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CVE Database›CVE-2025-38462

CVE-2025-38462

kernel: Linux kernel: Denial of Service in vsock due to TOCTOU race condition

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Severity

Moderate

Red Hat Product Security

4.7

CVSS 3.1

Review impact separately from score.

Published · July 25, 2025

Updated · June 30, 2026

Description

A flaw was found in the Linux kernel. A local user could exploit a Time-of-check to time-of-use (TOCTOU) race condition in the vsock implementation. This occurs when functions like vsock_find_cid() and vsock_dev_do_ioctl() race with module unload, causing a pointer to become NULL after it has been checked. Successful exploitation of this vulnerability leads to a null-pointer dereference, resulting in a system crash and a Denial of Service (DoS).

CVSS score applicability

The CVSS score(s) listed for this vulnerability do not reflect the associated product's status, and are included for informational purposes to better understand the severity of this vulnerability.

Mitigation

No mitigation is specified in collected source.

CVSS / CWE

CVSS 3.1 · 4.7
CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:N/I:N/A:H

CWE-367 · Time-of-check Time-of-use (TOCTOU) Race Condition