CVE-2019-19227

Name of the Vulnerable Software and Affected Versions Linux kernel versions prior to 5.1

Description The issue is related to a potential NULL pointer dereference in the AppleTalk subsystem of the Linux kernel. This can lead to a denial of service, specifically in the net/appletalk/aarp.c and net/appletalk/ddp.c components. The problem arises because the register snap client function may return NULL, which can cause issues when unregister snap client is called.

Recommendations For Linux kernel versions prior to 5.1, update to version 5.1 or later to resolve the issue. As a temporary workaround, consider restricting access to the AppleTalk subsystem to minimize the risk of exploitation.