#VU112212 NULL pointer dereference in Linux kernel - CVE-2025-38135

Vulnerability identifier: #VU112212

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-2025-38135

CWE-ID: CWE-476

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 NULL pointer dereference within the mlb_usio_probe() function in drivers/tty/serial/milbeaut_usio.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/19fd9f5a69363d33079097d866eb6082d61bf31d
https://git.kernel.org/stable/c/548b0e81b9a0902a8bc8259430ed965663baadfc
https://git.kernel.org/stable/c/81159a6b064142b993f2f39828b77e199c77872a
https://git.kernel.org/stable/c/86bcae88c9209e334b2f8c252f4cc66beb261886
https://git.kernel.org/stable/c/a05ebe384c7ca75476453f3070c67d9cf1d1a89f
https://git.kernel.org/stable/c/a6c7c365734cd0fa1c5aa225a6294fdf80cad2ea
https://git.kernel.org/stable/c/c23d87b43f7dba5eb12820f6cf21a1cd4f63eb3d
https://git.kernel.org/stable/c/e1b144aebe6fb898d96ced8c990d7aa38fda4a7a

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Q & A

Can this vulnerability be exploited remotely?

Is there known malware, which exploits this vulnerability?