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NTAP-20260918-0014 — CVE-2026-31407 Linux Kernel Vulnerability in NetApp Products

Published 2026-09-18 · Updated 2026-09-18 · Status: Interim · Exploitation: Public · Severity: HIGH 7.1 · ONTAP affected: Yes

Official advisory: NTAP-20260918-0014 on security.netapp.com ↗. Affected versions, fixed releases, and workarounds live there — this page is a summary.

Product family: ONTAP · Active IQ Unified Manager · Brocade SAN firmware · Other NetApp products · Baseboard management controllers · NetApp Console / BlueXP · SolidFire / NetApp HCI · SnapCenter | ONTAP-relevant | highest CVSS: 7.1

CVEs in this advisory

CVE-2026-31407 — HIGH · CVSS 7.1 · site index

What the CVE records say

CVE-2026-31407 — In the Linux kernel, the following vulnerability has been resolved: netfilter: conntrack: add missing netlink policy validations Hyunwoo Kim reports out-of-bounds access in sctp and ctnetlink. These attributes are used by the kernel without any validation. Extend the netlink policies accordingly. Quoting the reporter: nlattr_to_sctp() assigns the user-supplied CTA_PROTOINFO_SCTP_STATE value directly to ct->proto.sctp.state without checking that it is within the valid range. [..] and: ... with exp->dir = 100, the access at ct->master->tuplehash[100] reads 5600 bytes past the start of a 320-byte nf_conn object, causing a slab-out-of-bounds read confirmed by UBSAN.

Impact

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

Affected products

Cloud Volumes ONTAP Mediator
Active IQ Unified Manager for VMware vSphere
Brocade Fabric Operating System Firmware
FAS/AFF BIOS - A900/9500
FAS/AFF Baseboard Management Controller (BMC) - A250/500f/C250
NetApp Console Agent OVA
NetApp HCI Baseboard Management Controller (BMC) - H610S
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-2026-31407 ↗

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.