CVE-2024-26814

MEDIUM
Published Apr 5, 2024 Modified Mar 27, 2025 CWE-476

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.

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CVSS v3.1 Score

5.5
MEDIUM
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H

Weakness Type (CWE)

CWE-476 CWE-476

Affected Products

Vendor Product
linux linux_kernel
linux linux_kernel
linux linux_kernel
linux linux_kernel
linux linux_kernel
debian debian_linux

References

Advisories & Patches

https://git.kernel.org/stable/c/083e750c9f5f4c3bf61161330fb84d7c8e8bb417 https://git.kernel.org/stable/c/250219c6a556f8c69c5910fca05a59037e24147d https://git.kernel.org/stable/c/6ec0d88166dac43f29e96801c0927d514f17add9 https://git.kernel.org/stable/c/7447d911af699a15f8d050dfcb7c680a86f87012 https://git.kernel.org/stable/c/a563fc18583ca4f42e2fdd0c70c7c618288e7ede https://git.kernel.org/stable/c/de87511fb0404d23b6da5f4660383b6ed095e28d https://git.kernel.org/stable/c/ee0bd4ad780dfbb60355b99f25063357ab488267 https://git.kernel.org/stable/c/083e750c9f5f4c3bf61161330fb84d7c8e8bb417 https://git.kernel.org/stable/c/250219c6a556f8c69c5910fca05a59037e24147d https://git.kernel.org/stable/c/6ec0d88166dac43f29e96801c0927d514f17add9 https://git.kernel.org/stable/c/7447d911af699a15f8d050dfcb7c680a86f87012 https://git.kernel.org/stable/c/a563fc18583ca4f42e2fdd0c70c7c618288e7ede https://git.kernel.org/stable/c/de87511fb0404d23b6da5f4660383b6ed095e28d https://git.kernel.org/stable/c/ee0bd4ad780dfbb60355b99f25063357ab488267

Frequently Asked Questions

What is CVE-2024-26814? +
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. It has a CVSS v3.1 base score of 5.5 (MEDIUM).
How severe is CVE-2024-26814? +
CVE-2024-26814 has a CVSS v3.1 score of 5.5 out of 10, rated MEDIUM. This is a medium-severity vulnerability that should be remediated as part of regular maintenance.
What products are affected by CVE-2024-26814? +
CVE-2024-26814 affects products from debian, linux, specifically: debian_linux, linux_kernel. Check the affected products table above for specific version ranges.
How do I check if I'm vulnerable to CVE-2024-26814? +
You can use Secably's free Website Scanner to check your website for known vulnerabilities. For infrastructure scanning, use the Port Scanner to identify exposed services that may be affected. Check the vendor advisories linked above for specific patch and version information.

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