CVE-2025-40161

kernel: mailbox: zynqmp-ipi: Fix SGI cleanup on unbind

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Severity

Unknown

Red Hat Product Security

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CVSS

Review impact separately from score.

Published · November 12, 2025

Updated · June 30, 2026

Description

In the Linux kernel, the following vulnerability has been resolved:

mailbox: zynqmp-ipi: Fix SGI cleanup on unbind

The driver incorrectly determines SGI vs SPI interrupts by checking IRQ number < 16, which fails with dynamic IRQ allocation. During unbind, this causes improper SGI cleanup leading to kernel crash.

Add explicit irq_type field to pdata for reliable identification of SGI interrupts (type-2) and only clean up SGI resources when appropriate.

Mitigation

No mitigation is specified in collected source.

CVSS / CWE

CWE not specified