Linux Kernel IRQ Handling Flaw in VC4 Driver

Publication date: 2026-05-05

Last updated on: 2026-06-01

Assigner: kernel.org

Description

In the Linux kernel, the following vulnerability has been resolved: drm/vc4: platform_get_irq_byname() returns an int platform_get_irq_byname() will return a negative value if an error happens, so it should be checked and not just passed directly into devm_request_threaded_irq() hoping all will be ok.

CVSS Scores

EPSS Scores

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Meta Information

Published

2026-05-05

Last Modified

2026-06-01

Generated

2026-07-06

AI Q&A

2026-05-05

EPSS Evaluated

2026-07-05

NVD

CVE-2026-43072

EUVD

EUVD-2026-27376

Affected Vendors & Products

Vendor	Product	Version / Range
linux	linux_kernel	From 6.13 (inc) to 6.18.24 (exc)
linux	linux_kernel	From 6.19 (inc) to 6.19.14 (exc)
linux	linux_kernel	From 7.0 (inc) to 7.0.1 (exc)
linux	linux_kernel	From 6.7 (inc) to 6.12.83 (exc)
linux	linux_kernel	From 5.15 (inc) to 6.6.136 (exc)

Helpful Resources

Exploitability

CWE

KEV

CWE ID	Description
CWE-UNKNOWN

Attack-Flow Graph

Executive Summary

This vulnerability is related to the Linux kernel's drm/vc4 component. The function platform_get_irq_byname() can return a negative value to indicate an error. However, this return value was not properly checked before being passed directly into devm_request_threaded_irq(). This improper handling could lead to unexpected behavior or errors in the kernel.

Impact Analysis

If the negative return value from platform_get_irq_byname() is not checked, it may cause devm_request_threaded_irq() to receive invalid input. This could result in kernel errors, instability, or crashes, potentially affecting system reliability.

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