linux: Linux kernel - linux-aws: Linux kernel for Amazon Web Services systems - linux-gke: Linux kernel for Google Container Engine systems - linux-raspi2: Linux kernel for Raspberry Pi 2 - linux-snapdragon: Linux kernel for Snapdragon processors Details: USN-3378-1 fixed vulnerabilities in the Linux kernel. Unfortunately, a regression was introduced that prevented conntrack from working correctly in some situations. This update fixes the problem. We apologize for the inconvenience. Original advisory USN-3378-1 introduced a regression in the Linux kernel.