Multiple security vulnerabilities were discovered in the Linux kernel for Raspberry Pi Real-time systems, including a critical flaw (CVE-2024-36347) affecting AMD Zen processors where CPU microcode signature verification is improper. This flaw, known as EntrySign, allows a privileged attacker to load malicious CPU microcode, potentially causing loss of system integrity and confidentiality. Numerous other kernel subsystems and drivers were also affected by various security issues. A patch is available to address these vulnerabilities.