CVE Database›CVE-2021-47384

CVE-2021-47384

kernel: hwmon: (w83793) Fix NULL pointer dereference by removing unnecessary structure field

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Severity

Moderate

Red Hat Product Security

5.5

CVSS 3.1

Review impact separately from score.

Published · May 21, 2024

Updated · October 31, 2026

Description

A vulnerability was found in the Linux kernel's hwmon driver for the w83793 module where NULL pointer dereference caused by an obsolete structure field lm75[]. During specific device read operations, if certain values are read from the device, the driver could attempt to access a NULL pointer, leading to potential system crashes or instability.

Statement

This vulnerability is rated as a moderate severity because the impact is limited to system stability rather than unauthorized access or data exposure.

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

Red Hat has investigated whether a possible mitigation exists for this issue, and has not been able to identify a practical example. Please update the affected package as soon as possible.

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-476 · NULL Pointer Dereference