Integer Underflow Vulnerability in Linux Kernel - i40e Package
Summary
CVE-2025-38200: In the Linux kernel, the following vulnerability has been resolved: i40e: fix MMIO write access to an invalid page in i40e_clear_hw When the device sends a specific input, an integer underflow can occur, leading to MMIO... Affects linux versions 5.10.103-1 – 6.9.9-1. No fix is published. How to fix ↓
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Background
The Linux kernel is a core component of the operating system that manages hardware and system resources. It provides essential services for all other parts of the operating system and is crucial for system stability and performance. The i40e driver is responsible for Intel Ethernet devices, facilitating communication between the operating system and the hardware. This vulnerability affects the i40e driver, which is integral for network operations, making it critical to address.
Vulnerability Detail
In the Linux kernel, a vulnerability has been identified in the i40e driver where an integer underflow can occur when the device processes specific input. This underflow can lead to Memory-Mapped Input/Output (MMIO) write access to an invalid page, potentially causing system instability or crashes. The issue arises from improper handling of variable types, which can allow malicious actors to exploit this flaw.
How To Fix
No fixed version is published for this vulnerability.
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Workaround
Currently, there are no specific workarounds mentioned for this vulnerability. It is recommended to apply the patch as soon as it becomes available to mitigate any risks associated with the integer underflow.
Conclusion
The CVE-2025-38200 vulnerability in the Linux kernel's i40e driver poses significant risks due to an integer underflow that can lead to MMIO write access to invalid memory pages. Users are advised to update their systems promptly to the patched version of the Linux kernel to ensure security and stability.
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FAQ
CVE-2025-38200 is a vulnerability in the Linux kernel's i40e driver that can lead to an integer underflow, causing MMIO write access to an invalid page.
You can use Vulert, which monitors and alerts for open-source vulnerabilities in your software. Visit Vulert Scanner to check if your application is affected by this vulnerability.
Exploitation of this vulnerability could lead to system instability, crashes, or unauthorized access to system resources.
Yes, a patch has been released for the Linux kernel that addresses this vulnerability. Users are encouraged to update their systems to the latest version.
While there are no specific workarounds, it is crucial to prioritize updating your system to mitigate risks associated with this vulnerability.
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