The new security updates are here to address a race condition (CVE-2019-11599) in Linux kernel when performing core dumps, and an integer overflow (CVE-2019-11487) when referencing counting pages. Both issues affect only Ubuntu 19.04 systems and could allow a local attacker to crash the system by causing a denial of service (DoS attack) or possibly execute arbitrary code. On Ubuntu 18.04 LTS systems, the new security patch fixes a flaw (CVE-2019-11085) discovered by Adam Zabrocki in Linux kernel’s Intel i915 kernel mode graphics driver, which failed to correctly restrict mmap() ranges under certain situations, allowing local attackers to either execute arbitrary code or cause a denial of service attack and crash the system.