CVE-2024-57916 – A vulnerability in the Linux kernel's microchip... (How to Fix)

Q: What is the severity of CVE-2024-57916?

CVE-2024-57916 has a CVSS score of 5.5 (MEDIUM). A vulnerability in the Linux kernel's microchip PCI1XXXX GPIO driver causes kernel panics during interrupt request (IRQ) handling. This affects systems using this specific driver for GPIO operations, potentially leading to denial of service. The issue stems from improper IRQ handling when accessing GPIO values.

📋 TL;DR

A vulnerability in the Linux kernel's microchip PCI1XXXX GPIO driver causes kernel panics during interrupt request (IRQ) handling. This affects systems using this specific driver for GPIO operations, potentially leading to denial of service. The issue stems from improper IRQ handling when accessing GPIO values.

💻 Affected Systems

Products:

Linux kernel with microchip PCI1XXXX GPIO driver

Versions: Linux kernel versions containing the vulnerable driver code before the fix commits

Operating Systems: Linux distributions using affected kernel versions

Default Config Vulnerable: ⚠️ Yes

Notes: Only affects systems with the microchip PCI1XXXX hardware and driver loaded.

📦 What is this software?

Linux Kernel by Linux

The Linux Kernel is the core component of the Linux operating system, serving as the critical interface between computer hardware and software processes. As the heart of millions of servers, cloud infrastructure, embedded systems, Android devices, and IoT deployments worldwide, the Linux Kernel mana...

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Linux Kernel by Linux

The Linux Kernel is the core component of the Linux operating system, serving as the critical interface between computer hardware and software processes. As the heart of millions of servers, cloud infrastructure, embedded systems, Android devices, and IoT deployments worldwide, the Linux Kernel mana...

Learn more about Linux Kernel →

Linux Kernel by Linux

The Linux Kernel is the core component of the Linux operating system, serving as the critical interface between computer hardware and software processes. As the heart of millions of servers, cloud infrastructure, embedded systems, Android devices, and IoT deployments worldwide, the Linux Kernel mana...

Learn more about Linux Kernel →

Linux Kernel by Linux

The Linux Kernel is the core component of the Linux operating system, serving as the critical interface between computer hardware and software processes. As the heart of millions of servers, cloud infrastructure, embedded systems, Android devices, and IoT deployments worldwide, the Linux Kernel mana...

Learn more about Linux Kernel →

Linux Kernel by Linux

The Linux Kernel is the core component of the Linux operating system, serving as the critical interface between computer hardware and software processes. As the heart of millions of servers, cloud infrastructure, embedded systems, Android devices, and IoT deployments worldwide, the Linux Kernel mana...

Learn more about Linux Kernel →

Linux Kernel by Linux

The Linux Kernel is the core component of the Linux operating system, serving as the critical interface between computer hardware and software processes. As the heart of millions of servers, cloud infrastructure, embedded systems, Android devices, and IoT deployments worldwide, the Linux Kernel mana...

Learn more about Linux Kernel →

Linux Kernel by Linux

The Linux Kernel is the core component of the Linux operating system, serving as the critical interface between computer hardware and software processes. As the heart of millions of servers, cloud infrastructure, embedded systems, Android devices, and IoT deployments worldwide, the Linux Kernel mana...

Learn more about Linux Kernel →

Linux Kernel by Linux

The Linux Kernel is the core component of the Linux operating system, serving as the critical interface between computer hardware and software processes. As the heart of millions of servers, cloud infrastructure, embedded systems, Android devices, and IoT deployments worldwide, the Linux Kernel mana...

Learn more about Linux Kernel →

Linux Kernel by Linux

The Linux Kernel is the core component of the Linux operating system, serving as the critical interface between computer hardware and software processes. As the heart of millions of servers, cloud infrastructure, embedded systems, Android devices, and IoT deployments worldwide, the Linux Kernel mana...

Learn more about Linux Kernel →

⚠️ Risk & Real-World Impact

🔴

Worst Case

System crash/kernel panic leading to complete denial of service, requiring physical or remote reboot.

🟠

Likely Case

System instability or crashes when GPIO interrupts are triggered, affecting device functionality.

🟢

If Mitigated

Minor performance impact with proper IRQ handling; no security compromise.

🌐 Internet-Facing: LOW - Requires local access or specific hardware interaction to trigger.

🏢 Internal Only: MEDIUM - Could affect internal systems using the vulnerable driver, potentially disrupting operations.

🎯 Exploit Status

Public PoC: ✅ No

Weaponized: UNKNOWN

Unauthenticated Exploit: ✅ No

Complexity: MEDIUM

Exploitation requires triggering GPIO interrupts on affected hardware, typically requiring local access or specific hardware conditions.

🛠️ Fix & Mitigation

✅ Official Fix

Patch Version: Kernel versions with commits 194f9f94a5169547d682e9bbcc5ae6d18a564735, 25692750c0259c5b65afec467d97201a485e8a00, 47d3749ec0cb56b7b98917c190a8c10cb54216fd, or 79aef6187e16b2d32307c8ff610e9e04f7f86e1f

Vendor Advisory: https://lists.debian.org/debian-lts-announce/2025/03/msg00001.html

Restart Required: Yes

Instructions:

1. Update Linux kernel to patched version. 2. Reboot system. 3. Verify driver is using handle_nested_irq instead of generic_handle_irq.

🔧 Temporary Workarounds

Disable microchip PCI1XXXX GPIO driver

linux

Prevent loading of vulnerable driver module

echo 'blacklist pci1xxxx_gpio' >> /etc/modprobe.d/blacklist.conf
rmmod pci1xxxx_gpio

🧯 If You Can't Patch

Avoid using GPIO interrupt functionality on affected hardware
Implement monitoring for kernel panic events and have recovery procedures ready

🔍 How to Verify

Check if Vulnerable:

Check if pci1xxxx_gpio driver is loaded: lsmod | grep pci1xxxx_gpio

Check Version:

uname -r

Verify Fix Applied:

Check kernel version is patched: uname -r and verify against fixed commits

📡 Detection & Monitoring

Log Indicators:

Kernel panic messages in /var/log/kern.log or dmesg
GPIO IRQ related errors

Network Indicators:

None - local hardware issue

SIEM Query:

source="kernel" AND "panic" AND "gpio" OR "pci1xxxx"

📊 Metadata

CVE ID: CVE-2024-57916

CVSS v3 Score: 5.5 (MEDIUM)

CVSS Vector: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H

EPSS Score: 0.05% exploit probability (13.8th percentile)

Published: January 19, 2025

Last Updated: November 3, 2025

🔗 References

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