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CVE-2023-53374

8.8 · HIGH

In the Linux kernel, the following vulnerability has been resolved: Bluetooth: hci_conn: fail SCO/ISO via hci_conn_failed if ACL gone early Not calling hci_(dis)connect_cfm before deleting conn r…

Published Sep 18, 2025CWE-416EPSS 0.22%

Overview

CVE-2023-53374 is a high-severity vulnerability. It was published on September 18, 2025 and has a CVSS 3.1 base score of 8.8 (HIGH).

This vulnerability has a CVSS 3.1 base score of 8.8, rated HIGH. It requires local or adjacent network access to exploit. No authentication or special privileges are required for exploitation.

Technical description

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

Bluetooth: hci_conn: fail SCO/ISO via hci_conn_failed if ACL gone early

Not calling hci_(dis)connect_cfm before deleting conn referred to by a

socket generally results to use-after-free.

When cleaning up SCO connections when the parent ACL is deleted too

early, use hci_conn_failed to do the connection cleanup properly.

We also need to clean up ISO connections in a similar situation when

connecting has started but LE Create CIS is not yet sent, so do it too

here.

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/3344d318337d9dca928fd448e966557ec5063f85Refgit.kernel.org/stable/c/397d58007532644b35fad746da48c41161f32a57Refgit.kernel.org/stable/c/e94b898463a62b72a2a8b75dea8936bf4db78e00

How CyberStrike helps

Frequently asked questions

What is CVE-2023-53374?

CVE-2023-53374 is a high-severity vulnerability. It was published on September 18, 2025 and has a CVSS 3.1 base score of 8.8 (HIGH).

How severe is CVE-2023-53374?

This vulnerability has a CVSS 3.1 base score of 8.8, rated HIGH. It requires local or adjacent network access to exploit. No authentication or special privileges are required for exploitation.

How do I fix or remediate CVE-2023-53374?

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-2023-53374?

CyberStrike is an open-source, AI-augmented pentesting engine. Rather than flag a version number, it tests whether an issue like CVE-2023-53374 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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