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NTAP-20260424-0014 — CVE-2026-23230 Linux Kernel Vulnerability in NetApp Products

Published 2026-04-24 · Updated 2026-08-05 · Status: Interim · Exploitation: Public · Severity: HIGH 8.8 · ONTAP affected: Yes

Official advisory: NTAP-20260424-0014 on security.netapp.com ↗. Affected versions, fixed releases, and workarounds live there — this page is a summary.

Product family: ONTAP · NetApp Console / BlueXP · SolidFire / NetApp HCI | ONTAP-relevant | highest CVSS: 8.8

CVEs in this advisory

CVE-2026-23230 — HIGH · CVSS 8.8 · site index

What the CVE records say

CVE-2026-23230 — In the Linux kernel, the following vulnerability has been resolved: smb: client: split cached_fid bitfields to avoid shared-byte RMW races is_open, has_lease and on_list are stored in the same bitfield byte in struct cached_fid but are updated in different code paths that may run concurrently. Bitfield assignments generate byte read–modify–write operations (e.g. `orb $mask, addr` on x86_64), so updating one flag can restore stale values of the others. A possible interleaving is: CPU1: load old byte (has_lease=1, on_list=1) CPU2: clear both flags (store 0) CPU1: RMW store (old | IS_OPEN) -> reintroduces cleared bits To avoid this class of races, convert these flags to separate bool fields.

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 tools for VMware vSphere 10
NetApp Console Agent OVA
NetApp SolidFire & HCI Management Node
NetApp SolidFire & HCI Storage Node (Element Software)

Official fixes

ONTAP tools for VMware vSphere 10 — vendor fix ↗

References

https://lore.kernel.org/linux-cve-announce/2026021808-CVE-2026-23230-8d0e@gregkh/T/#u ↗

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.