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


Severity

Recommended
high

Based on Rocky Linux security rating.

Threat Intelligence

EPSS
1.17% (67th percentile)

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  • Snyk IDSNYK-ROCKY9-VALKEY-19660988
  • published10 Sept 2026
  • disclosed18 Aug 2026

Introduced: 18 Aug 2026

CVE-2026-63639  (opens in a new tab)
CWE-416  (opens in a new tab)

How to fix?

Upgrade Rocky-Linux:9 valkey to version 0:8.0.10-1.el9_8 or higher.
This issue was patched in RLSA-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 Rocky-Linux. See How to fix? for Rocky-Linux:9 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 RESTORE command accepts a malformed RDB stream payload that assigns one Pending Entry List NACK to multiple consumers during stream consumer-group deserialization, causing a use-after-free when one consumer is deleted while another still references the shared NACK and potentially allowing remote code execution. 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