What is CVE-2025-71150?

CVE-2025-71150 is a Medium severity Linux kernel vulnerability with a CVSS score of 5.5 out of 10, affecting Linux kernel versions from 5.15.176 onward and patched in 5.15.203, 6.1.160, 6.6.120 and others. CVE-2025-71150 has not been confirmed as actively exploited and is not listed in the CISA KEV catalog.

What is the CVSS score for CVE-2025-71150?

CVE-2025-71150 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-2025-71150?

Yes, CVE-2025-71150 has been patched. Fixed versions include 5.15.203, 6.1.160, 6.6.120 and others. If you are running Linux kernel 5.15.176 or later up to the fix versions, apply the relevant patch for your kernel branch.

Is CVE-2025-71150 actively exploited?

CVE-2025-71150 has not been confirmed as actively exploited and is not listed in the CISA KEV catalog.

CVE-2025-71150

Medium

In the Linux kernel, the following vulnerability has been resolved: ksmbd: Fix refcount leak when invalid session is found on session lookup When a session is found but its state is not SMB2_SESSION_VALID, It indicates that no valid session was found, but it is missing to decrement the reference count acquired by the session lookup, which results in a reference count leak. This patch fixes the issue by explicitly calling ksmbd_user_session_put to release the reference to the session.

Package Linux Kernel

Published 2026-01-23

Last modified 2026-04-18

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

Affected versions

Linux kernel versions 5.15.176, 6.1.121, 6.6.67, 6.12.6, 6.13 and later are affected. Fixed in 5.15.203, 6.1.160, 6.6.120, 6.12.64, 6.18.3, 6.19 and their respective stable series.

Affected from

≥ 5.15.176 ≥ 6.1.121 ≥ 6.6.67 ≥ 6.12.6 ≥ 6.13

Fixed in

✓ 5.15.203 5.15.x ✓ 6.1.160 6.1.x ✓ 6.6.120 6.6.x ✓ 6.12.64 6.12.x ✓ 6.18.3 6.18.x ✓ 6.19

References

The following references provide additional information about CVE-2025-71150 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/02e06785e85b4bd86ef3d23b7c8d87acc76773d5
Patch
Kernel patch commit
https://git.kernel.org/stable/c/0fb87b28cafae71e9c8248432cc3a6a1fd759efc
Patch
Kernel patch commit
https://git.kernel.org/stable/c/11fe566b442e3bc2774191740fd377739a87a1c0
Patch

6 patch commits total View all on NVD

Details

CVE ID CVE-2025-71150

Severity Medium

CVSS score 5.5 / 10

CVSS version 3.1

Published 2026-01-23

Modified 2026-04-18

KEV No

Patch

Yes

Package linux

Frequently asked questions

What is CVE-2025-71150?

CVE-2025-71150 is a Medium severity Linux kernel vulnerability with a CVSS score of 5.5 out of 10 . It affects Linux kernel versions from 5.15.176 onward and has been patched in 5.15.203, 6.1.160, 6.6.120 and others. CVE-2025-71150 has not been confirmed as actively exploited and is not listed in the CISA KEV catalog.
What is the CVSS score for CVE-2025-71150?

CVE-2025-71150 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-2025-71150?

Yes — CVE-2025-71150 has been patched. Fixed versions include 5.15.203, 6.1.160, 6.6.120 and others. If you are running Linux kernel 5.15.176 or later up to the fix versions, apply the relevant patch for your kernel branch.
Is CVE-2025-71150 actively exploited?

No — CVE-2025-71150 has not been confirmed as actively exploited. It is not listed in the CISA Known Exploited Vulnerabilities (KEV) catalog.