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.

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).

Red Hat Enterprise Linux 10 Not affected kernel Red Hat Enterprise Linux 6 Not affected kernel Red Hat Enterprise Linux 7 Not affected kernel Red Hat Enterprise Linux 7 Not affected kernel-rt Red Hat Enterprise Linux 8 Not affected kernel Red Hat Enterprise Linux 8 Not affected kernel-rt Red Hat Enterprise Linux 9 Not affected kernel Red Hat Enterprise Linux 9 Not affected kernel-rt https://www.cve.org/CVERecord?id=CVE-2026-43072 https://nvd.nist.gov/vuln/detail/CVE-2026-43072 https://lore.kernel.org/linux-cve-announce/2026050558-CVE-2026-43072-5f04@gregkh/T