CVE-2026-63898

Updated on 19 Jul 2026

Severity

Awaiting Analysis

Details

Overview

About vulnerability

In the Linux kernel, the following vulnerability has been resolved:

USB: serial: mct_u232: fix memory corruption with small endpoint

The driver overrides the maximum transfer size for a specific device which only accepts 16 byte packets for its 32 byte bulk-out endpoint.

Make sure to never increase the maximum transfer size to prevent slab corruption should a malicious device report a smaller endpoint max packet size than expected.

Details

Affected packages:
kernel @ 5.14.0 (+6 more)

KernelCare state

Live-patch status from KernelCare for each operating system.

Operating system Status Covered kernels
Debian 12 Planned