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NTAP-20251224-0012 — CVE-2025-39823 Linux Kernel Vulnerability in NetApp Products

Published 2025-12-24 · Updated 2026-10-07 · Status: Interim · Exploitation: Public · Severity: HIGH 7.8 · ONTAP affected: Yes

Official advisory: NTAP-20251224-0012 on security.netapp.com ↗. Affected versions, fixed releases, and workarounds live there — this page is a summary.

Product family: Active IQ Unified Manager · ONTAP · Other NetApp products · NetApp Console / BlueXP · SolidFire / NetApp HCI · SnapCenter | ONTAP-relevant | highest CVSS: 7.8

CVEs in this advisory

CVE-2025-39823 — HIGH · CVSS 7.8 · site index

What the CVE records say

CVE-2025-39823 — In the Linux kernel, the following vulnerability has been resolved: KVM: x86: use array_index_nospec with indices that come from guest min and dest_id are guest-controlled indices. Using array_index_nospec() after the bounds checks clamps these values to mitigate speculative execution side-channels.

Impact

Successful exploitation of this vulnerability could lead to disclosure of sensitive information or addition or modification of data.

Affected products

Active IQ Unified Manager for VMware vSphere
ONTAP Select Deploy administration utility
Cloud Volumes ONTAP Mediator
FAS/AFF BIOS - A900/9500
NetApp Console Agent OVA
NetApp SolidFire & HCI Management Node
NetApp SolidFire & HCI Storage Node (Element Software)
ONTAP tools for VMware vSphere 10
SnapCenter Plug-in for VMware vSphere

References

https://nvd.nist.gov/vuln/detail/CVE-2025-39823 ↗

What to do

Check the affected products listed above against the official advisory's affected-versions table — that is where the exact ONTAP 9 release, ONTAP tool, or management product versions are named.
If affected and a fixed release exists, plan the upgrade — see the ONTAP upgrade runbook.
If exploitation is listed as "active", treat remediation as urgent and review exposure (management LIFs, ONTAP S3, SnapMirror endpoints).
Harden in parallel: security hardening baseline and ransomware protection on ONTAP.