#VU105672 Improper error handling in Linux kernel - CVE-2025-21865

Vulnerability identifier: #VU105672

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-2025-21865

CWE-ID: CWE-388

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 error handling within the gtp_net_exit_batch_rtnl() function in drivers/net/gtp.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/37e7644b961600ef0beb01d3970c3034a62913af
https://git.kernel.org/stable/c/4ccacf86491d33d2486b62d4d44864d7101b299d
https://git.kernel.org/stable/c/9d03e7e37187ae140e716377599493987fb20c5b
https://git.kernel.org/stable/c/b70fa591b066d52b141fc430ffdee35b6cc87a66
https://git.kernel.org/stable/c/ff81b14010362f6188ca26fec22ff05e4da45595

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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.