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CVE-2024-38629

7.8 · HIGH

In the Linux kernel, the following vulnerability has been resolved: dmaengine: idxd: Avoid unnecessary destruction of file_ida file_ida is allocated during cdev open and is freed accordingly duri…

Published Jun 21, 2024CWE-416EPSS 0.23%

Overview

CVE-2024-38629 is a high-severity vulnerability. It was published on June 21, 2024 and has a CVSS 3.1 base score of 7.8 (HIGH).

This vulnerability has a CVSS 3.1 base score of 7.8, rated HIGH. 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:

dmaengine: idxd: Avoid unnecessary destruction of file_ida

file_ida is allocated during cdev open and is freed accordingly

during cdev release. This sequence is guaranteed by driver file

operations. Therefore, there is no need to destroy an already empty

file_ida when the WQ cdev is removed.

Worse, ida_free() in cdev release may happen after destruction of

file_ida per WQ cdev. This can lead to accessing an id in file_ida

after it has been destroyed, resulting in a kernel panic.

Remove ida_destroy(&file_ida) to address these issues.

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/15edb906211bf53e7b5574f7326ab734d6bff4f9Refgit.kernel.org/stable/c/76e43fa6a456787bad31b8d0daeabda27351a480Refgit.kernel.org/stable/c/9eb15f24a0b9b017b39cde8b8c07243676b63687Refgit.kernel.org/stable/c/15edb906211bf53e7b5574f7326ab734d6bff4f9Refgit.kernel.org/stable/c/76e43fa6a456787bad31b8d0daeabda27351a480Refgit.kernel.org/stable/c/9eb15f24a0b9b017b39cde8b8c07243676b63687

How CyberStrike helps

Frequently asked questions

What is CVE-2024-38629?

CVE-2024-38629 is a high-severity vulnerability. It was published on June 21, 2024 and has a CVSS 3.1 base score of 7.8 (HIGH).

How severe is CVE-2024-38629?

This vulnerability has a CVSS 3.1 base score of 7.8, rated HIGH. It requires local or adjacent network access to exploit. Some level of privileges is required for exploitation.

How do I fix or remediate CVE-2024-38629?

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-2024-38629?

CyberStrike is an open-source, AI-augmented pentesting engine. Rather than flag a version number, it tests whether an issue like CVE-2024-38629 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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