The following Linux kernel updates has been released for Ubuntu Linux:
USN-3617-3: Linux kernel (Raspberry Pi 2) vulnerabilitiesLinux Kernel Updates for Ubuntu
USN-3618-1: LibVNCServer vulnerability
USN-3619-1: Linux kernel vulnerabilities
USN-3620-1: Linux kernel vulnerabilities
USN-3620-2: Linux kernel (Trusty HWE) vulnerabilities