#VU113280 Improper locking in Linux kernel - CVE-2025-38448

Vulnerability identifier: #VU113280

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-2025-38448

CWE-ID: CWE-667

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 improper locking within the __acquires() and gs_start_io() functions in drivers/usb/gadget/function/u_serial.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/18d58a467ccf011078352d91b4d6a0108c7318e8
https://git.kernel.org/stable/c/a5012673d49788f16bb4e375b002d7743eb642d9
https://git.kernel.org/stable/c/abf3620cba68e0e51e5c21054ce4f925f75b3661
https://git.kernel.org/stable/c/c529c3730bd09115684644e26bf01ecbd7e2c2c9
https://git.kernel.org/stable/c/c6eb4a05af3d0ba3bc4e8159287722fb9abc6359
https://git.kernel.org/stable/c/c8c80a3a35c2e3488409de2d5376ef7e662a2bf5
https://git.kernel.org/stable/c/d43657b59f36e88289a6066f15bc9a80df5014eb
https://git.kernel.org/stable/c/ee8d688e2ba558f3bb8ac225113740be5f335417

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Q & A

Can this vulnerability be exploited remotely?

Is there known malware, which exploits this vulnerability?