CVE-2025-37815 misc: microchip: pci1xxxx: Fix Kernel panic during IRQ handler registration

What is CVE-2025-37815?

CVE-2025-37815 is a medium-severity vulnerability in Linux kernel, published on 8 May 2025. It can only be exploited from the same machine or local network, with no action from the victim.

Official description

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

misc: microchip: pci1xxxx: Fix Kernel panic during IRQ handler registration

Resolve kernel panic while accessing IRQ handler associated with the generated IRQ. This is done by acquiring the spinlock and storing the current interrupt state before handling the interrupt request using generic_handle_irq.

A previous fix patch was submitted where 'generic_handle_irq' was replaced with 'handle_nested_irq'. However, this change also causes the kernel panic where after determining which GPIO triggered the interrupt and attempting to call handle_nested_irq with the mapped IRQ number, leads to a failure in locating the registered handler.

Which versions are affected by CVE-2025-37815?

It affects 1 product.

Products include Linux kernel.

How do I fix CVE-2025-37815?

Apply the vendor's patch.

Is CVE-2025-37815 being exploited?

There is no known exploitation of CVE-2025-37815 in the wild and no public exploit code.

Other vulnerabilities in Linux kernel

• CVE-2026-53266 Linux Kernel Out-of-Bounds Write Exploited High 8.8
• CVE-2013-6282 Linux Kernel Improper Input Validation Exploited High 8.8
• CVE-2022-0185 Linux Kernel Heap-Based Buffer Overflow Exploited High 8.4
• CVE-2013-2094 Linux Kernel Privilege Escalation Exploited High 8.4
• CVE-2026-53362 Linux Kernel Unspecified Exploited High 7.8

All Linux kernel vulnerabilities

Sources

• CVE record
• NVD
• OSV
• GitHub advisory
• How this page is made

Also known as BELL-CVE-2025-37815, DEBIAN-CVE-2025-37815, GHSA-3c86-6wjp-hf8m, ROOT-OS-DEBIAN-12-CVE-2025-37815, ROOT-OS-UBUNTU-2404-CVE-2025-37815, UBUNTU-CVE-2025-37815.