CVE-2026-99066

kernel: can: dev: init_can_skb(): restore skb header initialization

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Severity

Moderate

Red Hat Product Security

5.5

CVSS 3.1

Review impact separately from score.

Published · October 23, 2026

Updated · October 29, 2026

Description

A flaw was found in the Linux kernel's CAN (Controller Area Network) subsystem. This vulnerability allows a local user to cause a Denial of Service (DoS) by triggering a kernel crash. Due to missing header initialization in received CAN network buffers, an integer calculation error can occur when processing packets through legacy packet sockets, resulting in a system panic.

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-908 · Use of Uninitialized Resource