CVE-2026-64510

Local kernel compromise via stale NFIT descriptor

Published Jul 25, 2026 · Updated Jul 25, 2026

Use-after-free in the Linux kernel ACPI NFIT subsystem allows local users to compromise the kernel through an ACPI machine check. Failed initialization or device removal frees an acpi_desc without unlinking it from acpi_descs, so nfit_handle_mce dereferences the stale entry. Reachability requires NFIT hardware, a stale descriptor, and an uncorrectable machine check; the result is kernel-memory access, code execution, deadlock, oops, or panic.

CVSS severity7.0
High
EPSS probability0.11%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Use-after-free in the Linux kernel ACPI NFIT subsystem allows local users to compromise the kernel through an ACPI machine check. Failed initialization or device removal frees an acpi_desc without unlinking it from acpi_descs, so nfit_handle_mce dereferences the stale entry. Reachability requires NFIT hardware, a stale descriptor, and an uncorrectable machine check; the result is kernel-memory access, code execution, deadlock, oops, or panic.

The record

CVE
CVE-2026-64510
Published
Jul 25, 2026
Updated
Jul 25, 2026
Vendor
The Linux Kernel Organization
Product
Linux Kernel
Classifications
T1068
Attack vector
local
Privileges
authenticated

Timeline

How it unfolded

  1. Jul 25, 2026CVE publishedPublication date reported by the CVE source.
  2. Jul 25, 2026Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=4.6
  2. Affected versionversion=a61fe6f7902ecaa89d5e6c709490fc4324927134 <38bf27511ef41bffebd157ec3eba41fc89ba59cd
  3. Affected versionversion=a61fe6f7902ecaa89d5e6c709490fc4324927134 <3b2628f7682aea8d9ce09ad4b9a3bd144b451eaa
  4. Affected versionversion=a61fe6f7902ecaa89d5e6c709490fc4324927134 <6ff054cc02a763914773b026cacb429e5fbf64fa
  5. Affected versionversion=a61fe6f7902ecaa89d5e6c709490fc4324927134 <7d69235bdc581a4346e9bcd6a8bea37d3e1abd25
  6. Affected versionversion=a61fe6f7902ecaa89d5e6c709490fc4324927134 <b07d22a2d17ad6465c87bd5752bc70e4c16e0ee4
  7. Affected versionversion=a61fe6f7902ecaa89d5e6c709490fc4324927134 <c127dbd832bd4b9aef8a749d9f491b74042f9b47
  8. Affected versionversion=a61fe6f7902ecaa89d5e6c709490fc4324927134 <df7c92216a1583a76cb0cbf2f21cd68870609b05
  9. Affected versionversion=a61fe6f7902ecaa89d5e6c709490fc4324927134 <ee82078e776ae31266cc70fdf62ac17c3c6f100a

What conditions does exploitation require?

Attack vectorlocal
Required privilegesauthenticated

What is affected?

The Linux Kernel Organization · Linux Kernelversion=4.6; version=a61fe6f7902ecaa89d5e6c709490fc4324927134 <38bf27511ef41bffebd157ec3eba41fc89ba59cd; version=a61fe6f7902ecaa89d5e6c709490fc4324927134 <3b2628f7682aea8d9ce09ad4b9a3bd144b451eaa; version=a61fe6f7902ecaa89d5e6c709490fc4324927134 <6ff054cc02a763914773b026cacb429e5fbf64fa; version=a61fe6f7902ecaa89d5e6c709490fc4324927134 <7d69235bdc581a4346e9bcd6a8bea37d3e1abd25; version=a61fe6f7902ecaa89d5e6c709490fc4324927134 <b07d22a2d17ad6465c87bd5752bc70e4c16e0ee4; version=a61fe6f7902ecaa89d5e6c709490fc4324927134 <c127dbd832bd4b9aef8a749d9f491b74042f9b47; version=a61fe6f7902ecaa89d5e6c709490fc4324927134 <df7c92216a1583a76cb0cbf2f21cd68870609b05; version=a61fe6f7902ecaa89d5e6c709490fc4324927134 <ee82078e776ae31266cc70fdf62ac17c3c6f100a

Published CVSS scores

7.0kernel.orgCVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

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No observations available

Sep 10, 2026Sep 16, 2026
Latest reporting daySep 16, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectorlocal
Privilegesauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

T1068Exploitation for Privilege Escalation

Public exploit references

No public exploit references are available in this record.

Labels summarize the accepted research assessment. They do not indicate a test against your environment.

Technologies

Your stack

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Your stack

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