What is CVE-2025-38405?

CVE-2025-38405 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 6.10.10 onward and patched in 6.12.37, 6.15.6 and 6.16. CVE-2025-38405 has not been confirmed as actively exploited and is not listed in the CISA KEV catalog.

What is the CVSS score for CVE-2025-38405?

CVE-2025-38405 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-2025-38405?

Yes, CVE-2025-38405 has been patched. Fixed versions include 6.12.37, 6.15.6 and 6.16. If you are running Linux kernel 6.10.10 or later up to the fix versions, apply the relevant patch for your kernel branch.

Is CVE-2025-38405 actively exploited?

CVE-2025-38405 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-2025-38405

Medium

In the Linux kernel, the following vulnerability has been resolved: nvmet: fix memory leak of bio integrity If nvmet receives commands with metadata there is a continuous memory leak of kmalloc-128 slab or more precisely bio->bi_integrity. Since commit bf4c89fc8797 ("block: don't call bio_uninit from bio_endio") each user of bio_init has to use bio_uninit as well. Otherwise the bio integrity is not getting free. Nvmet uses bio_init for inline bios. Uninit the inline bio to complete deallocation of integrity in bio.

Package Linux Kernel

Published 2025-07-25

Last modified 2025-11-19

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-2025-38405 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 6.10.10, 6.11 and later are affected. Fixed in 6.12.37, 6.15.6, 6.16 and their respective stable series.

Affected from

≥ 6.10.10 ≥ 6.11

Fixed in

✓ 6.12.37 6.12.x ✓ 6.15.6 6.15.x ✓ 6.16

References

The following references provide additional information about CVE-2025-38405 including vendor advisories, patch commits, exploit details, and third-party analysis. Links are sourced from the NIST NVD database.

Kernel patch commit
https://git.kernel.org/stable/c/190f4c2c863af7cc5bb354b70e0805f06419c038
Patch
Kernel patch commit
https://git.kernel.org/stable/c/2e2028fcf924d1c6df017033c8d6e28b735a0508
Patch
Kernel patch commit
https://git.kernel.org/stable/c/431e58d56fcb5ff1f9eb630724a922e0d2a941df
Patch

Details

CVE ID CVE-2025-38405

Severity Medium

CVSS score 5.5 / 10

CVSS version 3.1

Published 2025-07-25

Modified 2025-11-19

KEV No

Patch

Yes

Package linux

Frequently asked questions

What is CVE-2025-38405?

CVE-2025-38405 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 6.10.10 onward and has been patched in 6.12.37, 6.15.6 and 6.16. CVE-2025-38405 has not been confirmed as actively exploited and is not listed in the CISA KEV catalog.
What is the CVSS score for CVE-2025-38405?

CVE-2025-38405 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-2025-38405?

Yes — CVE-2025-38405 has been patched. Fixed versions include 6.12.37, 6.15.6 and 6.16. If you are running Linux kernel 6.10.10 or later up to the fix versions, apply the relevant patch for your kernel branch.
Is CVE-2025-38405 actively exploited?

No — CVE-2025-38405 has not been confirmed as actively exploited. It is not listed in the CISA Known Exploited Vulnerabilities (KEV) catalog.
What is Memory Leak (CWE-401)?

The product does not release memory after use, causing gradual resource exhaustion. View CWE-401 on MITRE CWE →