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CVE-2024-40956

7.8 · HIGH

In the Linux kernel, the following vulnerability has been resolved: dmaengine: idxd: Fix possible Use-After-Free in irq_process_work_list Use list_for_each_entry_safe() to allow iterating through…

Published Jul 12, 2024CWE-416EPSS 0.27%

Overview

CVE-2024-40956 is a high-severity vulnerability. It was published on July 12, 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: Fix possible Use-After-Free in irq_process_work_list

Use list_for_each_entry_safe() to allow iterating through the list and

deleting the entry in the iteration process. The descriptor is freed via

idxd_desc_complete() and there's a slight chance may cause issue for

the list iterator when the descriptor is reused by another thread

without it being deleted from the 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/1b08bf5a17c66ab7dbb628df5344da53c8e7ab33Refgit.kernel.org/stable/c/83163667d881100a485b6c2daa30301b7f68d9b5Refgit.kernel.org/stable/c/a14968921486793f2a956086895c3793761309ddRefgit.kernel.org/stable/c/e3215deca4520773cd2b155bed164c12365149a7Refgit.kernel.org/stable/c/faa35db78b058a2ab6e074ee283f69fa398c36a8Refgit.kernel.org/stable/c/1b08bf5a17c66ab7dbb628df5344da53c8e7ab33Refgit.kernel.org/stable/c/83163667d881100a485b6c2daa30301b7f68d9b5Refgit.kernel.org/stable/c/a14968921486793f2a956086895c3793761309ddRefgit.kernel.org/stable/c/e3215deca4520773cd2b155bed164c12365149a7Refgit.kernel.org/stable/c/faa35db78b058a2ab6e074ee283f69fa398c36a8

How CyberStrike helps

Frequently asked questions

What is CVE-2024-40956?

CVE-2024-40956 is a high-severity vulnerability. It was published on July 12, 2024 and has a CVSS 3.1 base score of 7.8 (HIGH).

How severe is CVE-2024-40956?

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-2024-40956?

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-2024-40956?

CyberStrike is an open-source, AI-augmented pentesting engine. Rather than flag a version number, it tests whether an issue like CVE-2024-40956 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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