#VU105033 Input validation error in Linux kernel - CVE-2025-21750

Vulnerability identifier: #VU105033

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-2025-21750

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 brcmf_of_probe() function in drivers/net/wireless/broadcom/brcm80211/brcmfmac/of.c. A local user can perform a denial of service (DoS) attack.

Mitigation
Install update from vendor's website.

Vulnerable software versions

Linux kernel: All versions

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External links
https://git.kernel.org/stable/c/082d9e263af8de68f0c34f67b251818205160f6e
https://git.kernel.org/stable/c/7ef2ea1429684d5cef207519bdf6ce45e50e8ac5
https://git.kernel.org/stable/c/af525a8b2ab85291617e79a5bb18bcdcb529e80c
https://git.kernel.org/stable/c/bb8e35e33e79eb8e44396adbc8cb6c8c5f16b731
https://git.kernel.org/stable/c/c9480e9f2d10135476101619bcbd1c49c15d595f

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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.