CVE-2026-23155

kernel: can: gs_usb: gs_usb_receive_bulk_callback(): fix error message

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Severity

Low

Red Hat Product Security

3.3

CVSS 3.1

Review impact separately from score.

Published · February 14, 2026

Updated · June 28, 2026

Description

A potential use of uninitialized variable was found in the gs_usb CAN driver. When a short read occurs before the netdev has been assigned, the error message code could dereference an undefined netdev pointer value, potentially causing a crash or information leak.

Statement

This issue affects systems using GS_USB CAN adapters. The bug occurs only on error paths when URB resubmission fails after a short read, which is an uncommon scenario. The fix initializes netdev to NULL and improves error reporting.

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 · 3.3
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:L

CWE-824 · Access of Uninitialized Pointer