#VU113303 Use of uninitialized resource in Linux kernel - CVE-2025-38403

Vulnerability identifier: #VU113303

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-2025-38403

CWE-ID: CWE-908

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 use of uninitialized resource within the vmci_transport_packet_init() function in net/vmw_vsock/vmci_transport.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

---

External links
https://git.kernel.org/stable/c/0a01021317375b8d1895152f544421ce49299eb1
https://git.kernel.org/stable/c/19c2cc01ff9a8031398a802676ffb0f4692dd95d
https://git.kernel.org/stable/c/1c1bcb0e78230f533b4103e8cf271d17c3f469f0
https://git.kernel.org/stable/c/223e2288f4b8c262a864e2c03964ffac91744cd5
https://git.kernel.org/stable/c/2d44723a091bc853272e1a51a488a3d22b80be5e
https://git.kernel.org/stable/c/75705b44e0b9aaa74f4c163d93d388bcba9e386a
https://git.kernel.org/stable/c/94d0c326cb3ee6b0f8bd00e209550b93fcc5c839
https://git.kernel.org/stable/c/e9a673153d578fd439919a24e99851b2f87ecbce

---

Q & A

Can this vulnerability be exploited remotely?

Is there known malware, which exploits this vulnerability?