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NTAP-20261030-0011 — CVE-2026-46137 Linux Kernel Vulnerability in NetApp Products

Published 2026-10-30 · Updated 2026-10-30 · Status: Interim · Exploitation: Public · Severity: CRITICAL 9.8 · ONTAP affected: Yes

Official advisory: NTAP-20261030-0011 on security.netapp.com ↗. Affected versions, fixed releases, and workarounds live there — this page is a summary.

Product family: SolidFire / NetApp HCI · ONTAP · Active IQ Unified Manager · Brocade SAN firmware · Baseboard management controllers · NetApp Console / BlueXP · SnapCenter | ONTAP-relevant | highest CVSS: 9.8

CVEs in this advisory

CVE-2026-46137 — CRITICAL · CVSS 9.8 · site index

What the CVE records say

CVE-2026-46137 — In the Linux kernel, the following vulnerability has been resolved: mptcp: pm: ADD_ADDR rtx: fix potential data-race This mptcp_pm_add_timer() helper is executed as a timer callback in softirq context. To avoid any data races, the socket lock needs to be held with bh_lock_sock(). If the socket is in use, retry again soon after, similar to what is done with the keepalive timer.

Impact

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

Affected products

NetApp HCI Baseboard Management Controller (BMC) - H610S
ONTAP Select Deploy administration utility
Active IQ Unified Manager for VMware vSphere
Brocade Fabric Operating System Firmware
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://lore.kernel.org/linux-cve-announce/2026052819-CVE-2026-46137-eb9d@gregkh/ ↗

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.