This indicates an attack attempt against a Denial-Of-Service vulnerability in Oracle VirtualBox.
The vulnerability is due to a error in the application when handling a crafted TCP session sent from a virtual machine. A remote attacker may be able to exploit this to cause a denial of service condition on the affected system.
Oracle VirtualBox prior to 5.2.26, prior to 6.0.4
Denial of Service: Remote attackers can crash vulnerable systems.
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