linux: Linux kernel - linux-aws: Linux kernel for Amazon Web Services systems - linux-azure: Linux kernel for Microsoft Azure Cloud systems - linux-gcp: Linux kernel for Google Cloud Platform systems - linux-kvm: Linux kernel for cloud environments - linux-oem: Linux kernel for OEM processors Details: USN-3695-1 fixed vulnerabilities in the Linux kernel for Ubuntu 18.04 LTS. Unfortunately, the fix for CVE-2018-1108 introduced a regression where insufficient early entropy prevented services from starting, leading in some situations to a failure to boot, This update addresses the issue. We apologize for the inconvenience. Original advisory A regression that caused boot failures was fixed in the Linux kernel.