Available now for the Ubuntu 18.04 LTS (Bionic Beaver), Ubuntu 16.04 LTS (Xenial Xerus), and Ubuntu 14.04 LTS (Trusty Tahr) operating system series, the new Linux kernel security patches address a total of eleven vulnerabilities that affect the Linux 4.15, 4.4, and 3.13 kernels of the aforementioned Ubuntu releases and their derivatives. Among the fixes, we can notice a use-after-free vulnerability (CVE-2018-17182) discovered by Jann Horn in Linux kernel’s vmacache subsystem, which could allow a local attacker crash the system, as well as a stack-based buffer overflow (CVE-2018-14633) in the iSCSI target implementation, which lets a remote attacker crash the system.