Input validation error in Linux kernel usb typec driver

1) Input validation error

EUVDB-ID: #VU109585

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-2025-37986

CWE-ID: CWE-20 - Improper input validation

Exploit availability: No

Description

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

The vulnerability exists due to improper input validation within the typec_unregister_partner() function in drivers/usb/typec/class.c. A local user can perform a denial of service (DoS) attack.

Mitigation

Install update from vendor's website.

Vulnerable software versions

Linux kernel: 6.14 - 6.14.4

CPE2.3

• cpe:2.3:o:linux_foundation:linux_kernel:6.14:*:*:*:*:*:*:*
• cpe:2.3:o:linux_foundation:linux_kernel:6.14.1:*:*:*:*:*:*:*
• cpe:2.3:o:linux_foundation:linux_kernel:6.14.2:*:*:*:*:*:*:*
• cpe:2.3:o:linux_foundation:linux_kernel:6.14.3:*:*:*:*:*:*:*
• cpe:2.3:o:linux_foundation:linux_kernel:6.14.4:*:*:*:*:*:*:*

External links

https://git.kernel.org/stable/c/40966fc9939e85677fdb489dfddfa205baaad03b
https://git.kernel.org/stable/c/66e1a887273c6b89f09bc11a40d0a71d5a081a8e
https://git.kernel.org/stable/c/74911338f47c13d1b9470fc50718182bffad42e2
https://mirrors.edge.kernel.org/pub/linux/kernel/v6.x/ChangeLog-6.14.5

Q & A

Can this vulnerability be exploited remotely?

No. This vulnerability can be exploited locally. The attacker should have authentication credentials and successfully authenticate on the system.

Is there known malware, which exploits this vulnerability?

No. We are not aware of malware exploiting this vulnerability.