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NTAP-20260123-0004 — CVE-2025-39942 Linux Kernel Vulnerability in NetApp Products

Published 2026-01-23 · Updated 2026-09-17 · Status: Interim · Exploitation: Public · Severity: HIGH 7.5 · ONTAP affected: Yes

Official advisory: NTAP-20260123-0004 on security.netapp.com ↗. Affected versions, fixed releases, and workarounds live there — this page is a summary.

Product family: ONTAP · NetApp Console / BlueXP | ONTAP-relevant | highest CVSS: 7.5

CVEs in this advisory

CVE-2025-39942 — HIGH · CVSS 7.5 · site index

What the CVE records say

CVE-2025-39942 — In the Linux kernel, the following vulnerability has been resolved: ksmbd: smbdirect: verify remaining_data_length respects max_fragmented_recv_size This is inspired by the check for data_offset + data_length.

Impact

Successful exploitation of this vulnerability could lead to disclosure of sensitive information, addition or modification of data, or Denial of Service (DoS).

Affected products

ONTAP Select Deploy administration utility
NetApp Console Agent OVA

References

https://nvd.nist.gov/vuln/detail/CVE-2025-39942 ↗

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.