linux-raspi: Linux kernel for Raspberry Pi systems - linux-raspi-5.4: Linux kernel for Raspberry Pi systems Details: USN-4945-1 fixed vulnerabilities in the Linux kernel for Ubuntu 20.04 LTS and Ubuntu 18.04 LTS. This update provides the corresponding Linux kernel updates targeted specifically for Raspberry Pi devices in those same Ubuntu Releases. Original advisory Several security issues were fixed in the Linux kernel.