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Highest advisory severityCritical 2 vendors · 2 advisories

CVE-2026-64534

Linux Kernel Vulnerability in NetApp Products

CVE-2026-64534: Linux Kernel Vulnerability in NetApp Products. Not in the CISA KEV catalog. Critical advisory severity (CVSS 9.8, 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-2026-64534 key facts

CISA KEV
Not listed (catalog checked )
Highest advisory severity
Critical
CVSS base score
9.8 (NetApp), 7 (Red Hat)
CVSS vector
  • CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H (Red Hat)
Weakness
CWE-911
Fixed releases
  • Red Hat: kernel-0:6.12.0-211.58.1.el10_2, kernel-rt-0:4.18.0-553.166.1.rt7.507.el8_10, kernel-0:4.18.0-553.166.1.el8_10, kernel-0:5.14.0-687.51.1.el9_8, RHSA-2026:70498, RHSA-2026:70403 and 2 more in the advisory
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-2026-64534; bulletin-wide values are not repeated here.

Is CVE-2026-64534 exploited?

No exploitation is reported in the sources VulniPulse tracks: CVE-2026-64534 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-2026-64534?

Upgrade to a fixed release named by the vendor:

  • Red Hat: kernel-0:6.12.0-211.58.1.el10_2, kernel-rt-0:4.18.0-553.166.1.rt7.507.el8_10, kernel-0:4.18.0-553.166.1.el8_10, kernel-0:5.14.0-687.51.1.el9_8, RHSA-2026:70498, RHSA-2026:70403

Vendor advisory comparison

NetApp

1 advisory
  • Advisory severityCritical9.8

    Critical [CVE-2026-64534] Linux Kernel Vulnerability in NetApp Products

    NTAP-20260814-0003Source published Source updated

    Linux kernel versions prior to 5.10.261, 5.11.0 prior to 5.15.212, 5.16.0 prior to 6.1.178, 6.2.0 prior to 6.6.145, 6.7.0 prior to 6.12.97, 6.13.0 prior to 6.18.40, and 6.19.0 prior to 7.1 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
    • 5.10.261
    • 5.11.0
    • 5.15.212
    • 5.16.0

    8 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-2026-64534] check INIT_FAILED before nvmet_req_uninit in digest error path

    CVE-2026-64534Source published Source updated

    In the Linux kernel, the following vulnerability has been resolved: nvmet-tcp: check INIT_FAILED before nvmet_req_uninit in digest error path In nvmet_tcp_try_recv_ddgst(), when a data digest mismatch is detected, nvmet_req_uninit() is called unconditionally. However, if the command arrived via the nvmet_tcp_handle_req_failure() path, nvmet_req_init() had returned false and percpu_ref_tryget_live() was never executed. The unconditional percpu_ref_put() inside nvmet_req_uninit() then causes a refcount underflow, leading to a WARNING in percpu_ref_switch_to_atomic_rcu, a use-after-free diagnostic, and eventually a permanent workqueue deadlock. Check cmd->flags & NVMET_TCP_F_INIT_FAILED before calling nvmet_req_uninit(), matching the existing pattern in nvmet_tcp_execute_request(). A flaw…

    Affected products in this advisory
    • Red Hat Enterprise Linux 10
    • Red Hat Enterprise Linux 8
    • Red Hat Enterprise Linux 9
    • Red Hat package: kernel-rt
    Source-reported affected versions
    Affected-version details not available in this record.
    Source-reported fixed versions
    • kernel-0:6.12.0-211.58.1.el10_2
    • kernel-rt-0:4.18.0-553.166.1.rt7.507.el8_10
    • kernel-0:4.18.0-553.166.1.el8_10
    • kernel-0:5.14.0-687.51.1.el9_8

    4 more entries in the full advisory.

    Mitigation guidance
    No mitigation guidance extracted; consult the source.
    Full advisory and evidenceOpen source bulletin

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