#VU106867 Input validation error in Linux kernel - CVE-2025-21992

Vulnerability identifier: #VU106867

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-2025-21992

CWE-ID: CWE-20

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 input validation within the HID_USB_DEVICE() function in drivers/hid/hid-quirks.c. A local user can perform a denial of service (DoS) attack.

Mitigation
Install update from vendor's website.

Vulnerable software versions

Linux kernel: 6.1 - 6.1.131

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External links
https://git.kernel.org/stable/c/363236d709e75610b628c2a4337ccbe42e454b6d
https://git.kernel.org/stable/c/6ca3d4d87af406a390a34ea924ab65c517e6e132
https://git.kernel.org/stable/c/7a7ada33879a631b05b536e66d1c5b1219d3bade
https://git.kernel.org/stable/c/920ea73215dbf948b661b88a79cb47b7f96adfbd
https://git.kernel.org/stable/c/9acdb0059fb6b82158e15adae91e629cb5974564
https://mirrors.edge.kernel.org/pub/linux/kernel/v6.x/ChangeLog-6.1.132

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Q & A

Can this vulnerability be exploited remotely?

Is there known malware, which exploits this vulnerability?