What is CVE-2026-64013?

CVE-2026-64013 is a Medium severity Linux kernel vulnerability with a CVSS score of 5.5 out of 10, classified as a Memory Leak flaw (CWE-401), affecting Linux kernel versions from 6.15 onward and patched in 6.18.57, 7.0.12 and 7.1. CVE-2026-64013 has not been confirmed as actively exploited and is not listed in the CISA KEV catalog.

What is the CVSS score for CVE-2026-64013?

CVE-2026-64013 has a CVSS score of 5.5 out of 10, rated Medium severity. The vector string is CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H.

Is there a patch available for CVE-2026-64013?

Yes, CVE-2026-64013 has been patched. Fixed versions include 6.18.57, 7.0.12 and 7.1. If you are running Linux kernel 6.15 or later up to the fix versions, apply the relevant patch for your kernel branch.

Is CVE-2026-64013 actively exploited?

CVE-2026-64013 has not been confirmed as actively exploited and is not listed in the CISA KEV catalog.

What is Memory Leak (CWE-401)?

The product does not release memory after use, causing gradual resource exhaustion. See MITRE CWE for full details: https://cwe.mitre.org/data/definitions/401.html

CVE-2026-64013

Medium

In the Linux kernel, the following vulnerability has been resolved: ACPI: button: Fix ACPI GPE handler leak during removal Commit a7e23ec17fee ("ACPI: button: Install notifier for system events as well") changed the ACPI notify handler type for ACPI buttons to ACPI_ALL_NOTIFY, but it forgot to update acpi_button_remove() to reflect that change. This leads to leaking the notify handler past driver removal, which may cause a kernel crash to occur if ACPI notify on the given device is triggered after removing the driver, and causes a subsequent probe of the given device with the same driver to fail. Address this by updating the acpi_remove_notify_handler() call in acpi_button_remove() as appropriate.

Package Linux Kernel

Published 2026-07-19

Last modified 2026-10-15

CVSS version 3.1

Patch available

Yes

CVSS 3.1 score

5.5

out of 10

Medium

Attack Vector

Local

Attack Complexity

Low

Privileges Required

Low

User Interaction

None

Scope

Unchanged

Confidentiality

Low

Integrity

None

Availability

High

Vector string

CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H

Weakness type

CWE-401

CVE-2026-64013 is a Memory Leak vulnerability

What is Memory Leak?

The product does not release memory after use, causing gradual resource exhaustion. Learn more on MITRE CWE

Affected versions

Linux kernel versions 6.15 and later are affected. Fixed in 6.18.57, 7.0.12, 7.1 and their respective stable series.

Affected from

≥ 6.15

Fixed in

✓ 6.18.57 6.18.x ✓ 7.0.12 7.0.x ✓ 7.1

References

3 total

Kernel Git
https://git.kernel.org/stable/c/614cb8c26c5aa53196ee9b211b76ee618b147d32

Patch
Kernel Git
https://git.kernel.org/stable/c/fe80251152fed5b185f795ef2cd9f7fe9c3162e0

Patch
Kernel Git
https://git.kernel.org/stable/c/c85f325d9ec3116b0d4ee9d5b76c26aea0ad5ce0

Details

CVE ID CVE-2026-64013

Severity Medium

CVSS score 5.5 / 10

CVSS version 3.1

Published 2026-07-19

Modified 2026-10-15

KEV No

Patch

Yes

Package linux

Frequently asked questions

What is CVE-2026-64013?

CVE-2026-64013 is a Medium severity Linux kernel vulnerability with a CVSS score of 5.5 out of 10 , classified as a Memory Leak flaw (CWE-401) . It affects Linux kernel versions from 6.15 onward and has been patched in 6.18.57, 7.0.12 and 7.1. CVE-2026-64013 has not been confirmed as actively exploited and is not listed in the CISA KEV catalog.
What is the CVSS score for CVE-2026-64013?

CVE-2026-64013 has a CVSS score of 5.5 out of 10, rated Medium severity (CVSS 3.1). The vector string is CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H.
Is there a patch available for CVE-2026-64013?

Yes. CVE-2026-64013 has been patched. Fixed versions include 6.18.57, 7.0.12 and 7.1. If you are running Linux kernel 6.15 or later up to the fix versions, apply the relevant patch for your kernel branch.
Is CVE-2026-64013 actively exploited?

No. CVE-2026-64013 has not been confirmed as actively exploited. It is not listed in the CISA Known Exploited Vulnerabilities (KEV) catalog.