Linux kernel is vulnerable to denial of service (DoS). There is a use-after-free bug that can be caused by a malicious USB device in the drivers/usb/misc/yurex.c driver.
lists.opensuse.org/opensuse-security-announce/2019-12/msg00029.html
www.openwall.com/lists/oss-security/2019/12/03/4
cdn.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.2.9
git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=fc05481b2fcabaaeccf63e32ac1baab54e5b6963
lists.debian.org/debian-lts-announce/2020/01/msg00013.html
lists.debian.org/debian-lts-announce/2020/03/msg00001.html