The update is a major one patching a total of 13 security flaws, including race conditions in Linux kernel’s ALSA subsystem, the packet fanout implementation, and the key management subsystem, as well as use-after-free vulnerabilities in both the USB serial console driver and the ALSA subsystem. Various other issues were also patched for Linux kernel’s key management subsystem, the Ultra Wide Band driver, the ALSA subsystem, the USB unattached storage driver, and the USB subsystem, which received the most attention in this update as several security flaws were recently disclosed.