CVE-2021-47386

A vulnerability was found in the Linux kernel's hwmon driver in the w83791d module where the driver performs a read operation, which can result in a NULL pointer dereference. This occurs due to an unnecessary field (lm75[]) that is no longer needed after updates to device handling functions, the driver could attempt to access a NULL pointer, leading to potential system crashes.

This vulnerability is rated as a moderate severity because the risk is linked to system crashes or unexpected behavior, which can disrupt normal operations but does not directly compromise sensitive data or allow unauthorized access.

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.

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.