redis-server use-after-free in unblock client flow may allow remote code execution
Redis is an in-memory data structure store. In redis-server from 7.2.0 until 8.6.3, the unblock client flow does not handle an error return from `processCommandAndResetClient` when re-executing a blocked command. If a blocked client is evicted during this flow, an authenticated attacker can trigger a use-after-free that may lead to remote code execution. This has been patched in version 8.6.3.
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describes (1)
Related CVEs.
| ID | severity | exploitable | ||
|---|---|---|---|---|
| CVE-2026-23479US | high8.8 | Exploit | ||
Redis is an in-memory data structure store. In redis-server from 7.2.0 until 8.6.3, the unblock client flow does not handle an error return from `processCommandAndResetClient` when… | ||||
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references
External citations — patches, advisories, analysis.
- https://access.redhat.com/errata/RHSA-2026:14316WEB
- https://access.redhat.com/errata/RHSA-2026:25216WEB
- https://access.redhat.com/errata/RHSA-2026:25219WEB
- https://access.redhat.com/errata/RHSA-2026:25925WEB
- https://access.redhat.com/errata/RHSA-2026:26306WEB
- https://access.redhat.com/errata/RHSA-2026:26540WEB
- https://access.redhat.com/errata/RHSA-2026:7662WEB
- https://access.redhat.com/security/cve/CVE-2026-23479WEB
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