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CVE-2024-26814

5.5 · MEDIUM

In the Linux kernel, the following vulnerability has been resolved: vfio/fsl-mc: Block calling interrupt handler without trigger The eventfd_ctx trigger pointer of the vfio_fsl_mc_irq object is i…

Published Apr 5, 2024CWE-476EPSS 0.22%

Overview

CVE-2024-26814 is a medium-severity vulnerability. It was published on April 5, 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:

vfio/fsl-mc: Block calling interrupt handler without trigger

The eventfd_ctx trigger pointer of the vfio_fsl_mc_irq object is

initially NULL and may become NULL if the user sets the trigger

eventfd to -1. The interrupt handler itself is guaranteed that

trigger is always valid between request_irq() and free_irq(), but

the loopback testing mechanisms to invoke the handler function

need to test the trigger. The triggering and setting ioctl paths

both make use of igate and are therefore mutually exclusive.

The vfio-fsl-mc driver does not make use of irqfds, nor does it

support any sort of masking operations, therefore unlike vfio-pci

and vfio-platform, the flow can remain essentially unchanged.

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/083e750c9f5f4c3bf61161330fb84d7c8e8bb417Refgit.kernel.org/stable/c/250219c6a556f8c69c5910fca05a59037e24147dRefgit.kernel.org/stable/c/6ec0d88166dac43f29e96801c0927d514f17add9Refgit.kernel.org/stable/c/7447d911af699a15f8d050dfcb7c680a86f87012Refgit.kernel.org/stable/c/a563fc18583ca4f42e2fdd0c70c7c618288e7edeRefgit.kernel.org/stable/c/de87511fb0404d23b6da5f4660383b6ed095e28dRefgit.kernel.org/stable/c/ee0bd4ad780dfbb60355b99f25063357ab488267Refgit.kernel.org/stable/c/083e750c9f5f4c3bf61161330fb84d7c8e8bb417Refgit.kernel.org/stable/c/250219c6a556f8c69c5910fca05a59037e24147dRefgit.kernel.org/stable/c/6ec0d88166dac43f29e96801c0927d514f17add9

How CyberStrike helps

Frequently asked questions

What is CVE-2024-26814?

CVE-2024-26814 is a medium-severity vulnerability. It was published on April 5, 2024 and has a CVSS 3.1 base score of 5.5 (MEDIUM).

How severe is CVE-2024-26814?

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-2024-26814?

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-2024-26814?

CyberStrike is an open-source, AI-augmented pentesting engine. Rather than flag a version number, it tests whether an issue like CVE-2024-26814 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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