SB2026051857 - SUSE update for valkey
Published: May 18, 2026
Breakdown by Severity
- Low
- Medium
- High
- Critical
Description
This security bulletin contains information about 3 vulnerabilities.
1) Use-after-free (CVE-ID: CVE-2026-23479)
CWE-ID: CWE-416 - Use After Free
CVSSv4: CVSS:4.0/AV:N/AC:L/AT:P/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:U/U:Green
The vulnerability allows a remote user to execute arbitrary code.
The vulnerability exists due to use-after-free in the unblock client flow when a blocked client is evicted while re-executing a blocked command. A remote user can trigger this condition to execute arbitrary code.
The issue occurs because processCommandAndResetClient does not handle an error return value in this flow.
2) Use-after-free (CVE-ID: CVE-2026-23631)
CWE-ID: CWE-416 - Use After Free
CVSSv4: CVSS:4.0/AV:N/AC:L/AT:P/PR:L/UI:N/VC:N/VI:H/VA:H/SC:N/SI:N/SA:N/E:U/U:Green
The vulnerability allows a remote user to execute arbitrary code.
The vulnerability exists due to use-after-free in the Lua scripting synchronization mechanism when exploiting master-replica synchronization. A remote user can trigger the flaw through crafted Lua script execution to execute arbitrary code.
Only replicas with replica-read-only disabled are vulnerable.
3) Heap-based buffer overflow (CVE-ID: CVE-2026-25243)
CWE-ID: CWE-122 - Heap-based Buffer Overflow
CVSSv4: CVSS:4.0/AV:N/AC:L/AT:P/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:U/U:Green
The vulnerability allows a remote user to execute arbitrary code.
The vulnerability exists due to improper input validation in the RESTORE command when processing a specially crafted serialized payload. A remote user can send a specially crafted serialized payload to execute arbitrary code.
Exploitation requires permission to execute the RESTORE command.
Remediation
Install update from vendor's website.