Bug 2466773 (CVE-2026-43072)

Summary: CVE-2026-43072 kernel: drm/vc4: platform_get_irq_byname() returns an int
Product: [Other] Security Response Reporter: OSIDB Bzimport <bzimport>
Component: vulnerabilityAssignee: Product Security <prodsec-ir-bot>
Status: NEW --- QA Contact:
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Version: unspecifiedCC: rhel-process-autobot, watson-tool-maintainers
Target Milestone: ---Keywords: Security
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Hardware: All   
OS: Linux   
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Doc Text:
A flaw was found in the `drm/vc4` component of the Linux kernel. The `platform_get_irq_byname()` function, which returns an integer that can indicate an error, was not properly validated before being passed to `devm_request_threaded_irq()`. This oversight in error handling could potentially lead to system instability or resource exhaustion, resulting in a denial of service (DoS).
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Description OSIDB Bzimport 2026-05-05 17:01:46 UTC 
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.
Comment 1 Alexander B 2026-05-06 10:00:19 UTC 
Upstream advisory:
https://lore.kernel.org/linux-cve-announce/2026050558-CVE-2026-43072-5f04@gregkh/T