CVE-2021-47555

A vulnerability was found in the Linux kernel's VLAN implementation in the handling of reference counts for the underlying device, where the issue occurs when the reference count for the real_dev is decremented without a corresponding increment, leading to an underflow condition when a VLAN device is removed, resulting in memory leaks and DoS during device unregistration.

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 for this issue is either not available or the currently available options do not meet the Red Hat Product Security criteria comprising ease of use and deployment, applicability to widespread installation base or stability.