What is CVE-2025-38386?

CVE-2025-38386 is a Medium severity Linux kernel vulnerability with a CVSS score of 5.5 out of 10, classified as a Use After Free flaw (CWE-416), affecting Linux kernel versions from 2.6.12 onward and patched in 5.4.296, 5.10.240, 5.15.187 and others. CVE-2025-38386 has not been confirmed as actively exploited and is not listed in the CISA KEV catalog.

What is the CVSS score for CVE-2025-38386?

CVE-2025-38386 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-2025-38386?

Yes, CVE-2025-38386 has been patched. Fixed versions include 5.4.296, 5.10.240, 5.15.187 and others. If you are running Linux kernel 2.6.12 or later up to the fix versions, apply the relevant patch for your kernel branch.

Is CVE-2025-38386 actively exploited?

CVE-2025-38386 has not been confirmed as actively exploited and is not listed in the CISA KEV catalog.

What is Use After Free (CWE-416)?

The product references memory after it has been freed, which may cause it to crash, use unexpected values, or execute code. See MITRE CWE for full details: https://cwe.mitre.org/data/definitions/416.html

CVE-2025-38386

Medium

In the Linux kernel, the following vulnerability has been resolved: ACPICA: Refuse to evaluate a method if arguments are missing As reported in [1], a platform firmware update that increased the number of method parameters and forgot to update a least one of its callers, caused ACPICA to crash due to use-after-free. Since this a result of a clear AML issue that arguably cannot be fixed up by the interpreter (it cannot produce missing data out of thin air), address it by making ACPICA refuse to evaluate a method if the caller attempts to pass fewer arguments than expected to it.

Package Linux Kernel

Published 2025-07-25

Last modified 2025-12-16

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-416

CVE-2025-38386 is a Use After Free vulnerability

What is Use After Free?

The product references memory after it has been freed, which may cause it to crash, use unexpected values, or execute code. Learn more on MITRE CWE

Affected versions

Linux kernel versions 2.6.12 and later are affected. Fixed in 5.4.296, 5.10.240, 5.15.187, 6.1.144, 6.6.97, 6.12.37, 6.15.6, 6.16 and their respective stable series.

Affected from

≥ 2.6.12

Fixed in

✓ 5.4.296 5.4.x ✓ 5.10.240 5.10.x ✓ 5.15.187 5.15.x ✓ 6.1.144 6.1.x ✓ 6.6.97 6.6.x ✓ 6.12.37 6.12.x ✓ 6.15.6 6.15.x ✓ 6.16

References

10 total

Kernel Git
https://git.kernel.org/stable/c/18ff4ed6a33a7e3f2097710eacc96bea7696e803

Patch
Kernel Git
https://git.kernel.org/stable/c/2219e49857ffd6aea1b1ca5214d3270f84623a16

Patch
Kernel Git
https://git.kernel.org/stable/c/4305d936abde795c2ef6ba916de8f00a50f64d2d

Patch
Kernel Git
https://git.kernel.org/stable/c/6fcab2791543924d438e7fa49276d0998b0a069f

Patch
Kernel Git
https://git.kernel.org/stable/c/ab1e8491c19eb2ea0fda81ef28e841c7cb6399f5

Patch

Showing 5 of 10 references View all on NVD

Details

CVE ID CVE-2025-38386

Severity Medium

CVSS score 5.5 / 10

CVSS version 3.1

Published 2025-07-25

Modified 2025-12-16

KEV No

Patch

Yes

Package linux

Frequently asked questions

What is CVE-2025-38386?

CVE-2025-38386 is a Medium severity Linux kernel vulnerability with a CVSS score of 5.5 out of 10 , classified as an Use After Free flaw (CWE-416) . It affects Linux kernel versions from 2.6.12 onward and has been patched in 5.4.296, 5.10.240, 5.15.187 and others. CVE-2025-38386 has not been confirmed as actively exploited and is not listed in the CISA KEV catalog.
What is the CVSS score for CVE-2025-38386?

CVE-2025-38386 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-2025-38386?

Yes. CVE-2025-38386 has been patched. Fixed versions include 5.4.296, 5.10.240, 5.15.187 and others. If you are running Linux kernel 2.6.12 or later up to the fix versions, apply the relevant patch for your kernel branch.
Is CVE-2025-38386 actively exploited?

No. CVE-2025-38386 has not been confirmed as actively exploited. It is not listed in the CISA Known Exploited Vulnerabilities (KEV) catalog.