Double Free Affecting redis:6/redis-devel package, versions <0:6.2.24-1.module_el8.10.0+4271+7f8f19af


Severity

Recommended
high

Based on AlmaLinux security rating.

Threat Intelligence

EPSS
0.87% (58th percentile)

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  • Snyk IDSNYK-ALMALINUX8-REDIS-19651716
  • published9 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:8 redis:6/redis-devel to version 0:6.2.24-1.module_el8.10.0+4271+7f8f19af or higher.
This issue was patched in ALSA-2026:64823.

NVD Description

Note: Versions mentioned in the description apply only to the upstream redis:6/redis-devel package and not the redis:6/redis-devel package as distributed by AlmaLinux. See How to fix? for AlmaLinux:8 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