CVE-2021-47318

A vulnerability was found in the topology_scale_freq_tick() function in the Linux kernel's architecture topology management. This function may use a pointer to struct scale_freq_data that has already been cleared, leading to a use-after-free condition. This can happen because there is no mechanism to ensure the cleared data is not accessed again.

This vulnerability is rated as a moderate severity because it does not lead to unauthorized access but can cause system instability and the potential for a use-after-free error that may disrupt normal operations.

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.