.

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.

Valkey is a distributed key-value database. Prior to 7.2.14, 8.0.10, 8.1.9, 9.0.5, and 9.1.1, Valkey's tlsProcessPendingData function iterates pending_list while an authenticated client can trigger CLIENT KILL, causing connTLSClose to delete the iterator's cached next node and producing a use-after-free that can crash the server or potentially allow remote code execution when TLS is enabled. This issue is fixed in versions 7.2.14, 8.0.10, 8.1.9, 9.0.5, and 9.1.1.

CVSS Base Scores

version 3.1