RHSA-2026:26540HighCVSS 8.8

Red Hat Security Advisory: valkey security update

Published
June 17, 2026
Last Modified
October 6, 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 products18

  • Red Hat Enterprise Linux AppStream EUS (v. 10.0)
  • valkey-0:8.0.9-1.el10_0.aarch64 as a component of Red Hat Enterprise Linux AppStream EUS (v. 10.0)
  • valkey-0:8.0.9-1.el10_0.ppc64le as a component of Red Hat Enterprise Linux AppStream EUS (v. 10.0)
  • valkey-0:8.0.9-1.el10_0.s390x as a component of Red Hat Enterprise Linux AppStream EUS (v. 10.0)
  • valkey-0:8.0.9-1.el10_0.src as a component of Red Hat Enterprise Linux AppStream EUS (v. 10.0)
  • valkey-0:8.0.9-1.el10_0.x86_64 as a component of Red Hat Enterprise Linux AppStream EUS (v. 10.0)
  • valkey-debuginfo-0:8.0.9-1.el10_0.aarch64 as a component of Red Hat Enterprise Linux AppStream EUS (v. 10.0)
  • valkey-debuginfo-0:8.0.9-1.el10_0.ppc64le as a component of Red Hat Enterprise Linux AppStream EUS (v. 10.0)
  • valkey-debuginfo-0:8.0.9-1.el10_0.s390x as a component of Red Hat Enterprise Linux AppStream EUS (v. 10.0)
  • valkey-debuginfo-0:8.0.9-1.el10_0.x86_64 as a component of Red Hat Enterprise Linux AppStream EUS (v. 10.0)
  • valkey-debugsource-0:8.0.9-1.el10_0.aarch64 as a component of Red Hat Enterprise Linux AppStream EUS (v. 10.0)
  • valkey-debugsource-0:8.0.9-1.el10_0.ppc64le as a component of Red Hat Enterprise Linux AppStream EUS (v. 10.0)
  • valkey-debugsource-0:8.0.9-1.el10_0.s390x as a component of Red Hat Enterprise Linux AppStream EUS (v. 10.0)
  • valkey-debugsource-0:8.0.9-1.el10_0.x86_64 as a component of Red Hat Enterprise Linux AppStream EUS (v. 10.0)
  • valkey-devel-0:8.0.9-1.el10_0.aarch64 as a component of Red Hat Enterprise Linux AppStream EUS (v. 10.0)
  • valkey-devel-0:8.0.9-1.el10_0.ppc64le as a component of Red Hat Enterprise Linux AppStream EUS (v. 10.0)
  • valkey-devel-0:8.0.9-1.el10_0.s390x as a component of Red Hat Enterprise Linux AppStream EUS (v. 10.0)
  • valkey-devel-0:8.0.9-1.el10_0.x86_64 as a component of Red Hat Enterprise Linux AppStream EUS (v. 10.0)

✅ Remediation

For details on how to apply this update, which includes the changes described in this advisory, refer to: https://access.redhat.com/articles/11258 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 (6)