What’s Vulnerable › Vulnerabilities

CVE-2025-38200: i40e: fix MMIO write access to an invalid page in i40e_clear_hw

• Severity: medium (CVSS 5.5 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 0.2% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2025-07-04 · updated 2026-06-17
• Weakness: CWE-191

Description

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 write access to an invalid page. Prevent the integer underflow by changing the type of related variables.

Affected products

• Debian Linux: 11.0
• Linux kernel: from 3.12 before 5.4.295; from 5.5 before 5.10.239; from 5.11 before 5.15.186; from 5.16 before 6.1.142; from 6.2 before 6.6.95; from 6.7 before 6.12.35 — fixed in 5.10.239, 5.15.186, 5.4.295, 6.1.142, 6.12.35, 6.15.4

How to fix

Upgrade to a fixed version: Linux kernel 5.10.239, 5.15.186, 5.4.295, 6.1.142. Check the vendor advisory for mitigations.

References

• https://git.kernel.org/stable/c/015bac5daca978448f2671478c553ce1f300c21e
• https://git.kernel.org/stable/c/2a1f4f2e36442a9bdf771acf6ee86f3cf876e5ca
• https://git.kernel.org/stable/c/3502dd42f178dae9d54696013386bb52b4f2e655
• https://git.kernel.org/stable/c/5e75c9082987479e647c75ec8fdf18fa68263c42
• https://git.kernel.org/stable/c/872607632c658d3739e4e7889e4f3c419ae2c193
• https://git.kernel.org/stable/c/8cde755f56163281ec2c46b4ae8b61f532758a6f
• https://git.kernel.org/stable/c/d88a1e8f024ba26e19350958fecbf771a9960352
• https://git.kernel.org/stable/c/fecb2fc3fc10c95724407cc45ea35af4a65cdde2
• https://lists.debian.org/debian-lts-announce/2025/10/msg00007.html
• https://lists.debian.org/debian-lts-announce/2025/10/msg00008.html

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