CVE-2025-22116
📋 TL;DR
This CVE describes a kernel error handling flaw in the idpf (Intel Data Path Function) driver where failed network device registration isn't properly checked, leading to warning messages during cleanup. The vulnerability affects Linux systems using the idpf driver and could potentially cause system instability or crashes during driver operations.
💻 Affected Systems
- Linux kernel with idpf driver
📦 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...
Learn more about Linux Kernel →⚠️ Risk & Real-World Impact
Worst Case
System crash or kernel panic during driver removal operations, leading to denial of service and potential data loss.
Likely Case
Kernel warning messages and system logs filling with error traces, potentially causing performance degradation or system instability.
If Mitigated
Proper error logging and graceful handling of failed network device registration without system impact.
🎯 Exploit Status
Exploitation requires triggering specific driver initialization/removal sequences. Not a remote code execution vulnerability.
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: Linux kernel with commit 680811c67906191b237bbafe7dabbbad64649b39 or later
Vendor Advisory: https://git.kernel.org/stable/c/680811c67906191b237bbafe7dabbbad64649b39
Restart Required: Yes
Instructions:
1. Update Linux kernel to version containing the fix commit. 2. Rebuild kernel if compiling from source. 3. Reboot system to load patched kernel.
🔧 Temporary Workarounds
Disable idpf driver
linuxPrevent loading of vulnerable idpf driver module
echo 'blacklist idpf' >> /etc/modprobe.d/blacklist.conf
rmmod idpf
🧯 If You Can't Patch
- Monitor system logs for WARNING messages related to unregister_netdevice_many_notify
- Avoid unnecessary driver reloads or system operations that trigger idpf driver initialization/removal
🔍 How to Verify
Check if Vulnerable:
Check kernel version and if idpf module is loaded: lsmod | grep idpf && uname -rCheck Version:
uname -rVerify Fix Applied:
Verify kernel contains fix commit: git log --oneline | grep -i '680811c67906191b237bbafe7dabbbad64649b39' or check kernel changelog📡 Detection & Monitoring
Log Indicators:
- WARNING messages containing 'unregister_netdevice_many_notify'
- Kernel logs showing idpf driver errors during initialization
Network Indicators:
- None - this is a local kernel/driver issue
SIEM Query:
source="kernel" AND "unregister_netdevice_many_notify" AND "WARNING"