CVE-2025-38200: debian linux Integer Underflow — Fix

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.

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CVSS v3.1 Score

5.5

MEDIUM

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

Weakness Type (CWE)

CWE-191 CWE-191

Affected Products

Vendor	Product	Versions
linux	linux_kernel	3.12 — 5.4.295
linux	linux_kernel	5.5 — 5.10.239
linux	linux_kernel	5.11 — 5.15.186
linux	linux_kernel	5.16 — 6.1.142
linux	linux_kernel	6.2 — 6.6.95
linux	linux_kernel	6.7 — 6.12.35
linux	linux_kernel	6.13 — 6.15.4
debian	debian_linux	All

References

Advisories & Patches

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

Other References

https://lists.debian.org/debian-lts-announce/2025/10/msg00007.html https://lists.debian.org/debian-lts-announce/2025/10/msg00008.html

Frequently Asked Questions

What is 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 write access to an invalid page. Prevent the integer underflow by changing the type of related variables. It has a CVSS v3.1 base score of 5.5 (MEDIUM).

How severe is CVE-2025-38200? +

CVE-2025-38200 has a CVSS v3.1 score of 5.5 out of 10, rated MEDIUM. This is a medium-severity vulnerability that should be remediated as part of regular maintenance.

What products are affected by CVE-2025-38200? +

CVE-2025-38200 affects products from debian, linux, specifically: debian_linux, linux_kernel. Check the affected products table above for specific version ranges.

How do I check if I'm vulnerable to CVE-2025-38200? +

You can use Secably's free Website Scanner to check your website for known vulnerabilities. For infrastructure scanning, use the Port Scanner to identify exposed services that may be affected. Check the vendor advisories linked above for specific patch and version information.

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