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CVE-2024-41063

5.5 · MEDIUM

In the Linux kernel, the following vulnerability has been resolved: Bluetooth: hci_core: cancel all works upon hci_unregister_dev() syzbot is reporting that calling hci_release_dev() from hci_err…

Published Jul 29, 2024CWE-667EPSS 0.18%

Overview

CVE-2024-41063 is a medium-severity vulnerability. It was published on July 29, 2024 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:

Bluetooth: hci_core: cancel all works upon hci_unregister_dev()

syzbot is reporting that calling hci_release_dev() from hci_error_reset()

due to hci_dev_put() from hci_error_reset() can cause deadlock at

destroy_workqueue(), for hci_error_reset() is called from

hdev->req_workqueue which destroy_workqueue() needs to flush.

We need to make sure that hdev->{rx_work,cmd_work,tx_work} which are

queued into hdev->workqueue and hdev->{power_on,error_reset} which are

queued into hdev->req_workqueue are no longer running by the moment

destroy_workqueue(hdev->workqueue);

destroy_workqueue(hdev->req_workqueue);

are called from hci_release_dev().

Call cancel_work_sync() on these work items from hci_unregister_dev()

as soon as hdev->list is removed from hci_dev_list.

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/0d151a103775dd9645c78c97f77d6e2a5298d913Refgit.kernel.org/stable/c/3f939bd73fed12dddc2a32a76116c19ca47c7678Refgit.kernel.org/stable/c/48542881997e17b49dc16b93fe910e0cfcf7a9f9Refgit.kernel.org/stable/c/96600c2e5ee8213dbab5df1617293d8e847bb4faRefgit.kernel.org/stable/c/9cfc84b1d464cc024286f42a090718f9067b80edRefgit.kernel.org/stable/c/d2ce562a5aff1dcd0c50d9808ea825ef90da909fRefgit.kernel.org/stable/c/d6cbce18370641a21dd889e8613d8153df15eb39Refgit.kernel.org/stable/c/ddeda6ca5f218b668b560d90fc31ae469adbfd92Refgit.kernel.org/stable/c/0d151a103775dd9645c78c97f77d6e2a5298d913Refgit.kernel.org/stable/c/3f939bd73fed12dddc2a32a76116c19ca47c7678

How CyberStrike helps

Frequently asked questions

What is CVE-2024-41063?

CVE-2024-41063 is a medium-severity vulnerability. It was published on July 29, 2024 and has a CVSS 3.1 base score of 5.5 (MEDIUM).

How severe is CVE-2024-41063?

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-2024-41063?

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-2024-41063?

CyberStrike is an open-source, AI-augmented pentesting engine. Rather than flag a version number, it tests whether an issue like CVE-2024-41063 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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