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Highest advisory severityHigh 2 vendors · 2 advisories

CVE-2026-53398

Linux Kernel Vulnerability in NetApp Products

CVE-2026-53398: Linux Kernel Vulnerability in NetApp Products. Not in the CISA KEV catalog. High advisory severity (CVSS 7, NetApp).

Compare the source-linked records below. Ratings and product/version details belong to each advisory; they are not a single CVE-wide score or proof that every listed product is affected. How VulniPulse collects and checks evidence.

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CVE-2026-53398 key facts

CISA KEV
Not listed (catalog checked )
Highest advisory severity
High
CVSS base score
7 (NetApp), 7 (Red Hat)
Fixed releases
  • Red Hat: kernel-0:6.12.0-211.64.1.el10_2, kernel-0:5.14.0-687.56.1.el9_8, RHSA-2026:77690, RHSA-2026:77689
Vendor advisories
2 from NetApp, Red Hat
VulniPulse record
Published · Updated

Scores, vectors, weaknesses and fixed releases are quoted from vendor advisories that cover only CVE-2026-53398; bulletin-wide values are not repeated here.

Is CVE-2026-53398 exploited?

No exploitation is reported in the sources VulniPulse tracks: CVE-2026-53398 is not in the CISA KEV catalog (checked ) and no tracked advisory for it reports exploitation. That is not proof the vulnerability cannot be exploited.

How do I fix CVE-2026-53398?

Upgrade to a fixed release named by the vendor:

  • Red Hat: kernel-0:6.12.0-211.64.1.el10_2, kernel-0:5.14.0-687.56.1.el9_8, RHSA-2026:77690, RHSA-2026:77689
  • Mitigation for this issue is either not available or the currently available options do not meet the Red Hat Product Security criteria comprising ease of use and deployment, applicability to widespread installation base, or stability. (Red Hat)

Vendor advisory comparison

NetApp

1 advisory
  • Advisory severityHigh7.0

    High [CVE-2026-53398] Linux Kernel Vulnerability in NetApp Products

    NTAP-20261030-0007Source published Source updated

    Linux kernel versions 5.10.220 through 5.10.259, 5.15.154 through 5.15.210, 6.1 through 6.1.176, 6.2 through 6.6.143, 6.7 through 6.12.94, 6.13 through 6.18.37 and 6.19 through 7.1.2 are susceptible to a vulnerability which when successfully exploited could lead to disclosure of sensitive information, addition or modification of data or Denial of Service (DoS). NetApp reports that one or more additional products remain under investigation; review the canonical advisory for current status. NetApp states there is no workaround available at this time.

    Affected products in this advisory
    No product details extracted. Check the source bulletin.
    Source-reported affected versions
    • 5.10.220
    • 5.10.259
    • 5.15.154
    • 5.15.210

    7 more entries in the full advisory.

    Source-reported fixed versions
    No fixed-version detail extracted. This does not mean no fix exists.
    Mitigation guidance
    No mitigation guidance extracted; consult the source.
    Full advisory and evidenceOpen source bulletin

Red Hat

1 advisory
  • Advisory severityHigh7.0

    High [CVE-2026-53398] Fix SECINFO_NO_NAME decode error cleanup

    CVE-2026-53398Source published Source updated

    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(). A flaw was found in…

    Affected products in this advisory
    • Red Hat Enterprise Linux 10
    • Red Hat Enterprise Linux 9
    • Shadow Migration Toolkit for Virtualization for RHEL 10
    • Red Hat package: kernel-rt
    Source-reported affected versions
    Affected-version details not available in this record.
    Source-reported fixed versions
    • kernel-0:6.12.0-211.64.1.el10_2
    • kernel-0:5.14.0-687.56.1.el9_8
    • RHSA-2026:77690
    • RHSA-2026:77689
    Mitigation guidance
    • Mitigation for this issue is either not available or the currently available options do not meet the Red Hat Product Security criteria comprising ease of use and deployment, applicability to widespread installation base, or stability.
    Full advisory and evidenceOpen source bulletin

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