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Vulnerabilities CVE-2025-38111

CVE-2025-38111

None
Open
TLP:CLEAR

net/mdiobus: Fix potential out-of-bounds read/write access

NVD CVE.org
Critical Infrastructure

AI Analysis

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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.

Details

EPSS Score
0.19%

8.7th percentile

Confidence
90%
Published
Jul 3, 2025
Last Modified
Jul 14, 2026
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