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VulnerabilityPublished Updated

CVE-2026-64511: Linux kernel · ACPI: NFIT: core: Fix possible NULL pointer dereference

Affects Linux kernelSource GCVE Database

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Not known to be exploited.

Data as of 3 Nov 2026, 18:43 UTC

Severity
Medium

Rated Medium by Threat Radar's AI analysis · No CVSS score from NVD or the CNA

Thin evidence

One scorer or none

Exploitation evidence

  1. Disclosed: evidence found.

    CVE published 25 Jul 2026

  2. Detectable: no evidence on record.

    No public nuclei template indexed

  3. Weaponized: no evidence on record.

    No public exploit code indexed in Metasploit or Exploit-DB

  4. Exploited in the wild: no evidence on record.

    Not in CISA KEV and no source reports exploitation

  5. Observed by OffSeq Mirage: no evidence on record.

    No attack traffic recorded by OffSeq Mirage sensors

A missing step is not evidence of safety. Sources: cve.org (opens in a new tab), the Metasploit, Exploit-DB and nuclei-templates index as of 3 Nov 2026.

What to do

AI-suggested

A fix has been implemented by adding a NULL pointer check in the acpi_nfit_uc_error_notify() function. Users should update their Linux kernel to a version that includes this fix once it is released. Since this is a kernel-level issue, applying the official patch or updating the kernel is the recommended mitigation.

Description

A vulnerability in the Linux kernel's ACPI NFIT core could lead to a NULL pointer dereference. This occurs because the ACPI notify handler is installed before confirming the presence of the NFIT table, potentially causing a NULL pointer dereference if a specific notification is triggered without the NFIT table being present. The issue is addressed by adding a NULL check before dereferencing the pointer.

References

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