RHSA-2026:14316HighCVSS 8.8

Red Hat Security Advisory: Red Hat Hardened Images RPMs bug fix and enhancement update

Published
May 6, 2026
Last Modified
September 5, 2026

🔗 CVE IDs covered (3)

CVE-2026-23479 →CVE-2026-23631 →CVE-2026-25243 →

📋 Description

CVE-2026-23479 — redis: use-after-free in unblock client flow may allow remote code execution CVE-2026-23631 — redis: Remote code execution via use-after-free in Lua scripting CVE-2026-25243 — redis: RESTORE invalid memory access may allow remote code execution

🎯 Affected products5

  • Red Hat Hardened Images
  • valkey-main@aarch64 as a component of Red Hat Hardened Images
  • valkey-main@noarch as a component of Red Hat Hardened Images
  • valkey-main@src as a component of Red Hat Hardened Images
  • valkey-main@x86_64 as a component of Red Hat Hardened Images

✅ Remediation

For details on how to apply this update, which includes the changes described in this advisory, refer to: https://images.redhat.com/ Workaround: Red Hat has investigated whether a possible mitigation exists for this issue, and has not been able to identify a practical example. Please update the affected package as soon as possible. Workaround: To mitigate this flaw, ensure that Redis replicas maintain `replica-read-only` as enabled and prevent its modification by unauthorized users. If Lua scripting is not a required feature, consider disabling it to reduce the attack surface. Restricting network access to Redis instances to trusted clients can also limit exposure. For Redis configuration, edit the `redis.conf` file to include or verify: `replica-read-only yes` After modifying the configuration, restart the Redis service for the changes to take effect. This action will temporarily interrupt service availability. Workaround: To mitigate this flaw, restrict the execution privileges of the RESTORE command exclusively to highly trusted and administrative users by using the appropriate ACL rules.

🔗 References (7)