Multiple security vulnerabilities were discovered in the Linux kernel for Raspberry Pi systems, affecting subsystems such as Ext4 file system, NFS server daemon, packet sockets, network traffic control, and VMware vSockets driver. These issues could potentially allow an attacker to compromise the system. A patch fixing these vulnerabilities is available in version 5.4.0-1134.147~18.04.1. Users are advised to update and reboot their systems. Due to an ABI change, third-party kernel modules may need recompilation and reinstallation.