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NTAP-20261030-0007 — CVE-2026-53398 Linux Kernel Vulnerability in NetApp Products

Published 2026-10-30 · Updated 2026-10-30 · Status: Interim · Exploitation: Public · Severity: CRITICAL 9.8 · ONTAP affected: No — other NetApp product

Official advisory: NTAP-20261030-0007 on security.netapp.com ↗. Affected versions, fixed releases, and workarounds live there — this page is a summary.

Product family: Brocade SAN firmware · Baseboard management controllers · NetApp Console / BlueXP · SolidFire / NetApp HCI · SnapCenter | other NetApp product | highest CVSS: 9.8

CVEs in this advisory

CVE-2026-53398 — CRITICAL · CVSS 9.8 · site index

What the CVE records say

CVE-2026-53398 — In the Linux kernel, the following vulnerability has been resolved: NFSD: Fix SECINFO_NO_NAME decode error cleanup nfsd4_decode_secinfo_no_name() currently initializes sin_exp after decoding sin_style. If the XDR stream is truncated, the decoder returns nfserr_bad_xdr before sin_exp is initialized. Since commit 3fdc54646234 ("NFSD: Reduce amount of struct nfsd4_compoundargs that needs clearing"), the inline iops array is not cleared between RPC calls. A failed SECINFO_NO_NAME decode can therefore leave sin_exp holding stale union contents from a previous operation. The error response path still invokes nfsd4_secinfo_no_name_release(), which calls exp_put() on a non-NULL sin_exp. Initialize sin_exp before the first failable decode step, matching nfsd4_decode_secinfo().

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

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)
SnapCenter Plug-in for VMware vSphere

References

https://lore.kernel.org/linux-cve-announce/2026071957-CVE-2026-53398-56e9@gregkh/ ↗

What to do

Compare your installed product and version against the affected list above and the official advisory's affected-versions table.
Apply the fixed release named in the official advisory, or the documented workaround if no fix ships yet.
Limit management-plane exposure (BMC/management interfaces, web UIs, SNMP) until patched.
Track follow-ups in the site CVE index and the security RSS feed.