CVE Database›Document archive›CVE-2025-68263

CVE-2025-68263

kernel: Linux kernel ksmbd: Use-after-free vulnerability allows arbitrary code execution

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Severity

Important

Red Hat Product Security

8.1

CVSS 3.1

Review impact separately from score.

Published · December 16, 2025

Updated · August 14, 2026

Description

A flaw was found in ksmbd, a component of the Linux kernel. A race condition exists in the Inter-Process Communication (IPC) message handling within the ipc_msg_send_request() function. This allows a remote, unauthenticated attacker to trigger a use-after-free vulnerability by sending specially crafted IPC messages. Successful exploitation could lead to memory corruption, potentially enabling arbitrary code execution or a denial of service on the affected system.

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 · 8.1
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H

CWE-825 · Expired Pointer Dereference