What’s Vulnerable › Vulnerabilities

CVE-2025-40161: mailbox: zynqmp-ipi: Fix SGI cleanup on unbind

• Severity: unknown
• Exploited in the wild: not listed in CISA KEV
• EPSS: 0.2% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2025-11-12 · updated 2026-10-19

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.

Affected products

• Linux kernel: 6.10 — fixed in 6.18

How to fix

Upgrade to a fixed version: Linux kernel 6.18. Check the vendor advisory for mitigations.

References

• https://git.kernel.org/stable/c/1ee147efee68be00203b1fee6479911debb1edb2
• https://git.kernel.org/stable/c/32bf7c6e01f5ba17a53ba236a770bd0274cefdf4
• https://git.kernel.org/stable/c/bb160e791ab15b89188a7a19589b8e11f681bef3

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