#VU107809 Input validation error in Linux kernel - CVE-2025-22043

Vulnerability identifier: #VU107809

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-2025-22043

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 parse_durable_handle_context() function in fs/smb/server/smb2pdu.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, 6.14.1

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External links
https://git.kernel.org/stable/c/1107b9ed92194603593c51829a3887812ae9e806
https://git.kernel.org/stable/c/29b946714d6aa77de54c71243bba39469ac43ef2
https://git.kernel.org/stable/c/542027e123fc0bfd61dd59e21ae0ee4ef2101b29
https://git.kernel.org/stable/c/8d4848c45943c9cf5e86142fd7347efa97f497db
https://git.kernel.org/stable/c/f0db3d9d416e332a0d6f045a1509539d3a4cd898
https://mirrors.edge.kernel.org/pub/linux/kernel/v6.x/ChangeLog-6.14.2

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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.