CVE-2025-68246

kernel: ksmbd: Remote Denial of Service via socket leak

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Severity

Important

Red Hat Product Security

5.9

CVSS 3.1

Review impact separately from score.

Published · December 16, 2025

Updated · August 14, 2026

Description

A flaw was found in ksmbd (kernel SMB daemon) in the Linux kernel. A remote attacker can exploit this vulnerability by exceeding the per-IP connection limit. This leads to a socket leak for each rejected connection attempt, which can result in a denial of service (DoS) due to resource exhaustion.

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 · 5.9
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H

CWE-772 · Missing Release of Resource after Effective Lifetime