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NTAP-20260918-0018 — CVE-2026-23442 Linux Kernel Vulnerability in NetApp Products

Published 2026-09-18 · Updated 2026-09-22 · Status: Interim · Exploitation: Public · Severity: MEDIUM 5.5 · ONTAP affected: Yes

Official advisory: NTAP-20260918-0018 on security.netapp.com ↗. Affected versions, fixed releases, and workarounds live there — this page is a summary.

Product family: SolidFire / NetApp HCI · Baseboard management controllers · Active IQ Unified Manager · Brocade SAN firmware · ONTAP · Other NetApp products · NetApp Console / BlueXP · SnapCenter | ONTAP-relevant | highest CVSS: 5.5

CVEs in this advisory

CVE-2026-23442 — MEDIUM · CVSS 5.5 · site index

What the CVE records say

CVE-2026-23442 — In the Linux kernel, the following vulnerability has been resolved: ipv6: add NULL checks for idev in SRv6 paths __in6_dev_get() can return NULL when the device has no IPv6 configuration (e.g. MTU < IPV6_MIN_MTU or after NETDEV_UNREGISTER). Add NULL checks for idev returned by __in6_dev_get() in both seg6_hmac_validate_skb() and ipv6_srh_rcv() to prevent potential NULL pointer dereferences.

Impact

Successful exploitation of this vulnerability could lead to Denial of Service (DoS).

Affected products

NetApp HCI Baseboard Management Controller (BMC) - H610S
AFF Baseboard Management Controller (BMC) - A700s
Active IQ Unified Manager for VMware vSphere
Brocade Fabric Operating System Firmware
Cloud Volumes ONTAP Mediator
FAS/AFF BIOS - A900/9500
FAS/AFF Baseboard Management Controller (BMC) - A250/500f/C250
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-2026-23442 ↗

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.