CVE-2026-85522: valkey-io valkey Slot Migration cluster_migrateslots.c createSlotImportJob out-of-bounds
A vulnerability was detected in valkey-io valkey up to 9.5.4/9.1.0. Affected by this vulnerability is the function createSlotImportJob of the file src/clustermigrateslots.c of the component Slot Migration. The manipulation of the argument jobname results in out-of-bounds read. The attack can be executed remotely. The exploit is now public and may be used. Upgrading to version 9.0.5 and 9.1.1 addresses this issue. The patch is identified as f4dc3ca09eb650c2fe14060090a41c524eca803f. Upgrading the affected component is advised.
Affected Software
Remediation
Recommended actions to resolve this vulnerability, in priority order.
- Upgrade
Upgrade
valkey-io valkey Slot Migration (cluster_migrateslots.c createSlotImportJob)to a version that resolves this vulnerability.Fixed in 9.0.5Patch f4dc3ca09eb650c2fe14060090a41c524eca803f - Upgrade
Upgrade
valkey-io valkey Slot Migration (cluster_migrateslots.c createSlotImportJob)to a version that resolves this vulnerability.Fixed in 9.1.1
Event History
Frequently Asked Questions
What level of access does an attacker need?
The issue is remotely exploitable with no privileges and no user interaction required. Public exploit code is reported to be available.
What is the expected security impact?
The supplied vector rates the availability impact as low, with no confidentiality or integrity impact. The issue is an out-of-bounds read in Slot Migration.
Which deployments should be prioritized for remediation?
Prioritize Valkey deployments using the Slot Migration component on affected versions reported as up to 9.5.4/9.1.0. The provided remediation guidance is to upgrade to 9.0.5 or 9.1.1, using patch f4dc3ca09eb650c2fe14060090a41c524eca803f.