linux: Linux kernel - linux-aws: Linux kernel for Amazon Web Services systems - linux-azure: Linux kernel for Microsoft Azure Cloud systems - linux-azure-fde: Linux kernel for Microsoft Azure CVM cloud systems - linux-ibm: Linux kernel for IBM cloud systems - linux-kvm: Linux kernel for cloud environments - linux-lowlatency: Linux low latency kernel - linux-oracle: Linux kernel for Oracle Cloud systems - linux-aws-5.15: Linux kernel for Amazon Web Services systems - linux-azure-5.15: Linux kernel for Microsoft Azure cloud systems - linux-azure-fde-5.15: Linux kernel for Microsoft Azure CVM cloud systems - linux-hwe-5.15: Linux hardware enablement kernel - linux-lowlatency-hwe-5.15: Linux low latency kernel Several security issues were fixed in the Linux kernel.