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Vulnerability DatabaseCVE-2025-38200

CVE-2025-38200: 
Linux Kernel vulnerability analysis and mitigation

Overview

CVE-2025-38200 is a vulnerability discovered in the Linux kernel, specifically affecting the i40e network driver component. The vulnerability was disclosed on July 4, 2025, and involves an integer underflow issue in the i40eclearhw function (NVD).

Technical details

The vulnerability occurs in the i40eclearhw function when the device sends specific input that can trigger an integer underflow condition. This underflow leads to MMIO write access to an invalid memory page. The issue stems from improper type handling of certain variables in the driver code (NVD).

Impact

The vulnerability affects multiple Linux distributions and versions, including Ubuntu 22.04 LTS, 24.04 LTS, and 25.04, as well as Debian bullseye, bookworm, and trixie releases. Various kernel packages are impacted, including mainline Linux kernel, linux-aws, linux-azure, and other specialized kernel variants (Ubuntu, Debian).

Mitigation and workarounds

The vulnerability has been resolved by changing the type of related variables to prevent the integer underflow condition. Fixed versions are available in some distributions - Debian trixie (6.12.35-1) and sid (6.12.37-1) contain the fix (Debian).

Additional resources

Source: This report was generated using AI

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