What is CVE-2026-23464?

CVE-2026-23464 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 6.8 onward and patched in 6.12.78, 6.18.20, 6.19.10 and others. CVE-2026-23464 has not been confirmed as actively exploited and is not listed in the CISA KEV catalog.

What is the CVSS score for CVE-2026-23464?

CVE-2026-23464 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-2026-23464?

Yes, CVE-2026-23464 has been patched. Fixed versions include 6.12.78, 6.18.20, 6.19.10 and others. If you are running Linux kernel 6.8 or later up to the fix versions, apply the relevant patch for your kernel branch.

Is CVE-2026-23464 actively exploited?

CVE-2026-23464 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-2026-23464

Medium

In the Linux kernel, the following vulnerability has been resolved: soc: microchip: mpfs: Fix memory leak in mpfs_sys_controller_probe() In mpfs_sys_controller_probe(), if of_get_mtd_device_by_node() fails, the function returns immediately without freeing the allocated memory for sys_controller, leading to a memory leak. Fix this by jumping to the out_free label to ensure the memory is properly freed. Also, consolidate the error handling for the mbox_request_channel() failure case to use the same label.

Package Linux Kernel

Published 2026-04-03

Last modified 2026-07-24

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-2026-23464 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 6.8 and later are affected. Fixed in 6.12.78, 6.18.20, 6.19.10, 7.0 and their respective stable series.

Affected from

≥ 6.8

Fixed in

✓ 6.12.78 6.12.x ✓ 6.18.20 6.18.x ✓ 6.19.10 6.19.x ✓ 7.0

References

4 total

Kernel Git
https://git.kernel.org/stable/c/17c84fb7cf3971cc621646185d785670e9530ca1

Patch
Kernel Git
https://git.kernel.org/stable/c/5a741f8cc6fe62542f955cd8d24933a1b6589cbd

Patch
Kernel Git
https://git.kernel.org/stable/c/da4b44c42f40501db35f5d0a6243708a061490a0

Patch
Kernel Git
https://git.kernel.org/stable/c/e3dd5cffba07de6574165a72851471cd42cc6d15

Patch

Details

CVE ID CVE-2026-23464

Severity Medium

CVSS score 5.5 / 10

CVSS version 3.1

Published 2026-04-03

Modified 2026-07-24

KEV No

Patch

Yes

Package linux

Frequently asked questions

What is CVE-2026-23464?

CVE-2026-23464 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 6.8 onward and has been patched in 6.12.78, 6.18.20, 6.19.10 and others. CVE-2026-23464 has not been confirmed as actively exploited and is not listed in the CISA KEV catalog.
What is the CVSS score for CVE-2026-23464?

CVE-2026-23464 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-2026-23464?

Yes. CVE-2026-23464 has been patched. Fixed versions include 6.12.78, 6.18.20, 6.19.10 and others. If you are running Linux kernel 6.8 or later up to the fix versions, apply the relevant patch for your kernel branch.
Is CVE-2026-23464 actively exploited?

No. CVE-2026-23464 has not been confirmed as actively exploited. It is not listed in the CISA Known Exploited Vulnerabilities (KEV) catalog.