Double Free Affecting valkey package, versions <0:8.0.10-1.el9_8


Severity

Recommended
high

Based on AlmaLinux security rating.

Threat Intelligence

EPSS
0.87% (58th percentile)

Do your applications use this vulnerable package?

In a few clicks we can analyze your entire application and see what components are vulnerable in your application, and suggest you quick fixes.

Test your applications
  • Snyk IDSNYK-ALMALINUX9-VALKEY-19665093
  • published10 Sept 2026
  • disclosed8 Sept 2026

Introduced: 8 Sep 2026

CVE-2026-66373  (opens in a new tab)
CWE-415  (opens in a new tab)

How to fix?

Upgrade AlmaLinux:9 valkey to version 0:8.0.10-1.el9_8 or higher.
This issue was patched in ALSA-2026:64807.

NVD Description

Note: Versions mentioned in the description apply only to the upstream valkey package and not the valkey package as distributed by AlmaLinux. See How to fix? for AlmaLinux:9 relevant fixed versions and status.

Redis before 8.8.0, in the unusual case where an authenticated attacker can execute RESTORE, allows remote code execution via a RESTORE payload where the same NACK (pending entry) is referenced by more than one consumer, because deleting both consumers via XGROUP DELCONSUMER leads to a double free. NOTE: this issue exists because of an incomplete fix for CVE-2026-25243.

CVSS Base Scores

version 3.1