CVE-2021-47223

A flaw was found in the Linux kernel's bridge networking subsystem. When a Virtual Local Area Network (VLAN) tunnel is removed while outgoing network traffic is actively being processed, improper synchronization causes the kernel to access invalid memory. A local attacker could exploit this vulnerability to trigger a null pointer dereference, crashing the operating system and causing a Denial of Service (DoS).

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.