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CVE-2023-53344

kernel: Linux Kernel: Denial of Service in CAN BCM due to uninitialized memory read

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Severity

Low

Red Hat Product Security

5.5

CVSS 3.1

Review impact separately from score.

Published · September 17, 2025

Updated · June 30, 2026

Description

A flaw was found in the Linux kernel's Controller Area Network (CAN) Broadcast Manager (BCM) module. This vulnerability, an uninitialized memory read, occurs within the bcm_tx_setup function when handling message copying errors. A local attacker with low privileges could exploit this to trigger a system crash, leading to 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 · 5.5
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H

CWE-390 · Detection of Error Condition Without Action