#VU112761 NULL pointer dereference in Linux kernel - CVE-2025-38337

Vulnerability identifier: #VU112761

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-2025-38337

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 jbd2_journal_dirty_metadata() function in fs/jbd2/transaction.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/23361b479f2700c00960d3ae9cdc8ededa762d47
https://git.kernel.org/stable/c/2e7c64d7a92c031d016f11c8e8cb05131ab7b75a
https://git.kernel.org/stable/c/43d5e3bb5f1dcd91e30238ea0b59a5f77063f84e
https://git.kernel.org/stable/c/5c1a34ff5b0bfdfd2f9343aa9b08d25df618bac5
https://git.kernel.org/stable/c/a377996d714afb8d4d5f4906336f78510039da29
https://git.kernel.org/stable/c/af98b0157adf6504fade79b3e6cb260c4ff68e37
https://git.kernel.org/stable/c/ec669e5bf409f16e464bfad75f0ba039a45de29a
https://git.kernel.org/stable/c/f78b38af3540b4875147b7b884ee11a27b3dbf4c

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Q & A

Can this vulnerability be exploited remotely?

Is there known malware, which exploits this vulnerability?