Bug 2414470 (CVE-2025-40161)

Summary: CVE-2025-40161 kernel: mailbox: zynqmp-ipi: Fix SGI cleanup on unbind
Product: [Other] Security Response Reporter: OSIDB Bzimport <bzimport>
Component: vulnerabilityAssignee: Product Security DevOps Team <prodsec-dev>
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OS: Linux   
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Description OSIDB Bzimport 2025-11-12 11:01:46 UTC 
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.
Comment 1 Jon Moroney 2025-11-13 16:48:06 UTC 
Upstream advisory:
https://lore.kernel.org/linux-cve-announce/2025111239-CVE-2025-40161-8d13@gregkh/T