CVE-2026-43103

kernel: net: lapbether: handle NETDEV_PRE_TYPE_CHANGE

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Severity

Unknown

Red Hat Product Security

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CVSS

Review impact separately from score.

Published · May 6, 2026

Updated · June 28, 2026

Description

A flaw was found in the Linux kernel's lapbether network driver. This vulnerability occurs because the lapbeth_data_transmit() function expects a specific underlying device type, and without proper handling of network device type changes, this expectation can be violated. This could lead to unexpected behavior or system instability, potentially resulting in a denial of service.

Mitigation

No mitigation is specified in collected source.

CVSS / CWE

CWE-1287 · Improper Validation of Specified Type of Input