#VU112297 NULL pointer dereference in Linux kernel - CVE-2025-38203

Vulnerability identifier: #VU112297

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-2025-38203

CWE-ID: CWE-476

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 NULL pointer dereference within the jfs_ioc_trim() function in fs/jfs/jfs_discard.c. A local user can perform a denial of service (DoS) attack.

Mitigation
Install update from vendor's repository.

Vulnerable software versions

Linux kernel: All versions

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External links
https://git.kernel.org/stable/c/0d50231d473f89024158dc62624930de45d13718
https://git.kernel.org/stable/c/4a8cb9908b51500a76f5156423bd295df53bff89
https://git.kernel.org/stable/c/9806ae34d7d661c372247cd36f83bfa0523d60ed
https://git.kernel.org/stable/c/a4685408ff6c3e2af366ad9a7274f45ff3f394ee
https://git.kernel.org/stable/c/a9d41c925069c950e18160e12a7e10e0f58c56fb

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Q & A

Can this vulnerability be exploited remotely?

Is there known malware, which exploits this vulnerability?