#VU106865 Buffer overflow in Linux kernel - CVE-2025-21905

Vulnerability identifier: #VU106865

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-2025-21905

CWE-ID: CWE-119

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 memory corruption within the iwl_parse_tlv_firmware() function in drivers/net/wireless/intel/iwlwifi/iwl-drv.c. A local user can perform a denial of service (DoS) attack.

Mitigation
Install update from vendor's website.

Vulnerable software versions

Linux kernel: 6.12 - 6.12.18

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External links
https://git.kernel.org/stable/c/38f0d398b6d7640d223db69df022c4a232f24774
https://git.kernel.org/stable/c/47616b82f2d42ea2060334746fed9a2988d845c9
https://git.kernel.org/stable/c/59cdda202829d1d6a095d233386870a59aff986f
https://git.kernel.org/stable/c/88ed69f924638c7503644e1f8eed1e976f3ffa7a
https://git.kernel.org/stable/c/b02f8d5a71c8571ccf77f285737c566db73ef5e5
https://git.kernel.org/stable/c/c0e626f2b2390472afac52dfe72b29daf9ed8e1d
https://git.kernel.org/stable/c/e0dc2c1bef722cbf16ae557690861e5f91208129
https://git.kernel.org/stable/c/f265e6031d0bc4fc40c4619cb42466722b46eaa9
https://mirrors.edge.kernel.org/pub/linux/kernel/v6.x/ChangeLog-6.12.19

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Q & A

Can this vulnerability be exploited remotely?

Is there known malware, which exploits this vulnerability?