What is CVE-2025-37962?

CVE-2025-37962 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 6.13.11 onward. CVE-2025-37962 has not been confirmed as actively exploited and is not listed in the CISA KEV catalog.

What is the CVSS score for CVE-2025-37962?

CVE-2025-37962 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-2025-37962?

No patch is currently available for CVE-2025-37962. Monitor the NIST NVD and your Linux distribution's security advisories for updates.

Is CVE-2025-37962 actively exploited?

CVE-2025-37962 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-2025-37962

Medium

In the Linux kernel, the following vulnerability has been resolved: ksmbd: fix memory leak in parse_lease_state() The previous patch that added bounds check for create lease context introduced a memory leak. When the bounds check fails, the function returns NULL without freeing the previously allocated lease_ctx_info structure. This patch fixes the issue by adding kfree(lreq) before returning NULL in both boundary check cases.

Package Linux Kernel

Published 2025-05-20

Last modified 2025-12-16

CVSS version 3.1

Patch available

Not yet patched

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-2025-37962 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 6.13.11, 6.1.134, 6.6.87, 6.12.23, 6.14.2 and later are affected. No fixed version recorded yet.

Affected from

≥ 6.13.11 ≥ 6.1.134 ≥ 6.6.87 ≥ 6.12.23 ≥ 6.14.2

References

The following references provide additional information about CVE-2025-37962 including vendor advisories, patch commits, exploit details, and third-party analysis. Links are sourced from the NIST NVD database.

Debian Security
https://lists.debian.org/debian-lts-announce/2025/08/msg00010.html

Third Party Advisory
Kernel patch commit
https://git.kernel.org/stable/c/2148d34371b06dac696c0497a98a6bf905a51650
Patch
Kernel patch commit
https://git.kernel.org/stable/c/829e19ef741d9e9932abdc3bee5466195e0852cf
Patch
Kernel patch commit
https://git.kernel.org/stable/c/af9e2d4732a548db8f6f5a90c2c20a789a3d7240
Patch

5 patch commits total View all on NVD

Details

CVE ID CVE-2025-37962

Severity Medium

CVSS score 5.5 / 10

CVSS version 3.1

Published 2025-05-20

Modified 2025-12-16

KEV No

Patch

Not yet patched

Package linux

Frequently asked questions

What is CVE-2025-37962?

CVE-2025-37962 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 6.13.11 onward . CVE-2025-37962 has not been confirmed as actively exploited and is not listed in the CISA KEV catalog.
What is the CVSS score for CVE-2025-37962?

CVE-2025-37962 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-2025-37962?

No patch is currently available for CVE-2025-37962. Monitor the NIST NVD and your Linux distribution's security advisories for updates.
Is CVE-2025-37962 actively exploited?

No — CVE-2025-37962 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 →