CVE-2025-68308

kernel: Linux kernel: Denial of Service in kvaser_usb CAN driver due to infinite loop

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Severity

Low

Red Hat Product Security

5.5

CVSS 3.1

Review impact separately from score.

Published · December 16, 2025

Updated · June 30, 2026

Description

A flaw was found in the Linux kernel, specifically within the kvaser_usb CAN driver. This vulnerability allows a local user to trigger an infinite loop in the command parsing logic. This occurs when zero-length commands, used for data alignment, are encountered precisely on a packet boundary, causing the buffer position to not advance. The primary consequence of this flaw is a Denial of Service (DoS) to the 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 · 5.5
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H

CWE-835 · Loop with Unreachable Exit Condition ('Infinite Loop')