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CVE-2023-32246

5.5 · MEDIUM

In the Linux kernel, the following vulnerability has been resolved: ksmbd: call rcu_barrier() in ksmbd_server_exit() racy issue is triggered the bug by racing between closing a connection and rmmod.

Published Aug 16, 2025EPSS 0.18%

Overview

CVE-2023-32246 is a medium-severity vulnerability. It was published on August 16, 2025 and has a CVSS 3.1 base score of 5.5 (MEDIUM).

This vulnerability has a CVSS 3.1 base score of 5.5, rated MEDIUM. It requires local or adjacent network access to exploit. Some level of privileges is required for exploitation.

Technical description

In the Linux kernel, the following vulnerability has been resolved:

ksmbd: call rcu_barrier() in ksmbd_server_exit()

racy issue is triggered the bug by racing between closing a connection

and rmmod. In ksmbd, rcu_barrier() is not called at module unload time,

so nothing prevents ksmbd from getting unloaded while it still has RCU

callbacks pending. It leads to trigger unintended execution of kernel

code locally and use to defeat protections such as Kernel Lockdown

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/5a7090ccc242ab009ee7769e9d7fad6644dbe9bdRefgit.kernel.org/stable/c/b80422474ffe44cb5e813cd6da1f1c6bc50fd9d2Refgit.kernel.org/stable/c/c053e389db0d892e2ff5a60ec5e533b976503795Refgit.kernel.org/stable/c/d4174505016a3b2996eb7ff1530dcabbf15d47b6Refgit.kernel.org/stable/c/eb307d09fe15844fdaebeb8cc8c9b9e925430aa5

How CyberStrike helps

Frequently asked questions

What is CVE-2023-32246?

CVE-2023-32246 is a medium-severity vulnerability. It was published on August 16, 2025 and has a CVSS 3.1 base score of 5.5 (MEDIUM).

How severe is CVE-2023-32246?

This vulnerability has a CVSS 3.1 base score of 5.5, rated MEDIUM. It requires local or adjacent network access to exploit. Some level of privileges is required for exploitation.

How do I fix or remediate CVE-2023-32246?

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-2023-32246?

CyberStrike is an open-source, AI-augmented pentesting engine. Rather than flag a version number, it tests whether an issue like CVE-2023-32246 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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