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CVE-2025-71150

7.5 · HIGH

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_SESS…

Published Jan 23, 2026EPSS 0.27%

Overview

CVE-2025-71150 is a high-severity vulnerability. It was published on January 23, 2026 and has a CVSS 3.1 base score of 7.5 (HIGH).

This vulnerability has a CVSS 3.1 base score of 7.5, rated HIGH. It can be exploited remotely over the network. No authentication or special privileges are required for exploitation.

Technical description

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.

Remediation

Check the references section for vendor advisories, patches, and mitigation guidance. If immediate patching is not possible, review the CVSS vector to understand the attack surface and apply compensating controls such as network segmentation or access restrictions.

References

Refgit.kernel.org/stable/c/02e06785e85b4bd86ef3d23b7c8d87acc76773d5Refgit.kernel.org/stable/c/0fb87b28cafae71e9c8248432cc3a6a1fd759efcRefgit.kernel.org/stable/c/11fe566b442e3bc2774191740fd377739a87a1c0Refgit.kernel.org/stable/c/8cabcb4dd3dc85dd83a37d26efcc59a66a4074d7Refgit.kernel.org/stable/c/cafb57f7bdd57abba87725eb4e82bbdca4959644Refgit.kernel.org/stable/c/e54fb2a4772545701766cba08aab20de5eace8cd

How CyberStrike helps

Frequently asked questions

What is CVE-2025-71150?

CVE-2025-71150 is a high-severity vulnerability. It was published on January 23, 2026 and has a CVSS 3.1 base score of 7.5 (HIGH).

How severe is CVE-2025-71150?

This vulnerability has a CVSS 3.1 base score of 7.5, rated HIGH. It can be exploited remotely over the network. No authentication or special privileges are required for exploitation.

How do I fix or remediate CVE-2025-71150?

Check the references section for vendor advisories, patches, and mitigation guidance. If immediate patching is not possible, review the CVSS vector to understand the attack surface and apply compensating controls such as network segmentation or access restrictions.

How can CyberStrike help with CVE-2025-71150?

CyberStrike is an open-source, AI-augmented pentesting engine. Rather than flag a version number, it tests whether an issue like CVE-2025-71150 is actually reachable in your own applications and APIs, then verifies each finding before reporting it. That tells you if the weakness is a real, exploitable risk in your environment or a false positive you can safely deprioritize.

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