CVE-2025-38111

Published Jul 3, 2025

Last updated 4 months ago

CVSS high 7.1

Overview

Description
In the Linux kernel, the following vulnerability has been resolved: net/mdiobus: Fix potential out-of-bounds read/write access When using publicly available tools like 'mdio-tools' to read/write data from/to network interface and its PHY via mdiobus, there is no verification of parameters passed to the ioctl and it accepts any mdio address. Currently there is support for 32 addresses in kernel via PHY_MAX_ADDR define, but it is possible to pass higher value than that via ioctl. While read/write operation should generally fail in this case, mdiobus provides stats array, where wrong address may allow out-of-bounds read/write. Fix that by adding address verification before read/write operation. While this excludes this access from any statistics, it improves security of read/write operation.
Source
416baaa9-dc9f-4396-8d5f-8c081fb06d67
NVD status
Analyzed
Products
linux_kernel, debian_linux

Risk scores

CVSS 3.1

Type
Primary
Base score
7.1
Impact score
5.2
Exploitability score
1.8
Vector string
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:H
Severity
HIGH

Weaknesses

nvd@nist.gov
CWE-125

Social media

Hype score
Not currently trending

  1. 🚨 URGENT: #SUSE Linux Kernel Update! 🚨 SUSE-SU-2026:0565-1 patches 4 HIGH-severity flaws in SLE 15 SP4, including CVE-2023-53321 (Wi-Fi driver) & CVE-2025-38111 (Memory corruption). R ead more: 👉 https://t.co/UWVcbvsSNE #Security https://t.co/hhknsifKwA

    @Cezar_H_Linux

    17 Feb 2026

    63 Impressions

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  2. CVE-2025-38111 In the Linux kernel, the following vulnerability has been resolved: net/mdiobus: Fix potential out-of-bounds read/write access When using publicly available tools l… https://t.co/CbxK1ivvbi

    @CVEnew

    3 Jul 2025

    290 Impressions

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Configurations

Related CVEs

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References

Sources include official advisories and independent security research.