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CVE-2025-37924

9.8 · CRITICAL

In the Linux kernel, the following vulnerability has been resolved: ksmbd: fix use-after-free in kerberos authentication Setting sess->user = NULL was introduced to fix the dangling pointer creat…

Published May 20, 2025CWE-416EPSS 22.05%

Overview

CVE-2025-37924 is a critical-severity vulnerability. It was published on May 20, 2025 and has a CVSS 3.1 base score of 9.8 (CRITICAL).

This vulnerability has a CVSS 3.1 base score of 9.8, rated CRITICAL. 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 use-after-free in kerberos authentication

Setting sess->user = NULL was introduced to fix the dangling pointer

created by ksmbd_free_user. However, it is possible another thread could

be operating on the session and make use of sess->user after it has been

passed to ksmbd_free_user but before sess->user is set to NULL.

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/28c756738af44a404a91b77830d017bb0c525890Refgit.kernel.org/stable/c/b447463562238428503cfba1c913261047772f90Refgit.kernel.org/stable/c/e18c616718018dfc440e4a2d2b94e28fe91b1861Refgit.kernel.org/stable/c/e34a33d5d7e87399af0a138bb32f6a3e95dd83d2Refgit.kernel.org/stable/c/e86e9134e1d1c90a960dd57f59ce574d27b9a124Reflists.debian.org/debian-lts-announce/2025/08/msg00010.html

How CyberStrike helps

Frequently asked questions

What is CVE-2025-37924?

CVE-2025-37924 is a critical-severity vulnerability. It was published on May 20, 2025 and has a CVSS 3.1 base score of 9.8 (CRITICAL).

How severe is CVE-2025-37924?

This vulnerability has a CVSS 3.1 base score of 9.8, rated CRITICAL. It can be exploited remotely over the network. No authentication or special privileges are required for exploitation.

How do I fix or remediate CVE-2025-37924?

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-2025-37924?

CyberStrike is an open-source, AI-augmented pentesting engine. Rather than flag a version number, it tests whether an issue like CVE-2025-37924 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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