CVE Database›CVE-2022-49657

CVE-2022-49657

kernel: usbnet: fix memory leak in error case

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Severity

Moderate

Red Hat Product Security

4.7

CVSS 3.1

Review impact separately from score.

Published · February 26, 2025

Updated · October 29, 2026

Description

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

usbnet: fix memory leak in error case

usbnet_write_cmd_async() mixed up which buffers need to be freed in which error case.

v2: add Fixes tag v3: fix uninitialized buf pointer

Statement

The bug could happen on error path for some specific cases of network links over USB being used. It leads to memory leak only, so the security impact is limited.

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

To mitigate this issue, prevent module usbnet from being loaded. Please see https://access.redhat.com/solutions/41278 for how to blacklist a kernel module to prevent it from loading automatically.

CVSS / CWE

CVSS 3.1 · 4.7
CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:N/I:N/A:H

CWE-401 · Missing Release of Memory after Effective Lifetime