#VU112195 Out-of-bounds read in Linux kernel - CVE-2025-38111

Vulnerability identifier: #VU112195

Vulnerability risk: Low

CVSSv4.0: 4.3 [CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/E:U/U:Clear]

CVE-ID: CVE-2025-38111

CWE-ID: CWE-125

Exploitation vector: Local

Exploit availability: No

Vulnerable software:
Linux kernel
Operating systems & Components / Operating system

Vendor: Linux Foundation

Description

The vulnerability allows a local user to perform a denial of service (DoS) attack.

The vulnerability exists due to an out-of-bounds read error within the __mdiobus_read() and __mdiobus_write() functions in drivers/net/phy/mdio_bus.c. A local user can perform a denial of service (DoS) attack.

Mitigation
Install update from vendor's repository.

Vulnerable software versions

Linux kernel: All versions

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External links
https://git.kernel.org/stable/c/014ad9210373d2104f6ef10e6bb999a7a0a4c50e
https://git.kernel.org/stable/c/049af7ac45a6b407748ee0995278fd861e36df8f
https://git.kernel.org/stable/c/0e629694126ca388916f059453a1c36adde219c4
https://git.kernel.org/stable/c/19c5875e26c4ed5686d82a7d8f7051385461b9eb
https://git.kernel.org/stable/c/73d478234a619f3476028cb02dee699c30ae8262
https://git.kernel.org/stable/c/b02d9d2732483e670bc34cb233d28e1d43b15da4
https://git.kernel.org/stable/c/bab6bca0834cbb5be2a7cfe59ec6ad016ec72608

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Q & A

Can this vulnerability be exploited remotely?

Is there known malware, which exploits this vulnerability?